Journal articles: 'Tank experiment'

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Sheng, Dong-Yuan, and Zongshu Zou. "Application of Tanks-in-Series Model to Characterize Non-Ideal Flow Regimes in Continuous Casting Tundish." Metals 11, no. 2 (2021): 208. http://dx.doi.org/10.3390/met11020208.

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This study describes a new tanks-in-series model for analyzing non-ideal flow regimes in a single-strand tundish. The tundish was divided into two interconnected tanks, namely an inlet tank and an outlet tank. A water model experiment was carried out to separately measure the residence-time distribution (RTD) of the two tanks. Drift beads were adopted in the water model experiment to simulate the non-metallic inclusions in molten steel. Dead volume fraction was evaluated by analyzing measured RTD curves. The ratio between mixed flow volume and plug flow volume was proposed as a new criterion to evaluate the inclusion removal. In the inlet tank, a higher mixed flow fraction was preferred to effectively release turbulent kinetic energy and enhance inclusion collision growth. In the outlet tank, a higher plug flow fraction was preferred to facilitate inclusion removal by flotation. The optimal positions of the weir were recommended based on the RTD analysis and the inclusion removal from the results of water model experiments. A theoretical equation was derived based on the tanks-in-series model, providing a good fitting function to analyze the experimental data. The confirmation test was performed by applying computational fluid dynamics simulations of liquid steel flow in the real tundish.

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Liu, De Yu, and Zhou Fang. "Dynamic Experimental Investigation on the Fundamental Frequency of Liquid Storage Tanks under Seismic Excitations." Applied Mechanics and Materials 477-478 (December 2013): 81–85. http://dx.doi.org/10.4028/www.scientific.net/amm.477-478.81.

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A large-scale earthquake simulation experiment about the unanchored cylindrical steel liquid storage model tanks has been completed. The fundamental frequency of the model tank with liquid inside was investigated based on the experimental data of the acceleration dynamic response. The seismic table test, the analysis methods are designed and conducted, and experimental results of the model tank were carefully measured. Furthermore, national design standard was used to calculate the fundamental frequency of the model tank system. The reasons for the existence of consistency and differences between the results obtained from experiments and national design standard were discussed.

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Joos, F. M., and P. W. Huber. "Coupled Gas-Liquid-Structure Systems: Part 2—Applications." Journal of Applied Mechanics 54, no. 4 (1987): 942–50. http://dx.doi.org/10.1115/1.3173143.

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In the companion paper, Joos and Huber (1987) have developed an analysis that applies to certain types of systems in which a hydrodynamic transient creates pressure forces dependent on the flexibilities of the liquid boundary surfaces. To test the analysis we performed two pairs of experiments. Each pair involved identical experiments conducted in two geometrically identical cylindrical tanks. One tank was rigid, the other flexible. In the first set of experiments a gas bubble oscillated freely in a container partially filled with liquid. We compared experimentally measured natural frequencies with those predicted theoretically. In the second set of experiments a complex hydrodynamic transient was produced by injecting air into a tank partially filled with liquid. Using data from the rigid system experiments we predict the pressures and wall displacements in the flexible system and compare these predictions with measurements made in the flexible test tank. The inverse problem—predicting the pressures in the rigid tank from data obtained in the flexible tank—is also analyzed using the theoretical tools we have developed, and again predictions are compared with experiment.

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Kim, SooHyeon, Sungchul Hong, Pyongin Yi, et al. "Experiment and Analysis of Cryogenic Tank Rotation Tank Using SPH." Journal of the Korean Society of Urban Environment 21, no. 1 (2021): 31–39. http://dx.doi.org/10.33768/ksue.2021.21.1.031.

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Sakakiyama, Tsutomu, Shinichi Matsuura, and Masafumi Matsuyama. "Tsunami Force Acting on Oil Tanks and Buckling Analysis for Tsunami Pressure." Journal of Disaster Research 4, no. 6 (2009): 427–34. http://dx.doi.org/10.20965/jdr.2009.p0427.

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Experiments on the tsunami force and pressure acting on oil tanks. The tsunami concerned in the present paper is that is expected to be generated by future Tokai and Tonankai earthquakes. The maximum water level of about 5 m is estimated at a certain power plant site. Two types of experiment were carried out: Measurements of the tsunami force acting on a single tank as a fundamental test and these on tanks in a tank complex as a practical problem. The effect of the free surface on the drag coefficient was discussed. If the tanks of which diameter ranges from 5.8 m to 48.6 m and weight ranges from 5.8 t to 540 t are empty, they can be floated due to in case of 2-m-high flooding. The tsunami pressure acting on tanks surrounded by oil protection walls is not uniform and the buckling of the side wall is very sensitive to the distribution of pressure around the tank. The lowest level of oil in the tank should be kept higher than the estimated inundation depth to prevent the tanks from floating and buckling.

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Lightstone, M. F., G. D. Raithby, and K. G. T. Hollands. "Numerical Simulation of the Charging of Liquid Storage Tanks: Comparison With Experiment." Journal of Solar Energy Engineering 111, no. 3 (1989): 225–31. http://dx.doi.org/10.1115/1.3268311.

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The degree of thermal stratification maintained in hot water storage tanks has a significant impact on the performance of a solar energy system. This paper presents an axisymmetric finite volume model analysis of the charging of a tank with hot water, and compares the predictions with experimental results from the literature. The results show the capabilities and deficiencies of such a modeling technique for this type of problem. The importance of inlet fluid turbulence to tank destratification is demonstrated and inclusion of a simple turbulence model is found sufficient to yield good agreement with measurement. The model predictions also provide insight into when a simple one-dimensional plug flow model will be adequate. In addition, the model is used to evaluate the effect during charging of heat conduction in the tank wall on the temperature field in the fluid. Recommendations are made regarding future work on the development of detailed numerical codes for simulating the charging of liquid storage tanks.

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Nafiqoh, Nunak, Poh-Shing Chang, and Yu-Chi Wang. "THE EFFECT OF FEEDING Lactobacillus ON GROWTH, SURVIVAL RATE AND PROTEASE ACTIVITY OF Litopenaeus vannamei." Indonesian Aquaculture Journal 6, no. 2 (2011): 141. http://dx.doi.org/10.15578/iaj.6.2.2011.141-147.

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This study examined the effect of two Lactobacillus bacteria on protease activity and growth rate of Litopenaeus vannamei. An experiment was conducted to examine protease activity and growth rate. The experiment consisted of two treatment tanks, the first tank was provided with artemia immersed in 2.6 x 1016 cfu/mL of bacteria solution, the second tank served as the control tank. After 20 days, the L. vannamei in the tank that received Lactobacillus have significantly different in growth, survival rate and protease activity (P<0.05) compared to the control, but no significant difference between Lactobacillus casei and Lactobacillus plantarum treatments. Within the digestive organ, protease activity of hepatopancreas and stomach demonstrated significant higher activity (P<0.05) compared to the intestine.

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Roy, Dulon, Zavyalov Aleksandar Petrobich, Blacob Balentin Aleksebich, and Gulshan Ara Latifa. "Intensive polyculture of common carp (Cyprinus carpio), mirror carp (Cyprinus carpio carpio), silver carp (Hypophthalmichthys Molitrix) and grass carp (Ctenopharyngodon Idella) at different stocking densities." Bangladesh Journal of Zoology 46, no. 1 (2018): 71–80. http://dx.doi.org/10.3329/bjz.v46i1.37628.

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An experiment was carried out for 6 months on rearing of common carp, mirror carp, grass carp and silver carp under polyculture system at different stocking densities in cemented tanks (5 - 7 m in diameter and water depth 1.0 - 1.5 m). Observations were made on fish growth in terms of monthly and per day weight gain. Grass carp attained the maximum weight 686 ± 17, 720 ± 16.5 and 765 ± 9.6 in three tanks, respectively. Weight gained followed by silver carp as 680 ± 10 g, 680 ± 12.6 g and 701 ± 9.2 g in tank 1, tank 2 and tank 3, respectively. The common carp gained its average maximum weight 525 ± 10.7 g in tank3 and the mirror carp also attained its maximum weight 500 ± 12.2 g in same tank. In common carp the maximum average daily weight gain (3.2 ± 0.1 g) was in the month of December and lowest was (1.92 ± 0.2 g) in the month of August in tank 3. In mirror carp the maximum average daily weight gain (3.03 ± 0.09 g) was in the month of September and lowest (1.41 ± 0.07g) in the month of July in tank 3 and tank 2, respectively. In grass carp the maximum average daily weight gain (4.24 ± 0.17 g) was in the month of August and lowest (2.72 ± 0.07 g) in the month of July in tank 3 and tank 1, respectively. Among silver carp the maximum average daily weight gain (4.45 ± 0.01 g) recorded in the month of October and lowest was (2.61 ± 0.11 g) in the month of July in tank 1. The specific growth rate (SGR) was 1.23 ± 0.64 to 1.33 ± 0.83 in common carp, 1.27 ± 0.9 to 1.34 ± 0.8 in mirror carp, 1.36 ± 0.86 to 1.55 ± 1.13 in grass carp and 1.41 ± 0.83 to 1.52 ± 1.09 in silver carp in different culture treatments.Bangladesh J. Zool. 46(1): 71-80, 2018

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Iwawaki, Tatsuyuki, Daisuke Sasaki, Toshiro Noritsugu, and Masahiro Takaiwa. "Development of Portable Energy-Saving Type Air Supply System – 1st Report: Effect of Variable Volume Tank –." Journal of Robotics and Mechatronics 24, no. 3 (2012): 464–71. http://dx.doi.org/10.20965/jrm.2012.p0464.

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The purpose of this study is to develop a portable energy-saving type air supply system. A variable volume tank is developed in order to drive a pneumatic actuator with a low discharge pressure in a tank. The developed tank composed of flexible materials can store pneumatic energy by converting it to elastic energy. In this paper, the composition of the system, the structure and characteristic of a variable volume tank and experiment of driving actuator with constant and variable volume tanks are discussed. As a result, the variable volume tank can drive the actuator at a lower supply pressure than with the constant volume tank.

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Chen, Geng, Jia Qu, and Chun Yu Tian. "Numerical Analysis of Ring Beam Effect on the Modal of LNG Storage Tank." Applied Mechanics and Materials 638-640 (September 2014): 172–77. http://dx.doi.org/10.4028/www.scientific.net/amm.638-640.172.

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LNG storage tank is an important department in the gas receiving station. LNG in the tank is flammable and explosive medium, once the tank damaged, disasters may be happened. So researching the dynamic response analysis is very necessary. In this paper, modal analysis of LNG outside tank were performed by ANSYS Workbench, the first six orders of mode shapes and their frequencies of LNG outside tank were concluded. Contrast vibration mode and natural frequency of the LNG storage tanks with ring beam and no ring beam, the influence of ring beam of LNG tank mode has been discussed. Conduct a series experiment by change the parameters of the ring beam, Parameters for ring beam effect on the inherent frequency and vibration mode of LNG outside tank has been researched. This research has provided the provided the reliable basis for the safety using of tanks and has built the base of the further dynamic response analysis.

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Lazarte, Alejandro I., William Fullmer, and Martín Bertodano. "Experimental Validation of RELAP5 and TRACE5 for Licensing Studies of the Boron Injection System of Atucha II." Science and Technology of Nuclear Installations 2011 (2011): 1–12. http://dx.doi.org/10.1155/2011/693245.

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This paper presents an experimental validation of RELAP5 and TRACE5 for licensing studies of the Atucha II-PHWR nuclear power plant. A scaled experimental facility, representing the boron injection system of Atucha II, was built. The system has a fundamental importance for loss of coolant accidents (LOCA) and anticipated transients without scram (ATWS). The experiment consists of the discharge of a tank that represents the boron tank filled with air or a mixture of air-water onto a discharge tank that represents the moderator tank. Both tanks are connected by a pipe which includes a valve and an orifice plate to model the pressure losses due to the fittings in the real system. The pressure and water level measured in the tanks are compared with the RELAP5 and TRACE5 predictions. The codes predict the pressure in the tanks accurately. However, both codes overpredict the heat transfer in the boron tank air-water interface which produces a greater expansion of the air which leads to a small discrepancy in the boron tank level prediction.

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Zhang, Jian Hua, Ling Yu Sun, Xiao Jun Zhang, and Jia Peng Li. "Study on the Deformation of the Oil-Immersed Transformer Tank by FEA." Advanced Materials Research 422 (December 2011): 51–54. http://dx.doi.org/10.4028/www.scientific.net/amr.422.51.

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The oil-immersed transformer tank is an outside package component of the transformer body. The sealing quality and mechanical strength of the oil tank are affected by the deformation after loading. In this paper, the 3D finite element model of oil-immersed transformer tank is established. The oil-immersed transformer tank deformation is obtained by FEA under the condition of vacuuming. A series of experiments about the deformation of the oil-immersed transformer tank are carried out. Comparing experiment results with FEA results, FEA results are agrees well with the experiments’. It can save the time consumed on designing the oil tank, and has the directive function for the whole design.

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Lugli, Marco. "Response of Male Goby, Padogobius Martensii, To Aggressive Sound Playback Following Pre-Experimental Visual Stimulation." Behaviour 134, no. 15-16 (1997): 1175–88. http://dx.doi.org/10.1163/156853997x00115.

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AbstractThree playback experiments with a freshwater goby, Padogobius martensii, examined the effects of recent aggressive experience on the response of the territorial fish to the aggressive sound alone. Experiments 1 and 2 were conducted on a first group of fifteen resident males (i.e. males individually housed within laboratory tanks for at least 5 days). Experiment 1 simply consisted of playing back the sound to the resident male not exposed to social stimulation for at least 48 h. In experiment 2 the same male was exposed to its mirror image before the start of playback. Results showed that in experiment 1 males ignored or even tended to avoid the site of sound stimulation, whereas in experiment 2 they attended the sound site more frequently during the sound playback. In both experiments the mirror and the loudspeaker were placed on the same side of the tank. The third playback experiment was therefore developed to include mirror and loudspeaker on opposite sides of the tank. A different group of sixteen males was used for these experiments. Results showed that the sound playback may be more important than the mirror site in directing the approach response of the male. Furthermore, the magnitude of sound interference was positively correlated with the level of mirror aggressiveness shown by the male before playback. Functional implications of the responses to the aggressive sound alone for the territorial fish are discussed.

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Da Silva, Karina Gonçalves, Emerson Alves Da Silva, Mauricio Lamano Ferreira, Shoey Kanashiro, Plínio Barbosa De Camargo, and Armando Reis Tavares. "Gas exchange and chlorophyll a fluorescence parameters of ornamental bromeliads." Ornamental Horticulture 23, no. 4 (2017): 400–406. http://dx.doi.org/10.14295/oh.v23i4.1064.

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Gas exchange and chlorophyll a fluorescence are widely used in physiological and ecological studies; however, few studies have used these techniques with ornamental plants. This study tested the potential contribution of gas exchange and chlorophyll a fluorescence to evaluate the water and nutrients uptake by the tank and root system of epiphyte bromeliad Guzmania lingulata. For this purpose, we conducted an experiment with different water regime and another with different concentrations of nitrogen. The experiments were: 1 - Watering: Control (application of water into Tank and Root), Tank (watering into Tank), Root (watering Root) and Drought (water suspension during the 90 days of experimentation) and 2 - Nitrogen: Plants fertilized with Hoagland and Arnon nutrient solution exclusively into Tank or Root with nitrogen concentrations of control and 2.62 or 5.34 mM N applied as urea. The Fv /Fm ratio allowed comparing the treatments between experiments, demonstrating that Root and Tank both have the capacity to maintain G. lingulata photosynthetic activity and growth, while Drought treatment (water suspension) was the limiting factor for energy conversion efficiency of PSII. However, gas exchange was more permissive as a parameter for comparing treatments in the nitrogen experiment, providing important information about the general aspects of the photosynthetic process in the watering experiment. Both gas exchange and chlorophyll a fluorescence can support the evaluation of G. lingulata physiological status and can be useful tools in ornamental horticultural studies.

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Zhang, Tao, Hao Feng, and Zhou-Mo Zeng. "Acoustic Emission Based Tank Bottom Floor Corrosion Detection." International Journal of Automation Technology 7, no. 2 (2013): 205–10. http://dx.doi.org/10.20965/ijat.2013.p0205.

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The tank bottom floor is a crucial component of large oil storage tanks, and its status has a pivotal impact on the integrity of the entire tank. Acoustic Emission (AE) monitoring is an advanced, in-service, nondestructive testing method internationally recognized to be capable of assessing the tank bottom floor without the necessity of prior tank cleaning. In this paper, the principle of Time Difference of Arrival (TDOA) is illustrated, and the efficiency of piezoelectric AE sensors is verified through a field experiment. The authors then investigate Mach-Zehnder interferometerbased AE sensors with a view to using optical fiber sensors as a substitute for acoustic emission detecting. The results of the experiment indicate that optical fiber AE sensors based on the Mach-Zehnder interferometer can be used as transducers sensitive to acoustic events, so they can serve as indicators of the imminent failure of a structure. In addition, some suggestions are put forward regarding forthcoming actual application.

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Hermawan, Yulius Deddy, Wibiana Wulan Nandari, Fauzan Irfandy, Riski Ajin Rahmadi, and Aryandhanu Mukti Tri Perkasa. "Process Dynamic of Two-Thermal-Tank-Series with Dead Time." Eksergi 17, no. 2 (2020): 45. http://dx.doi.org/10.31315/e.v17i2.3700.

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The multi-tank-series system could come up the problem of instability due to dead-time. The goals of this work are to study the dynamic behavior of Two-Thermal-Tanks-Series (TTTS) with dead time through the open loop experiment in laboratory, and to propose the new-module of fundamental chemical engineering practicum in field of process dynamic for undergraduate program. The two stirred-tank-heaters @10L were designed for heating of water fluid. Both of tanks were designed overflow to maintain their volume constant. The gate valve was installed in the inlet pipe of Tank-1 to adjust its volumetric flowrate (f). The inlet temperature of Tank-1 (T1), the liquid temperatures in Tank-1 (T2) and Tank-2 (T3) were measured by thermocouple multi-channels. The volt-ampere-regulators were used to adjust the electrical energy in Tank-1 (q1) and Tank-2 (q2). The mathematical model was solved and rigorously examined in Xcos/Scilab. In order to study the dynamic behavior of TTTS, the inlet flowrate disturbance was made based on step input change. According to our investigation in laboratory and open loop simulation, both Tank-1 and Tank-2 gave stable responses, the model’s responses showed the closed and similar trend with laboratory’s responses, and time delay of about 30 seconds has been found in Tank-2.

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Hall, Rebecca Jehne, Simon K. A. Robson, and Ellen Ariel. "Colour vision of green turtle (Chelonia mydas) hatchlings: do they still prefer blue under water?" PeerJ 6 (September 19, 2018): e5572. http://dx.doi.org/10.7717/peerj.5572.

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Background Several anatomical studies provide evidence that green turtles (Chelonia mydas) possess the necessary anatomy for colour vision. Behavioural experiments have previously been conducted with newly emerged hatchlings, concluding that they are attracted to shorter wavelengths compared to longer wavelengths within a terrestrial environment, suggesting a possible attraction towards blue. This paper assessed the colour vision of hatchlings within an aquatic environment, and investigated whether the attraction for shorter wavelengths remains consistent within water, whether the colour saturation of the chromatic stimuli was an important factor, and whether rearing and testing individual animals in different coloured housing tanks has an impact on their visual choices. Methods Forty-one hatchling green turtles were presented with a three-choice experiment where food was attached to three different coloured plates. The plates (blue, yellow, and red) were randomly arranged in the turtle’s tank and four different colour saturations were tested (100, 75, 50, and 25%). Turtles were individually placed into their housing tanks (coloured either red, white, blue or grey) with three different colour plates in front of them, from the same saturation level. The colour of the plate with food first approached and bitten by the turtle was recorded. Results The colour of the tank in which an individual was reared, and where experiments were conducted, significantly influenced which food item was selected on the different coloured plates. While individual turtles preferred to select the food items associated with blue plates across the entire experiment (66.1% of the time compared to 18.2% and 15.7% for yellow and red plates respectively), the preference for blue plates was influenced by the colour of the rearing/experimental tank. Individuals raised in red, white or blue tanks appeared to consistently prefer food on blue plates, but there appeared to be no plate colour preference by turtles in grey tanks. There was no significant effect of either colour saturation or the spatial arrangement of the three colours within an experimental tank on colour choice, and no significant interaction between tank colour and colour saturation. Discussion Thesefindings confirm that the terrestrial preference towards shorter wavelength colours, such as blue, compared to longer wavelength colours remains consistent within an aquatic environment. This preference for blue continues even as the colour saturation reduces from 100% down to 25%, and the colours become darker. Thus, it is suggested that green turtle hatchlings have a strong attraction towards blue. This attraction, however, is influenced by the colour of the tank the turtles were raised in. While this supports the notion that environmental colour may influence individual turtle visual capabilities, it suggests that this relationship is more complicated, and requires further investigation.

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Huang, Ying. "Demagnetizing Experiment of Magnetism-Concealed Tank Based on Smart Materials." Applied Mechanics and Materials 484-485 (January 2014): 151–56. http://dx.doi.org/10.4028/www.scientific.net/amm.484-485.151.

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The core component -----a set of coaxial densely winded degaussing loops of a magnetism-concealed tank is designed and made by experiment method. From the data, it can be concluded that the coaxial densely winded degaussing loops can eliminate the tanks magnetic field signs which are engendered by magnetization in the earth magnetic field, specially, the demagnetizing effect near the axis is more obvious. It should be paid attention to the direction of the demagnetizing electric current in experimentation, another important factor to get optimal demagnetizing effect is to seize the right time of demagnetizing electric current. If a demagnetizing electric current is kept too long, as can be seen from the table, the tanks magnetic field signs will be strengthened owing to the counter-rotational magnetization, which accords with the electromagnetic theories. In addition, the degaussing loops work characteristics are given in our auxiliary experiment. In conclusion this experiment design method provides a sustain for magnetism protection theory of equips, and a train of thought is offered for both the magnetism-concealed tanks designing and researching through the experiment process.

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Kotrasová, Kamila. "Fluid in Rectangular Tank – Frequency Analysis." Transactions of the VŠB – Technical University of Ostrava, Civil Engineering Series. 14, no. 1 (2014): 42–47. http://dx.doi.org/10.2478/tvsb-2014-0006.

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Abstract Ground-supported tanks are used to store a variety of liquids. During earthquake activity the liquid exerts impulsive and convective pressures (sloshing) on the walls and bottom of the rectangular tank. This paper provides theoretical background for analytical calculating of circular frequencies and hydrodynamic pressures developed during an earthquake in rectangular container. Analytical results of first natural frequency are compared with experiment.

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Kotrasova, Kamila. "Sloshing of Liquid in Rectangular Tank." Advanced Materials Research 969 (June 2014): 320–23. http://dx.doi.org/10.4028/www.scientific.net/amr.969.320.

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Ground-supported tanks are used to store a variety of liquids. During earthquake activity the liquid exerts impulsive and convective pressures (sloshing) on the walls and bottom of the rectangular tank. This paper provides theoretical background for analytical calculating of circular frequencies and hydrodynamic pressures developed during an earthquake in rectangular container. Analytical results of first natural frequency are compared with experiment.

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Pan, K. C., and I. M. Chao. "Analysis of Operating Principles and Flow Field Characteristics for a Diving Ballast Tank." Defence Science Journal 70, no. 5 (2020): 564–70. http://dx.doi.org/10.14429/dsj.70.15228.

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Operating principle and flow field characteristics of a diving ballast tank for application in submerged vehicles were investigated in the present study. As understanding the complex changes in the interior air-water two-phase flow field of the ballast tank during the diving process is difficult, this study specifically performed a ballast tank diving experiment. Experimental and numerical simulations to analyse the diving motions of the ballast tank were conducted. Authors comprehensively evaluated the flow field changes in the ballast tank and its surroundings. The experimental and numerical results were compared in terms of the observed displacements and velocities during diving. Both the results indicated similar motion trajectories and velocities. Authors effectively observed the air-water two-phase flow field change inside the ballast tank using this numerical method. Therefore, the numerical model constructed in this study can be useful for analysing the diving motions of ballast tanks and can effectively predict the interior flow field characteristics of a ballast tank.

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KOMATSU, Keiji, and Isao Yamaguchi. "B4 Vibration Experiment of Concentric Membrane Tank." Proceedings of the Space Engineering Conference 2005.14 (2005): 39–44. http://dx.doi.org/10.1299/jsmesec.2005.14.39.

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Chato, David J., and Timothy A. Martin. "Vented Tank Resupply Experiment: Flight Test Results." Journal of Spacecraft and Rockets 43, no. 5 (2006): 1124–30. http://dx.doi.org/10.2514/1.18145.

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Chang, Rui Li, Jun Han, and Guo Wei Cui. "Developing and Research on Liquid Level Control System of Double-Tank." Applied Mechanics and Materials 397-400 (September 2013): 1200–1203. http://dx.doi.org/10.4028/www.scientific.net/amm.397-400.1200.

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In the paper, the liquid level control system of double-tank is built, which bases on MCGS configuration software. Taking the liquid levels of double-tank as control object, the mathematics model is built, which is used for experiment and research. Moreover, the liquid level PID adjustor of single tank is designed, and P, PI and PID experiments are done in the step signal, which has important practical significance and reference value.

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Jendzelovsky, Norbert, and Lubomír Baláž. "Numerical Modeling of Cylindrical Tank and Compare with Experiment." Applied Mechanics and Materials 617 (August 2014): 148–51. http://dx.doi.org/10.4028/www.scientific.net/amm.617.148.

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This paper deals with a problem of eigenfrequencies of cylindrical tank (steel water tank). For an ANSYS analysis of eigenfrequencies some numerical models of cylindrical tank are used and finally results got by these models are compared with experimental results in laboratory. In final part of the paper some crucial results are presented both in a graphical and numerical way.

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Trimulyono, Andi, Hirotada Hashimoto, and Akihiko Matsuda. "Experimental Validation of Single- and Two-Phase Smoothed Particle Hydrodynamics on Sloshing in a Prismatic Tank." Journal of Marine Science and Engineering 7, no. 8 (2019): 247. http://dx.doi.org/10.3390/jmse7080247.

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This study aimed to validate the single-phase and two-phase smoothed particle hydrodynamics (SPH) on sloshing in a tank. There have been many studies on sloshing in tanks based on meshless particle methods, but few researchers have used a large number of particles because there is a limitation on the total number of particles when using only CPUs. Additionally, few studies have investigated the influence of air phase on tank sloshing based on two-phase SPH. In this study, a dedicated sloshing experiment was conducted at the National Research Institute of Fishing Engineering using a prismatic tank with a four-degrees-of-freedom forced oscillation machine. Three pressure gauges were used to measure local pressure near the corners of the tank. The sloshing experiment was repeated for two different filling ratios, amplitudes, and frequencies of external oscillation. Next, a GPU-accelerated three-dimensional SPH simulation of sloshing was performed using the same conditions as the experiment with a large number of particles. Lastly, two-dimensional sloshing simulations based on single-phase and two-phase SPH were carried out to determine the importance of the air phase in terms of tank sloshing. Based on systematic comparisons of the single-phase SPH, two-phase SPH, and experimental results, this paper presents a detailed discussion of the role of air-phase in terms of sloshing. The currently achievable accuracy when using SPH is demonstrated together with a few sensitivity analyses of SPH parameters.

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Kotrasová, Kamila. "Vibration Analysis of Simply Supported Rectangular Tank Partially Filled with Water." MATEC Web of Conferences 210 (2018): 04003. http://dx.doi.org/10.1051/matecconf/201821004003.

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Ground-supported tanks are used as fluid storage. One of the phenomena associated with the seismic response of liquid-filled tanks is the fluid motion occurring that causes “sloshing” at the top of free surface. This paper presents the theoretical of fluid response of rectangular tank due to horizontal acceleration of tank bottom, the impulsive and convective (sloshing) pressure and the fluid natural frequencies. The vibration analysis of fluid filled rectangular container was monitored and was evaluated in experiment for purpose to evaluation of the first frequency mode and vibration response of fluid were analysed by using FEM.

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Zhang, Chao, Wei Shao, Fucai Yue, Pooya Saffari, and Wen Nie. "Physical Tank Experiment Investigation on Rainfall Producing Groundwater Level in Homogeneous Material Slopes." Geofluids 2019 (May 7, 2019): 1–13. http://dx.doi.org/10.1155/2019/5368765.

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It has been recognized that pore water pressure (PWP) changes in response to precipitation play a critical role in rainfall-triggered landslides. Tank models as a kind of undetermined model are widely applied for estimating groundwater levels in slopes. Most of these applications treat the tank models as a theoretical model. Therefore, in this study, physical tank experiments are reported, indicating an evaluation of three typical conceptual tank models (i.e., simple tank model, surface runoff tank model, and lateral water flow supply tank model). To reduce the slope structure controlling affection, the study takes homogenous soil material as the simulation of the slope mass. The experimental results demonstrated how the groundwater tables producing pore water pressure were affected by infiltration time lags, surface runoff, and lateral flow.

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Wu, C. H., O. M. Faltinsen, and B. F. Chen. "Time-Independent Finite Difference and Ghost Cell Method to Study Sloshing Liquid in 2D and 3D Tanks with Internal Structures." Communications in Computational Physics 13, no. 3 (2013): 780–800. http://dx.doi.org/10.4208/cicp.261011.020212s.

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AbstractA finite difference scheme with ghost cell technique is used to study viscous fluid sloshing in 2D and 3D tanks with internal structures. The Navier-Stokes equations in a moving coordinate system are derived and they are mapped onto a time-independent and stretched domain. The staggered grid is used and the revised SIMPLEC iteration algorithm is performed. The developed numerical model is rigorously validated by extensive comparisons with reported analytical, numerical and experimental results. The present numerical results were also validated through an experiment setup with a tank excited by an inclined horizontal excitation or a tank mounted by a vertical baffle. The method is then applied to a number of problems including sloshing fluid in a 2D tank with a bottom-mounted baffle and in a 3D tank with a vertical plate. The phenomena of diagonal sloshing waves affected by a vertical plate are investigated in detail in this work. The effects of internal structures on the resonant frequency of a tank with liquid are discussed and the present developed numerical method can successfully analyze the sloshing phenomenon in 2D or 3D tanks with internal structures.

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Bégout Anras, M. L., D. Covés, G. Dutto, P. Laffargue, and F. Lagardère. "Tagging juvenile seabass and sole with telemetry transmitters: medium-term effects on growth." ICES Journal of Marine Science 60, no. 6 (2003): 1328–34. http://dx.doi.org/10.1016/s1054-3139(03)00135-8.

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Abstract The effects of tagging with acoustic transmitters on the growth of juvenile seabass, Dicentrarchus labrax (L.) (initial mean mass±SD, 173 g ± 23.4) in a 47 d tank experiment, and sole, Solea solea (L.) (103.2 g ± 14.8) in a 72 d tank experiment and (104.0 g ± 18.4) in a 58 d salt marsh mesocosm experiment were examined. Twenty externally tagged seabass grew more slowly than the 20 with surgically implanted tags, which reached the same mass as nine control fish. Movements of the external transmitter's harness caused abrasions of the skin and loss of the tag in 60% of the cases. We thus recommend implanting transmitters for telemetry studies of juvenile seabass weighing between 120 and 214 g and carrying a tag that represents 2.2–2.5% of body mass. Both tank and mesocosm experiments conducted on juvenile sole concluded that the externally attached tag retention rate was good, but at the expense of the fish growth rate.

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Vesga-Rodríguez, Claudia Patricia, Leonardo David Donado-Garzón, and Monroe Weber-Shirk. "Evaluation of high rate sedimentation lab-scale tank performance in drinking water treatment." Revista Facultad de Ingeniería Universidad de Antioquia, no. 90 (December 14, 2018): 9–15. http://dx.doi.org/10.17533/udea.redin.n90a02.

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The Cornell University AguaClara program researches ways to improve the process of potable water treatment at low cost and no energy dependent. A High Rate Sedimentation (HRS) process that uses upward flow and less area than traditional tanks was investigated. The objective was to analyze parameters affecting HRS tank performance including velocity, density of the floc blanket and location of plate settlers in a laboratory scale HRS tank. Different velocities were set during the experiment, and the resulting performance of the floc blanket was evaluated through continuous turbidity measurements. Results demonstrated that the lab-scale tank allows the creation of a floc blanket and is a versatile design with constraints of visibility and accessibility. In addition, performance of the sedimentation tank improves at lower up flow velocities; however, the study suggests that plate settlers at the top of the tank stabilized the floc blanket at higher velocities, as a consequence of denser floc blankets created by the plates.

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Wang, Qi Ming, Bin Sun, and Wei Guo Zhao. "The Experiment Study on Tank Capacity Measurement with Flowmeter." Advanced Materials Research 516-517 (May 2012): 1105–8. http://dx.doi.org/10.4028/www.scientific.net/amr.516-517.1105.

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To analyze the accuracy in the volume measurement of vertical tank with flowmeter, experiment based on volume measurement device of standard flowmeter method with different flowmeter is made in this paper. The capacity values of different liquid level in tank which are used to fitting and correcting the actual results of continuous measurement are calibrated by standard flowmeter and level gauge. Fitting coefficient can be used to analyze the accuracy of other measurement. Experiment results show that it is feasible to measure the capacity of vertical tank by standard flowmeter with high measure accuracy and small measure error.

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Liu, Zhi Sheng, Ji Min Zhang, and Yong Qiang Wang. "Numerical and Experimental Researches of 1:10 Tank Car Longitudinal Vibration with Fluid Sloshing." Applied Mechanics and Materials 365-366 (August 2013): 420–24. http://dx.doi.org/10.4028/www.scientific.net/amm.365-366.420.

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A 1:10 tank-car 2D fluid simulation model based on the computational fluid dynamics is established, and exchange the data with tank-car vibration model while simulating. In the paper, the 2 dimension fluid-structure coupling tank-car which owns two DOF is simulated, and the affect of fluid sloshing to tank-car longitudinal vibration is analyzed through the coupled vibration experiment. In the simulation and experiment, fluid sloshing increased the tanker longitudinal vibration acceleration amplitude and slowed response time is obtained through analyzing the difference between the different volume of fluid and the relevant solid without sloshing, and the difference of longitudinal vibration between full tank and non-full tank is significant.

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Tapsuwan, Sorada, Stephen Cook, and Magnus Moglia. "Willingness to Pay for Rainwater Tank Features: A Post-Drought Analysis of Sydney Water Users." Water 10, no. 9 (2018): 1199. http://dx.doi.org/10.3390/w10091199.

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The Millennium Drought across Australia during the 2000s placed cities under pressure in providing urban water security. In Sydney, Australia’s largest city, a comprehensive water demand programme triggered a significant reduction in per capita water consumption. The water demand programme included incentives for the installation of rainwater tanks. This paper explores the willingness to pay (WTP) for rainwater tank features in the post-drought context. Rainwater tanks have been demonstrated as an effective measure to reduce mains water demand, but they also provide broader environmental and economic benefits, such as the reduction of urban runoff to waterways and deferred capital investment in augmenting capacity of water supply system. Therefore, there is the need to better understand WTP for rainwater tank features across the community. An online survey was administered to a sample of Sydney households, with 127 respondents completing a rainwater tank choice experiment that explored their WTP for different rainwater tank features and the socio-psychological constructs that might influence their tendency to adopt rainwater tanks. The results demonstrated that householders surveyed valued slimline rainwater tanks, as they are likely to be less obstructive, particularly given the trend for smaller lot sizes and increased building size. Householders also placed greater value on connecting the rainwater tank to outdoor demands, which may be influenced by perceived vulnerability of outdoor uses to water restrictions relative to indoor uses. The survey analysis also identified that the householders most receptive to installing a rainwater tank are likely to be conformists, who compare themselves to peers, and spend significant effort when making decisions, and are already taking actions to conserve water. The findings are of significance when targeting future education programmes and designing financial incentives to encourage rainwater tank adoption.

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Liu, De Yu, and Zhou Fang. "Experimental and Numerical Simulation Investigation on Dynamic Response of Liquid Storage Tanks under Seismic Excitations." Applied Mechanics and Materials 494-495 (February 2014): 763–66. http://dx.doi.org/10.4028/www.scientific.net/amm.494-495.763.

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A large-scale earthquake simulation experiment about the unanchored cylindrical steel liquid storage model tanks has been completed. The self-vibration characteristics of the model tanks with liquid inside were investigated based on the experimental data of the acceleration dynamic response. The seismic table test, the analysis methods are designed and conducted, and experimental results of the model tanks were carefully measured. Furthermore, ANSYS finite element software was used to simulate and calculate the low order natural frequency and fundamental frequency of the model tank systems according to the national design standard. The reasons for the existence of consistency and differences between the results obtained from experiments and numerical simulation were discussed.

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Guan, Jingfu, Jun Fang, Dan Zhang, Jinjun Wang, and Yongming Zhang. "Experiment Study of Oil Tank Fire Characteristics Dependent on the Opening of Tank Top." Procedia Engineering 62 (2013): 932–39. http://dx.doi.org/10.1016/j.proeng.2013.08.145.

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Alonso, D. G., J. Constantin, R. S. Oliveira Jr, et al. "Selectivity of glyphosate in tank mixtures for RR soybean in sequential applications with mixtures only in the first or second application." Planta Daninha 28, no. 4 (2010): 865–75. http://dx.doi.org/10.1590/s0100-83582010000400020.

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Tank mixtures among herbicides of different action mechanisms might increase weed control spectrum and may be an important strategy for preventing the development of resistance in RR soybean. However, little is known about the effects of these herbicide combinations on soybean plants. Hence, two experiments were carried out aiming at evaluating the selectivity of glyphosate mixtures with other active ingredients applied in postemergence to RR soybean. The first application was carried out at V1 to V2 soybean stage and the second at V3 to V4 (15 days after the first one). For experiment I, treatments (rates in g ha-1) evaluated were composed by two sequential applications: the first one with glyphosate (720) in tank mixtures with cloransulam (30.24), fomesafen (125), lactofen (72), chlorimuron (12.5), flumiclorac (30), bentazon (480) and imazethapyr (80); the second application consisted of isolated glyphosate (480). In experiment II, treatments also consisted of two sequential applications, but tank mixtures as described above were applied as the second application. The first one in this experiment consisted of isolated glyphosate (720). For both experiments, sequential applications of glyphosate alone at 720/480, 960/480, 1200/480 and 960/720 (Expt. I) or 720/480, 720/720, 720/960 and 720/1200 (Expt. II) were used as control treatments. Applications of glyphosate tank mixtures with other herbicides are more selective to RR soybean when applied at younger stages whereas applications at later stages might cause yield losses, especially when glyphosate is mixed with lactofen and bentazon.

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HAMAMOTO, Takuji, and Ken-ichi FUJITA. "WATER TANK EXPERIMENT OF SHAPE-VARIABLE FLOATING STRUCTURES." Journal of Structural and Construction Engineering (Transactions of AIJ) 81, no. 724 (2016): 1039–49. http://dx.doi.org/10.3130/aijs.81.1039.

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NISHIMOTO, Miki, Keiji KOMATSU, and Hideyo NEGISHI. "C1 Vertical Vibration Experiment of Concentric Membrane Tank." Proceedings of the Space Engineering Conference 2006.15 (2007): 41–44. http://dx.doi.org/10.1299/jsmesec.2006.15.41.

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Corni, Federico. "Water tank experiment clears up some refraction misconceptions." Physics Education 41, no. 2 (2006): 103–4. http://dx.doi.org/10.1088/0031-9120/41/2/f02.

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41

Roux, Philippe. "Tank experiment: The ultrasonic approach to ocean physics." Journal of the Acoustical Society of America 123, no. 5 (2008): 3598. http://dx.doi.org/10.1121/1.2934758.

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Kotrasova, Kamila, and Eva Kormaníková. "A Study on Sloshing Frequencies of Liquid-Tank System." Key Engineering Materials 635 (December 2014): 22–25. http://dx.doi.org/10.4028/www.scientific.net/kem.635.22.

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Liquid storage tanks are used to store of liquids. During earthquake activity the liquid exerts impulsive and convective pressures (sloshing) on the walls and bottom of tank. In the present paper, experimental and analytical study is taken up to obtain sloshing frequency of liquid contained in rectangular calculating of circular frequencies fluid in rectangular container. Analytical results of first natural frequency are compared with experiment.

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Kang, Sang Guk, Myung Gon Kim, Sang Wuk Park, Chun Gon Kim, and Cheol Won Kong. "Liquid Nitrogen Storing and Pressurization Test of a Type III Cryogenic Propellant Tank." Key Engineering Materials 334-335 (March 2007): 397–400. http://dx.doi.org/10.4028/www.scientific.net/kem.334-335.397.

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Nowadays, researches for replacing material systems for cryogenic propellant tanks by composites have been being performed for the purpose of light weight of a launch vehicle. In this paper, a type III propellant tank, which is composed of the composite developed for cryogenic use and an aluminum liner, was fabricated and tested considering actual operating environment, that is, cryogenic temperature and pressure. For this aim, liquid nitrogen (LN2) was injected into the fabricated tank and in turn, gaseous nitrogen (GN2) was used for pressurization. During this test procedure, strains and temperatures on the tank surface were measured. ESG (electric strain gage) and thermocouple were used for the measurement of strain and temperature, respectively. Delamination between hoop layer and helical one, was detected during the experiment. Finally, Tsai-Wu criterion for the tank and microscopy for the composite/aluminum ring specimen were carried out to investigate the reason why delamination had happened.

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Vérez, David, Emiliano Borri, Alicia Crespo, Gabriel Zsembinszki, Belal Dawoud, and Luisa F. Cabeza. "Experimental Study of a Small-Size Vacuum Insulated Water Tank for Building Applications." Sustainability 13, no. 10 (2021): 5329. http://dx.doi.org/10.3390/su13105329.

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Insulation of thermal energy storage tanks is fundamental to reduce heat losses and to achieve high energy storage efficiency. Although water tanks were extensively studied in the literature, the enhancement of the insulation quality is often overlooked. The use of vacuum insulation has the potential to significantly reduce heat losses without affecting the dimension of the storage system. This paper shows for the first time the results of the heat losses tests done for a 0.535 m3 water tank for residential building applications built with a double wall vacuum insulation. The different tests show that the rate of heat losses strictly depends on the temperature distribution inside the tank at the beginning of the experiment. Compared to a conventional water tank insulated with conventional materials, the U-value of the lateral surface was reduced by almost three times (from 1.05 W/K·m2 to 0.38 W/K·m2) using vacuum insulation. However, the bottom part, which is usually used to place the support parts and the piping, is the critical design part of those tanks acting as a thermal bridge with the ambient and enhancing heat losses.

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Dachi, Reliusman, and Ikhsan Setiawan. "Measurement of gravitational acceleration with the leak tank method." Journal of Physics: Theories and Applications 2, no. 1 (2018): 19. http://dx.doi.org/10.20961/jphystheor-appl.v2i1.29000.

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An experimental device of the mechanics of tank draining under gravity has been constructed. It mainly consists of a cylindrical tank with a circular orifice at the center bottom of the tank. The inner radius of the tank is 134 mm, while there are seven variations of orifice radius, those are 2.25 mm, 2.50 mm, 3.00 mm, 3.50 mm, 4.00 mm, 5.00 mm, and 6.00 mm. The tank is filled by water which is then allowed to flow out throuh the orifice. This experiment can be used to measure the value of gravitational acceleration () on the experiment location. We call this method as the leak tank method. The measurement of g is carried out by measuring the total time to drain the tank from 300 mm initial height of water surface inside the tank for various orifice radius. It is found in this experiment that = (9.89± 0.03) m/s2. This result is good enough because it is almost the same as the conventional standar value of 9.80665 m/s2 with discrepancy of around 0.85%. It indicates that the leak tank method which is described in this paper can be used to estimate the gravitational acceleration value with a good result.

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Kozłowski, Michał, Iwona Piotrowska, and Bożena Szczepkowska. "Effect of feed pellet size and tank water level on growth performance in juvenile pikeperch, Sander lucioperca (L.), reared in a recirculating system." Fisheries & Aquatic Life 29, no. 2 (2021): 88–99. http://dx.doi.org/10.2478/aopf-2021-0011.

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Abstract Three 28-day experiments were performed to assess the impact of two sinking feed pellet sizes (0.5–1.0 and 0.9–1.6 mm for experiment I, 0.9–1.6 and 1.3–2.0 mm for experiment II, and 1.3–2.0 and 1.6–2.4 mm for experiment III) and two tank water levels (0.50 and 0.65 m) on the growth performance of juvenile pikeperch of different mean initial body weights in experiment I, II, III respectively (1.1 ± 0.1 g, 5.1 ± 0.2 g, 16.6 ± 0.5 g) at different ages (67, 102, and 137 days post hatch). Two-factor analysis of variance showed that the growth of pikeperch was positively correlated with feed pellet size in experiment I, both feed pellet size and water level in experiment II, and water level in experiment III. The feed pellet sizes of 0.9–1.6 and 1.3–2.0 mm at body weights of 1.1 g and 5.1 g, respectively, are recommended to promote more efficient pikeperch growth rates. In the case of pikeperch with a body weight of 16.6 g, the feed pellet size was less important than the tank water level.

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Brodeur, Samuel, Van Ngan Lê, and Henri Champliaud. "A Nonlinear Finite-Element Analysis Tool to Prevent Rupture of Power Transformer Tank." Sustainability 13, no. 3 (2021): 1048. http://dx.doi.org/10.3390/su13031048.

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High-energy internal failures of transformers are catastrophic events which are hardly predictable. For this reason, a full-scale controlled experiment represents a valuable learning opportunity to gather accurate information about sequence of events during the very short time in which the failure occurs. Controlled parameters include tank design, material properties, experimental load and measurements. In this paper, we present a detailed investigation using nonlinear finite-element analysis of a 210-MVA transformer high-pressure experiment. We begin by evaluating the relationship between internal arcing pressure rise and tank expansion characteristics. Since this relationship is not linear due to geometric and material nonlinearities, an iterative process is proposed to ensure result accuracy. Stress–strain material properties are retrieved by tension experiments of specimens extracted from the tested tank to enable accurate comparison of numerical and experimental results. It is shown in this paper that nonlinear material parameters have a small influence on the tank pressure rise, but a significant one on large strain prediction and therefore the true stress-strain curve is recommended. In addition, the ductile rupture criterion based on the ultimate plastic strain of the material correlates with the experimental and explicit dynamic analysis results. This can ensure a certain design margin for tank rupture prevention.

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Perevezentsev, G. A., V. A. Gorbunov, and O. B. Kolibaba. "Estimation of the dependence of aerodynamic resistance of the bulk tank on porosity and rate of filtration." Vestnik IGEU, no. 2 (2019): 16–24. http://dx.doi.org/10.17588/2072-2672.2019.2.016-024.

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One of the effective ways to intensify heat exchange processes in the bulk tank is organization of gas filtration through the tank. However, it is necessary to compare the positive effect obtained by reducing the heating time and, hence, the required amount of heat input with the resistance of the bulk tank, which affects the choice of equipment. The existing formulas for determining tank layer resistance, as a rule, have a limited application range due to a number of structural parameteres. Thus, obtaining the value of the aerodynamic resistance of bulk tanks of different structures is an important task for determining the amount of energy consumed for the organization of the filtration process. The work employed the data obtained in the experimental study of fluid filtration through a porous medium in the range of porosity values. The method of nonlinear regression analysis was used to approximate the desired dependence. Based on the data on the resistance of bulk tanks of different porosity obtained in the experimental study, the authors have derived an empirical polynomial dependence of the resistance of bulk tanks on the fluid mass flow rate and porosity. This equation can be applied for the filtration rate values from 2 to 8 m/s and porosity values from 0,345 to 0,888 regardless of the structural parameters of the bulk tank layer. The authors carried out mathematical modeling of the air filtration process through the tank by replacing the real structure with a fractal-like model. The obtained results allow optimizing the operating parameters of the equipment in thermal heating furnaces, and the presented dependence can be used to determine the aerodynamic resistance of bulk tanks, affecting the choice of traction equipment in the reconstruction of furnaces. The accuracy of the obtained results is determined by the experiment error, which does not exceed 7 %.

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Elmore, Matthew T., James A. Murphy, and Bradley S. Park. "Herbicide Regimens for Creeping Bentgrass Control in Kentucky Bluegrass." HortScience 53, no. 11 (2018): 1689–94. http://dx.doi.org/10.21273/hortsci13050-18.

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Creeping bentgrass (CBG; Agrostis stolonifera L.) is a problematic weed of cool-season turfgrass. The herbicide mesotrione is often used for selective control, but CBG often recovers from sequential applications. Research evaluated the efficacy of mesotrione-based sequential application regimens for CBG control in kentucky bluegrass (Poa pratensis L.) over a 2-year period. In two separate experiments, identical herbicide regimens were initiated in Oct. 2014 or May 2015 and then reapplied to the same plots in Oct. 2015 or May 2016, respectively. Regimens consisted of various sequential application regimens of mesotrione alone (totaling 560 g·ha–1 annually), three sequential applications of mesotrione (175 g·ha–1) tank-mixed with either triclopyr ester (560 or 1120 g·ha–1) or amicarbazone (50 or 100 g·ha–1), and topramezone (32 or 37 g·ha–1) tank-mixed with triclopyr ester (1120 g·ha–1). At the end of each 2-year experiment, the most effective treatments did not eliminate CBG completely. Among treatment regimens initiated in the fall, the most effective treatments reduced CBG cover 49% to 73% at the conclusion of the experiment in Oct. 2016. At the conclusion of the spring experiment in May 2017, the most effective treatments reduced CBG cover 66% to 94%. Topramezone + triclopyr tank mixtures were less effective than mesotrione-containing treatments on most dates. Mesotrione + amicarbazone tank mixtures reduced CBG more effectively than mesotrione alone, but these tank mixtures also caused severe kentucky bluegrass injury. CBG cover reductions from mesotrione + triclopyr tank mixtures and mesotrione alone were generally similar. Among mesotrione-only regimens, there were no consistent differences in CBG cover reduction. This research indicates that turf managers using a selective herbicide regimen to control CBG in kentucky bluegrass should apply mesotrione at the maximum annual use rate (560 g·ha–1) in two to four sequential applications at 2- to 3-week intervals.

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Kotrasova, Kamila, Iveta Hegedusova, Slavka Harabinova, Eva Panulinova, and Eva Kormanikova. "The Possible Causes of Damage to Concrete Tanks, Numerical Experiment of Fluid-Structure-Soil Interaction." Key Engineering Materials 738 (June 2017): 227–37. http://dx.doi.org/10.4028/www.scientific.net/kem.738.227.

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Ground-supported open top circular concrete tanks are critical and strategic structures. There tanks are used in the commercial and industrial applications to store a variety of liquids as water or other products such as liquid chemicals and hazardous substance. Damages or collapse of containers may be due to the influence of surrounding aggressive environments or an earthquake. This paper provides numerical model on seismic response of fluid - structure - soil interaction. The article also will be described impact aggressive environment in terms of standards and its impact on the quality of the concrete tank.

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Journal articles on the topic 'Tank experiment'

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