Gotowe bibliografie tematyczne / Submergence ratio

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Gotowa bibliografia na temat „Submergence ratio”

Autor: Grafiati

Data publikacji: 3 czerwca 2025

Data aktualizacji: 31 lipca 2025

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Artykuły w czasopismach na temat "Submergence ratio"

Abou, Taleb F. S., and J. A. Al-jarrah. "Experimental Study of an Air Lift Pump." Engineering, Technology & Applied Science Research 7, no. 3 (2017): 1676–80. https://doi.org/10.5281/zenodo.809261.

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In this investigation the effect of submergence ratio and air jacket on the performance of the air lift pump has been studied. Three types of air jackets in addition to five levels of submergence ratios were used. Each air jacket has a number of drilled holes distributed uniformly at the perimeter of the inside pipe, where the total area of drilled holes was kept constant. It has been found that the water flux increases as the submergence ratio increased. Also it was found that the minimum air flux required to start discharging water from the pump decreases as the submergence ratio increases.

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AlMaliky, Salam J., and Hayder A. Alajawi. "Effect of Suction Pipe Diameter and Submergence Ratio on Air Lift Pumping Rate." Tikrit Journal of Engineering Sciences 16, no. 1 (2009): 63–73. http://dx.doi.org/10.25130/tjes.16.1.05.

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The increasingly importance for the uses of the air lift pump in widespread list of fields (mining, nuclear industries, agricultural uses, petroleum industries…etc.) makes it very interested for the researchers to find tools to raise the performance outcome of such pumps. An air lift pump system is setup to study the effect of the suction pipe diameter and submergence ratio on the liquid (water) pumping rate. The system has a lift pipe of (0.021 m) diameter and (1.25 m) length. Five diameters for the suction pipe (0.021, 0.027, 0.033, 0.048 and 0.063 m) with a fixed length of (0.3 m), are test

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Al-Maliky, Salam J. Bash. "Effect of Suction Pipe Diameter and Submergence Ratio on Air Lift Pumping Rate." Advanced Materials Research 1036 (October 2014): 703–7. http://dx.doi.org/10.4028/www.scientific.net/amr.1036.703.

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The increasingly importance for the uses of the air lift pump in widespread list of fields (mining, nuclear industries, agricultural uses, petroleum industries...etc.) makes it very interested for the researchers to find tools to raise the performance outcome of such pumps. An air lift pump system was setup to study the effect of the suction pipe diameter and submergence ratio on the liquid (water) pumping rate. The system has a lift pipe of (0.021 m) diameter and (1.25 m) length. Five diameters for the suction pipe (0.021, 0.027, 0.033, 0.048 and 0.063 m) with a fixed length of (0.3 m), were

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Aka, Mfoniso U., Okechukwu E. Agbasi, Okonna Nsidibe Ndaraka, and Osu Azuanamibebi Derikuma. "Assessment of Geologic Effect of Road Submergence Depths on Soil Subgrade Strength in Eket, South-South Nigeria." International Journal of Scientific Research and Management 10, no. 06 (2022): 09–21. http://dx.doi.org/10.18535/ijsrm/v10i6.g1.

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Road submergence is a common occurrence in Eket, South-South Nigeria, resulting in massive outlays for road construction and alimony. Fundamentally, the delineation of roadway structures is based on the strength of consolidated soil avowed as the subgrade. Consequently, the subgrade is the in situ material upon which the roadway structure is placed. It is necessary to know the modes of damage to roads caused by submergence. This study assesses the effect of road submergence depths and the extent of submergences on the subgrade strength of soil samples carried out on the Uquo Eket road that was

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Abou Taleb, F. S., and J. A. Al-jarrah. "Experimental Study of an Air Lift Pump." Engineering, Technology & Applied Science Research 7, no. 3 (2017): 1676–80. http://dx.doi.org/10.48084/etasr.1207.

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V, KRISHNA KUMAR, and SUBRAMANIAN S. "ECONOMICS OF RICE CULTIVATION UNDER DIFFERENT LEVELS OF NITROGEN AND WATER MANAGEMENT PRACTICES." Madras Agricultural Journal 81, November (1994): 591–98. http://dx.doi.org/10.29321/maj.10.a01591.

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Results of field experiment on the economics of water and N management practices on low land rice indicated that grain yield increased upto 150 kg N ha' in the South West Monsoon (SWM) and Summer seasons. Continuous 5 em submergence (1) or recouping submergence one day after disappearance (12) did not influence grain yield during SWM whereas continuous submergence was necessary to record more grain yield during summer. Straw yield recorded were highest with continuous submergence in both the seasons and with 225 kg N ha in SWM season and 150 kg N ha-1 in summer season. Gross and net returns as

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Rahimzadeh, Amin, Parviz Ghadimi, Mohammad A. Feizi Chekab, and Mohammad H. Jabbari. "Determining Transmission Coefficient of Propagating Solitary Wave over Trapezoidal Breakwater and Parametric Studies on Different Influential Factors." ISRN Mechanical Engineering 2014 (April 10, 2014): 1–7. http://dx.doi.org/10.1155/2014/841327.

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The objective of this study is to numerically investigate transmission coefficient of submerged trapezoidal breakwater of various configurations subjected to solitary waves. Boussinesq equations of Madsen and Sorensen are applied as governing equations for simulation purposes. Discretization of governing equations is accomplished using Galerkin finite element method and Adams-Bashforth-Moulton predictor-corrector method is considered for time integration. In order to obtain transmission coefficients, two gauges are considered before and after the submerged breakwater to record initial and tran

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Putri Renata, Nellis Nadinda, Budi Setiadi Daryono, Wiko Arif Wibowo, and Diah Rachmawati. "Physiological responses and production of Gama Melon Parfum (Cucumis melo L. cv. GMP) on different water availability." Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) 52, no. 3 (2024): 389–99. https://doi.org/10.24831/jai.v52i3.54022.

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Gama Melon Parfum (GMP) cultivar is a result of crossbreeding between the Natsuno Omoide and Miyamauri melon varieties in 2011. GMP exhibits a unique phenotypic characteristic, including a bitter taste of the fruit flesh and produces a stronger aroma. The objective of this study was to investigate the physiological responses and productivity of GMP under varying water conditions. The experiment was conducted using a single factor consisting of different levels of water availability with field capacity at 50%, 75%, and 100%, as well as submergence at 2 cm, 4 cm, and 8 cm above the soil surface.

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Poursorkhabi, Ramin Vafaei, and Roghayeh Ghasempour. "Possibilities to use the meta model and classical approaches to evaluate the impact of hydraulic conditions in prediction of the critical submergence depth ratio." Water Supply 19, no. 4 (2018): 1055–65. http://dx.doi.org/10.2166/ws.2018.153.

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Abstract One of the hydraulic phenomena that mainly occurs during the water withdrawal process of channels is the formation of vortices that can cause many problems for the hydro-mechanical facilities of intakes. In the current study, classical models and meta model approaches (i.e. Support Vector Machine and Gene Expression Programming) were applied to evaluate the impact of pipe diameter and hydraulic condition changes in prediction of the critical submergence depth ratio in horizontal intakes. In this regard, two types of critical submergence experiments, based on bottom clearance, were con

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Azamathulla, H. Md, and Z. Ahmad. "GP approach for critical submergence of intakes in open channel flows." Journal of Hydroinformatics 14, no. 4 (2012): 937–43. http://dx.doi.org/10.2166/hydro.2012.089.

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This technical paper presents the genetic programming (GP) approach to predict the critical submergence for horizontal intakes in open channel flow for different bottom clearances. Laboratory data from the literature for the critical submergence for a wide range of flow conditions were used for the development and testing of the proposed method. Froude number, Reynolds number, Weber number and ratio of intake velocity and channel velocity were considered dominant parameters affecting the critical submergence. The proposed GP approach produced satisfactory results compared to the existing predi

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Rozprawy doktorskie na temat "Submergence ratio"

Dawson, E. "An investigation into the effects of submergence depth, speed and hull length-to-diameter ratio on the near surface operation of conventional submarines." Thesis, 2014. https://eprints.utas.edu.au/22368/1/Whole-Dawson-thesis.pdf.

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The strategic requirement for naval submarines to operate in near surface and littoral environments continues to increase as they are more frequently employed to support joint force missions. The operational workload for helmsmen and the risk to mission safety and success are significantly increased due to the interaction between the submarine and the free-surface. This thesis reports on an experimental investigation into the effects of submergence depth, speed of advance and length-to-diameter ratio on the interaction between a streamlined axisymmetric body and the free-surface when tr

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Części książek na temat "Submergence ratio"

G, Sankara, and Sivapullaiah P V. "CONCRETE MIX DESIGN FORMAT FOR COMPUTERS AS PER IS10262-2009." In Futuristic Trends in Construction Materials & Civil Engineering Volume 3 Book 2. Iterative International Publishers, Selfypage Developers Pvt Ltd, 2024. http://dx.doi.org/10.58532/v3bice2p4ch2.

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Concrete is one of the most widely used construction material across the globe in various civil infrastructure activities. It is also a material which is difficult to produce consistently to meet the prescribed specifications. Concrete is a composite material consisting of a cementitious paste (cement+ water) and inert aggregate (coarse and fine) filler materials. Properties and quality of locally available component materials, tools and equipment used for proportioning, mixing and vibrating, skills of the workers and supervision involved and exposure conditions etc., affect the properties of

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Streszczenia konferencji na temat "Submergence ratio"

Hanafizadeh, P., M. H. Saidi, A. Zamiri, and A. Karimi. "Effect of Bubble Size and Angle of Tapered Upriser Pipe on the Effectiveness of a Two Phase Lifting Pump." In ASME 2009 Fluids Engineering Division Summer Meeting. ASMEDC, 2009. http://dx.doi.org/10.1115/fedsm2009-78214.

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Two phase lifting pumps are devices with the ability of lifting liquid phase by injecting the gas phase. Parameters which affect the performance of these pumps are divided into two groups. The first group contains design parameters such as diameter of the pipe, tapering angle of the upriser pipe and the submergence ratio which is the ratio of immersed length to the total length of the upriser. The second group includes operating parameters, such as the gas flow rate, bubble diameter, bubble distribution and inlet gas pressure. In this research, the performance of two phase lifting pump is inve

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Norizan, Tajul Ariffin, Zambri Harun, Wan Hanna Melini Wan Mohtar, and Shahrir Abdullah. "Characteristics of Swirl Angle in Pump Intake Flow Near the Minimum Inlet Submergence." In ASME-JSME-KSME 2019 8th Joint Fluids Engineering Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/ajkfluids2019-5053.

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Abstract Swirling flow in pump sump intake has been the subject of discussion for the past decades due to the detrimental effects brought about by its existence. Among the effects of swirling flow are reduced pump efficiency, cavitation, excessive vibration and load imbalance at the pump impeller which are caused by hydraulic problems associated to swirling flow such as swirls and vortices. One of the remedial measures for preventing such occasion is by keeping the pump inlet submerged above a defined value known as the minimum inlet submergence. It is the minimum submergence required to reduc

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Takano, Satoru, Sotaro Masanobu, Shigeo Kanada, Masao Ono, and Hiroki Sasagawa. "Experimental Studies of Air-Lift Pump for Deep Sea Mining." In ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/omae2018-77812.

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The air-lift pumping system is one of the promising method for subsea mineral lifting. It is significant to figure out the relation between water flux and injected air volume or submergence ratio. In this paper, the authors conducted the experiment to obtain basic data for vertical air-lift pumping. As the results of the experiment, the water flux increased with increasing the submergence ratio. Then the water flux increased with increasing the injected air volume up to a value. In addition, the authors calculated the solid flux using large internal diameter of pipe. The calculated results are

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Little, J., S. Pan, and E. Follett. "Determining Surface Velocity Coefficients in Headwater Streams for Natural Flood Management." In Cardiff University Engineering Research Conference 2023. Cardiff University Press, 2024. http://dx.doi.org/10.18573/conf1.r.

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With concerns about climate change, nature-based solutions for flood risk management have been increasing in popularity across Europe, and targeting headwater streams can be an effective approach by increasing forest floodplains through inundation of surrounding areas. However, accurately measuring stream discharge remains a challenge. One promising method is to measure the surface velocity and apply a surface velocity coefficient. This study investigates the determination of surface velocity coefficient in headwater streams using the float and current meter methods. The relationship between s

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Liu, Jing, Longfei Xiao, and Fengmei Jing. "CFD-Based Study of a Tidal Current Turbine in a Horizontal Axis Under Regular Waves." In ASME 2019 38th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/omae2019-95231.

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Abstract The horizontal-axis tidal current turbine is often installed in near-surface to use the high flow velocity of tidal current, and many designers have found the effect of wave on the hydrodynamic performance of tidal current turbine. The present study focuses on the hydrodynamic analysis of a tidal current turbine in a horizontal axis under the condition of regular waves, based on CFD method. The experimental data are used to verify the feasibility of the method. A non-dimensional parameter k is defined as the ratio of tip submergence to wave amplitude. It is shown that the numerical me

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Cao, Pengjiu, Xiaxin Cao, Zhongning Sun, Ming Ding, Na Li, and Haisha He. "An Experimental Study on Open Natural Circulation Flow Characteristics by Air Injection." In 2017 25th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/icone25-66692.

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An open natural circulation system has the characteristics of a simple structure, superior safety performance and strong heat removal capability. However, during long-term operation, the flow instability may occur due to the reduction of the driving force, which will have adverse effects on the heat removal capability and safe operation of the system. Thus, injecting air into the riser is designed in this paper to improve the driving force of the circulation flow, reduce the possibility of flow instability, and increase the heat removal capability. In order to investigate the influence of air

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Satheesh, Sukruth, Clément Haëck, and Francisco J. Huera-Huarte. "Effect of the Free Surface on the Drag Forces on a Flat Plate Translating Normal to the Flow." In ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/omae2018-77646.

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A series of experiments were carried out with a flat plate towed normal to the flow in quiescent fluid. The focus was given to the analysis of the drag force seen by the plate as a function of its aspect ratio and hydraulic diameter. The effect of towing the plate near the water free surface was also investigated thoroughly. Plates of aspect ratio ranging from 0.25 to 4 were towed in a still water tank at different Reynolds numbers in the range from 15000 to 60000. Submergence depth was measured from the upper edge to the free surface and varied from zero to the centre of the tank. Forces on t

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Pernod, Laetitia, Matthieu Sacher, Jeroen Wackers, Benoit Augier, and Patrick Bot. "Free-Surface Effects on Two-Dimensional Hydrofoils by RANS-VOF Simulations." In SNAME 24th Chesapeake Sailing Yacht Symposium. SNAME, 2022. http://dx.doi.org/10.5957/csys-2022-012.

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Foiling yachts and crafts are both very sensitive to the flying height in terms of stability and performance, raising the scientific issue of the influence of the free-surface when the foil is at low submergence. This work presents numerical simulations of a 2D hydrofoil section NACA0012 at 5° angle of attack in the vicinity of the free surface, for different values of the submergence depth, for a chord-based Froude number of 0.571 and a Reynolds number of 159,000. URANS equations are solved with a mixture model to capture the free surface, and using an automatic grid refinement. Verification

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Barannyk, Oleksandr, Brad Buckham, and Peter Oshkai. "Effect of Chordwise Flexibility and Depth of Submergence on an Oscillating Plate Underwater Propulsion System." In ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting collocated with 8th International Conference on Nanochannels, Microchannels, and Minichannels. ASMEDC, 2010. http://dx.doi.org/10.1115/fedsm-icnmm2010-30148.

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This work was dedicated to the experimental study of oscillating plate propulsors undergoing a combination of heave translation and pitch rotation. The oscillation kinematics are inspired by swimming mechanisms employed by fish and other marine animals. The primary focus was on the propulsive characteristics of such oscillating plates, which were studied by means of direct force measurements in the thrust-producing regime. Experiments were performed at constant Reynolds number and constant heave amplitude. By varying the Strouhal number, the depth of submergence and the chordwise flexibility o

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Westerkamp, Diederik, Andriarimina Daniel Rakotonirina, Bruno Sainte-Rose, and Ton van den Bremer. "Numerical Simulation of the Wave-Induced Drift of Disc-Shaped Floating Plastic Debris." In ASME 2023 42nd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2023. http://dx.doi.org/10.1115/omae2023-103606.

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Abstract Floating plastic debris poses a significant threat to the health of the world’s oceans and ecosystems. Understanding the pathways of floating marine litter is crucial in designing effective solutions to mitigate this problem. The Ocean Cleanup aims to build simple but reliable numerical models to better predict plastic accumulation zones. In this context, a Lagrangian point-particle model has been developed that can help better understand wave-induced drift. The continuous and the discrete phase are coupled in a one-way fashion using a micro-scale Euler-Lagrange approach. The Maxey-Ri

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