Gotowe bibliografie tematyczne / Keywords- Open channel flow parameters

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Gotowa bibliografia na temat „Keywords- Open channel flow parameters”

Autor: Grafiati

Data publikacji: 3 czerwca 2025

Data aktualizacji: 31 lipca 2025

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Artykuły w czasopismach na temat "Keywords- Open channel flow parameters"

Ebissa, G. K. Dr. K. S. Hari Prasad. "Estimation of open channel flow parameters by using optimization techniques." INTERNATIONAL JOURNAL OF ENGINEERING DEVELOPMENT AND RESEARCH Volume 5 | Issue 2 | May 2017, Volume 5 | Issue 2 | May 2017 (2017): Page Number(s) — 1049–1073. https://doi.org/10.5281/zenodo.583720.

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Open channel flow parameter estimation is an inverse problem, which involves the prediction of a function within a domain, given an error criterion with respect to a set of observed data. Various numerical methods have been developed to estimate open channel flow parameters. For this study, Genetic Algorithm optimization technique is selected. Because of its inherent characteristics, Genetic Algorithm optimization technique avoids the subjectivity, long computation time and ill-posedness often associated with conventional optimization techniques. The present study involves estimation of open c

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Lakshmanan, Susithra, Gareth Pender, Heather Haynes, and William Holmes. "Characterization of flow transport within pore spaces of an open-work gravel bed." International Journal of Engineering & Technology 3, no. 4 (2014): 457. http://dx.doi.org/10.14419/ijet.v3i4.3430.

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Analysis of the flow dynamics within the near-bed and sub-surface regions of river bed sediment is critical in understanding fluid exchange and related chemical transfer/reactions. The knowledge in above is limited as these regions are difficult to measure using traditional instrumentation methods. In this paper, we tried the use of Magnetic Resonance Imaging (MRI) technique to non-invasively image flow dynamics of simulated river bed. We developed a bespoke MRI-compatible open-channel flume in order to acquire real-time flow images from within the MRI bore and used contrast agent (Gd-DTPA) as

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Beldring, S., K. Engeland, L. A. Roald, N. R. Sælthun, and A. Voksø. "Estimation of parameters in a distributed precipitation-runoff model for Norway." Hydrology and Earth System Sciences 7, no. 3 (2003): 304–16. http://dx.doi.org/10.5194/hess-7-304-2003.

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Abstract. A distributed version of the HBV-model using 1 km2 grid cells and daily time step was used to simulate runoff from the entire land surface of Norway for the period 1961-1990. The model was sensitive to changes in small scale properties of the land surface and the climatic input data, through explicit representation of differences between model elements, and by implicit consideration of sub-grid variations in moisture status. A geographically transferable set of model parameters was determined by a multi-criteria calibration strategy, which simultaneously minimised the residuals betwe

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Oleynyk, O., Yu Otrosh, N. RASHKEVICH, and S. Shapoval. "SIMULATION OF A POSSIBLE SMOKING ZONE IN A DESTROYED SHELTER." Municipal economy of cities 4, no. 178 (2023): 210–18. http://dx.doi.org/10.33042/2522-1809-2023-4-178-210-218.

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The purpose of the presented work is to create a model for calculating the process of the spread of dangerous fire factors and determining the effectiveness of various engineering and technical, organizational measures and means aimed at increasing the duration of people's stay in a civil defense building in the conditions of hostilities. The authors of the work conducted an analysis of scientific research in areas such as "Modeling of fire and analysis of smoke propagation at metro stations in different fire locations" and "Modeling of flame and smoke propagation in an underground garage unde

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Abida, Habib. "Identification of compound channel flow parameters." Journal of Hydrology and Hydromechanics 57, no. 3 (2009): 172–81. http://dx.doi.org/10.2478/v10098-009-0016-y.

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Identification of compound channel flow parametersOptimization methods are used to estimate parameters required for routing floods through open compound channels. Besides initial and boundary flow conditions, data required especially include, cross-sectional area (A) of flow and conveyance (K) as functions of flow depth (y) for a representative cross-section of the study reach. Thus, instead of optimizing upon channel's geometric and hydraulic parameters, optimization is performed upon non-physical parameters in assumedA(y) andK(y) relationships. The optimization method selected for this appli

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HIRANO, Muneo, Haruyuki HASHIMOTO, Akira FUKUTOMI, Kouji TAGUMA, and Muh Saleh PALLU. "Nondimensional Parameters Governing Hyperconcentrated Flow in a Open Channel." PROCEEDINGS OF HYDRAULIC ENGINEERING 36 (1992): 221–26. http://dx.doi.org/10.2208/prohe.36.221.

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Gadissa, Ebissa, and Asirat Teshome. "Estimation of Open Channel Flow Parameters by Using Genetic Algorithm." Open Journal of Optimization 07, no. 03 (2018): 51–64. http://dx.doi.org/10.4236/ojop.2018.73003.

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Venherskyi, Petro, and Yaryna Kokovska. "INVESTIGATION OF THE STABILITY FOR ESTABLISHED FLOWS IN OPEN PSEUDOPRISMATIC CHANNELS." EUREKA: Physics and Engineering 5 (September 30, 2016): 9–15. http://dx.doi.org/10.21303/2461-4262.2016.00151.

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In this article the equations of channel flow of fluid are considered. They are described by the continuity equation and the momentum equation depending on the rate of flow and cross-sectional area of flow. It is shown that natural phenomena significantly affect the flow stability and received a condition that ensures the stability of unstated flow at perturbation in initial and boundary conditions. Conditions of stability are checked on test examples, which depend on the following parameters: established movement parameters and middle and bottom slope angles. It is shown that in such assumpti

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Deng, Zhijun, Baozhu Li, Shuang Xing, Chen Zhao, and Haijiang Wang. "Experimental Investigation on the Anode Flow Field Design for an Air-Cooled Open-Cathode Proton Exchange Membrane Fuel Cell." Membranes 12, no. 11 (2022): 1069. http://dx.doi.org/10.3390/membranes12111069.

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A flow channel structure design plays a significant role in an open-cathode proton exchange membrane fuel cell. The cell performance is sensitive to the structural parameters of the flow field, which mainly affects the heat and mass transfer between membrane electrode assembly and channel. This paper presents theoretical and experimental studies to investigate the impacts of anode flow field parameters (numbers of the serpentine channels, depths, and widths of the anode channel) on cell performance and temperature characteristics. The result indicates that the number of anode serpentine channe

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Gubashi, Karim R. "Using Hydraulic Parameters to Estimate Longitudinal Dispersion Coefficient in Open Channel." Tikrit Journal of Engineering Sciences 16, no. 1 (2009): 42–62. http://dx.doi.org/10.25130/tjes.16.1.04.

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A comparative analysis of previous theoretical and empirical equations is applied to evaluate their behavior in predicting dispersion coefficient in open channel. A new simplified method for predicting dispersion coefficients using hydraulic parameters is developed. A nonlinear multiple regression method is prepared to derive a new equation of dispersion coefficient. This equation is proven to be superior in explaining dispersion coefficient of open channel more precisely, as compared to existing equations. Keywords: Longitudinal dispersion, hydraulic parameters, dispersion coefficients.

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Rozprawy doktorskie na temat "Keywords- Open channel flow parameters"

Khatibi, Rahman Haghi. "Mathematical open channel flow models and identification of their friction parameters." Thesis, University of London, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.263145.

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This thesis l concerned with the mathematical modelling of open channel flows governed by the Saint-Venant equations, which are used as a prediction or identification tools. A survey of the literature in these fields identified the problems in need of Immediate research. Numerical test runs were then devised which led to projecting a clear picture as follows. The performance of twn widely used Implicit finite difference schemes, the 4-point box and 6-point staggered schemes were compared In a wide range of circumstances. it is concluded that both schemes produce 'very close results, but the st

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Części książek na temat "Keywords- Open channel flow parameters"

Xu, Jinchao, Xiaodong Wang, Long Zhu, Donghui Zhou, and Jun Zhao. "Study on Air Bubble Plume in Open Channel with CFD-PBM Coupling Model." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-6138-0_110.

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AbstractAir bubble plume flow has been applied widely in the dredging, ice breaking, and pollution control at navigation projects. But the interaction regimes among bubbles or between bubbles and water are not quite clear. Especially in open channels, the bubble plume flow are significantly affected by the separation phenomenon which is caused by the cross flow velocity. According to the existing research, the interaction force of gas-liquid and the distribution of bubble size are the key parameters to simulate the hydrodynamic characteristics of bubble plume flow. In order to explore the mech

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Eiff, O., E. Florens, and F. Moulin. "Roughness parameters in shallow open-channel flows." In River Flow 2014. CRC Press, 2014. http://dx.doi.org/10.1201/b17133-44.

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Usman, Muhammad, Abdul Haseeb, Muhammad Kashan, Nadir Murtaza, and Ghufran Ahmed Pasha. "Investigation of Flow Characteristics Through Emergent Mixed Vegetation Pattern." In Advances in Transdisciplinary Engineering. IOS Press, 2024. https://doi.org/10.3233/atde241062.

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Emergent vegetation has a significant contribution to resist flow in an open channel. Therefore, the current investigation aims to explore the influence of mixed vegetation patterns (MVP) on various flow characteristics. The current investigation was conducted in a flume to explore the influence of the MVP on flow characteristics under sub-critical flow conditions. An MVP comprising a combination of shorter and taller vegetation elements has been introduced in a flume to investigate parameters such as vertical velocity distribution, and energy dissipation under various values of the Froude num

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Volk, Liubov, Pavlo Volk, and Anatoliy Rokochinskiy. "Scientific Principles of Improving the Methodology of Calculating Drainage Systems in Current Climatic Conditions." In Advances in Environmental Engineering and Green Technologies. IGI Global, 2024. http://dx.doi.org/10.4018/979-8-3693-5693-7.ch018.

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The existence and structure of the hierarchical and hydraulic relationship between the parameters of soil flow movement, the parameters of the closed collector-drainage network, and the parameters of channels and structures of drainage systems based on the application of the system methodology were determined. A physical model, a structural model, a mathematical model, and a hydraulic model of the drainage system were developed. By using these models, the principles of determining the parameters of the hydraulic characteristics of drainage or water supply (discharge, pressure, velocity, etc.)

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Benham, Robert, Fayyaz Rehman, and Adesh Joshi. "An Investigation into the Exploratory Use of Additive Manufacturing in Drum Gate Design for Open Channel Flow." In Advances in Transdisciplinary Engineering. IOS Press, 2023. http://dx.doi.org/10.3233/atde230900.

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Additive Manufacturing (AM) offers itself as a valuable tool for exploring a range of possibilities through design and development of complex shapes in fluid flow research. itself as a valuable tool for exploring. In this research, the limitations of existing components in a 2.5 m open channel fluid flow experiment, which are characterized by their standard basic shapes, are examined. Specifically, this research focuses on investigating flow control in hydraulic systems by introducing gates with more intricate geometries. However, these complex design shapes are typically expensive and time-co

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Sangeeta, Ms, and Rashmi Yadav. "SOFTWARE MODELLING OF EXPERIMENTALLY MEASURED PARSHALL FLUMES FOR EVALUATING AERATION PERFORMANCE." In Futuristic Trends in Agriculture Engineering & Food Sciences Volume 3 Book 15. Iterative International Publisher, Selfypage Developers Pvt Ltd, 2024. http://dx.doi.org/10.58532/v3bcag15p2ch4.

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The Parshall flume was designed primarily to monitor the discharge rate in various irrigation channels, dam discharge, municipal sewer flow rate, industrial wastewater discharge, and many other applications, such as indirect measurement of landfill leachate, whereas its secondary use is to aid in increasing the amount of oxygen in a channel. Aeration is the process through which oxygen is exchanged between water and air. A Parshall flume was designed with a converging part, a diverging outflow, and a flat floor, known as a throat with upward slope sections and a downward sloping floor. The mai

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Streszczenia konferencji na temat "Keywords- Open channel flow parameters"

Augusto Goulart Diniz, Hélio, Lúcio Sant'Anna Purri Miranda, Ivo Zatti Lima Meyer, Luiz Henrique Ramos de Oliveira, and Jorge Luis Zegarra Tarqui. "EXPERIMENTAL INVESTIGATION OF PARAMETERS THAT CHARACTERIZE OPEN-CHANNEL FLOW." In 18th Brazilian Congress of Thermal Sciences and Engineering. ABCM, 2020. http://dx.doi.org/10.26678/abcm.encit2020.cit20-0257.

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Shah, M. K., and M. F. Tachie. "PIV Investigation of an Open Channel Flow Over a Forward Facing Step." In ASME/JSME 2007 5th Joint Fluids Engineering Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/fedsm2007-37593.

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The characteristics of an open channel turbulent flow over a forward facing step (FFS) are investigated in the present study. Two step heights, h = 6 and 9 mm, at Reynolds number, Reh, (based on the approach freestream velocity, U0, and step height, h) of 1900 and 2800 respectively were studied. Particle image velocimetry technique (PIV) was used to obtain detailed velocity measurements upstream of the FFS, in the reattachment region (x/h = 0, 1, 2) and in the redevelopment region (x/h = 4, 10, 15 and 50). The boundary layer integral parameters, mean velocity profiles and Reynolds stresses obt

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Cadirci, Sertac, and Hasan Gunes. "Active Flow Control With an Oscillating Backward Facing Step in a Shallow Open Channel." In ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-86316.

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An oscillatory, zero-net-mass flux actuator system, Jet and Vortex Actuator (JaVA), is implemented on the step wall of a backward facing step. JaVA can energize the boundary layer by creating jets or vortices thus it may delay flow separation when used properly. The main part of JaVA is a rectangular cavity with a moving actuator plate. The actuator plate is mounted asymmetrically inside the cavity of the JaVA box, such that there are one narrow and one wide gap between the plate and the box. The main governing parameters are the actuator plate’s width (b), the amplitude (a) and the operating

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Klatte, Joerg, Mark M. Weislogel, and Michael Dreyer. "Flow Rate Limits in Surface Tension Dominated Open Channel Flows: An Efficient Design Tool." In ASME 2008 6th International Conference on Nanochannels, Microchannels, and Minichannels. ASMEDC, 2008. http://dx.doi.org/10.1115/icnmm2008-62137.

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In the present study a forced liquid flow through an open capillary channel is investigated. Due to the interplay between inertial and viscous forces the pressure along the flow path decreases causing the free surface to bend inwards the open channel. Because the curvature of the free surface is in turn dependent on the channel pressure a maximum flow rate is achieved beyond which the free surface collapses and gas ingestion occurs. This critical flow rate depends intricately on the channel geometry and liquid properties. A new numerical method has been developed to predict the pressure, free

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Xu, Weigang, Huayong Zhang, Yu Jing, Zhongyu Wang, Changming Ji, and Hua Zhang. "A Study on Manning’s Coefficient of Rigid Unsubmerged Vegetation Under Open Channel Constant Gradual Flow Condition." In ASME 2010 International Mechanical Engineering Congress and Exposition. ASMEDC, 2010. http://dx.doi.org/10.1115/imece2010-40786.

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A series of experiments were carried out to study the hydraulic resistance of rigid unsubmerged vegetation in open constant gradual channel flow. Flow depth and velocity were measured in the density of 54, 108 and 202 reed stems per square meter within a range of discharge values. The results demonstrated that the back-up water height increases with the reed density, while the velocities show an opposite trend. The phenomenon can be explained by the relationship between Manning coefficient and the vegetation density parameters.

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Haidl, J., Z. Chára, and V. Matoušek. "Experimental Validation of Granular Flow Kinetic Theory Under Turbulent Flow Conditions." In Topical Problems of Fluid Mechanics 2022. Institute of Thermomechanics of the Czech Academy of Sciences, 2022. http://dx.doi.org/10.14311/tpfm.2022.011.

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The mixed classical and extended kinetic theory of granular flows is used for modeling the characteristics of particles-water turbulent sheet flow. The open-source solver sedFoam v3.1 is used for the 1-D and 2-D flow simulations. The simulation results are compared to the experimental data measured in the open channel. After that, the simulation parameters are optimized to achieve the best possible agreement between the simulation and the experimental results. The unsatisfactory performance of the KT models and the observed simulation instabilities are discussed.

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Nyantekyi-Kwakye, B., E. E. Essel, S. Clark, and M. F. Tachie. "Experimental Study of Shallow Open Channel Turbulent Flows Over Rough Walls." In ASME 2014 4th Joint US-European Fluids Engineering Division Summer Meeting collocated with the ASME 2014 12th International Conference on Nanochannels, Microchannels, and Minichannels. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/fedsm2014-21559.

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An experimental study was undertaken to investigate the effects of bed roughness on the turbulence characteristics of shallow open channel flows. The measurements were performed in a recirculating open channel flow over a reference smooth bed and a three-dimensional rough bed (36-grit sandpaper). The velocity measurements were conducted using a high resolution particle image velocimetry (PIV) system. The Reynolds number based on the depth of flow (h) and freestream velocity (Ue) varied from 21000 to 30000 and the Froude number ranged from 0.46 to 0.65. Two smooth bed experiments were conducted

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Elliott, Novak S. J., Anthony D. Lucey, and Matthias Heil. "Large-Amplitude Oscillations of a Finite-Thickness Cantilevered Flexible Plate in Viscous Channel Flow." 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-icnmm2010-30438.

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The broad aim of the present work is to elucidate mechanisms of obstructive breathing disorders (snoring, sleep apnea) in which flow-induced instabilities of the soft palate feature. We use the well-established analogue system model wherein a two-dimensional flexible plate (soft palate) is mounted downstream of a rigid surface that separates upper and lower plane channel (oral and nasal tracts) flows that interact with the plate motion and then combine into a single plane channel (pharynx) flow. For this system, we take the next step towards biomechanical realism by modeling finite-amplitude m

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Ka¨rrholm, F. Peng, Henry Weller, and Niklas Nordin. "Modelling Injector Flow Including Cavitation Effects for Diesel Applications." In ASME/JSME 2007 5th Joint Fluids Engineering Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/fedsm2007-37518.

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In this paper, cavitation and pressure parameters measured in a model diesel injector are compared to data acquired by numerical simulations using a new code developed for the Open-FOAM platform, which uses a barotropic equation of state together with the homogeneous equilibrium assumption. It is a viscid code, allowing both compressible liquid and vapour to be modelled. The mass flow and cavitation probabilities obtained from the simulations are compared to data obtained in experiments performed at AVL’s laboratories, in which the flow through an almost two-dimensional nozzle was examined. Th

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Tariq, Andallib, and P. K. Panigrahi. "Heat Transfer and Flow Characteristics of a Rib With a Slit." In ASME 2003 International Mechanical Engineering Congress and Exposition. ASMEDC, 2003. http://dx.doi.org/10.1115/imece2003-41352.

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The present investigation is an experimental study of convective heat transfer in the entrance region of a rectangular channel with a single surface mounted slit rib. The open area ratios of the slit rib set during the experiment are equal to 10, 20, 30, 40 and 50%. Hotwire anemometry (HWA) and resistance thermometry (RTD) have been used for velocity and temperature measurement respectively. Both mean and turbulent statistics of the velocity and temperature fluctuations have been reported. Smoke visualization has also been carried out to obtain a qualitative picture of the flow field behind th

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