Validation of a 3D RANS model to predict flow and stratification effects related to fish passage at hydropower dams

Haque, Md. Manjurul; Constantinescu, George; Weber, Larry

doi:10.1080/00221686.2007.9521816

Cited by 9 publications

(2 citation statements)

References 4 publications

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“…Extensive measurements of instantaneous velocities with a 2D particle image velocimetry (PIV) system and acoustic Doppler velocimetry (ADV) were performed, postprocessed, and used to assess the numerical model accuracy. Haque et al [44] referred to the problems that, in most cases, the experimental data sets, available for numerical models' validation, have high measurement errors, and/or the measurement meshes are too coarse to be able to correctly assess the predictive capabilities of these models. Blocken and Gualtieri [23] mention that verification and validation studies are indispensable and high-quality experiments are needed to supply data to validate CFD studies.…”

Section: Introductionmentioning

confidence: 99%

Modelling of Pool-Type Fishways Flows: Efficiency and Scale Effects Assessment

Quaresma

Pinheiro

2021

Water

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In this study, the 3D numerical modelling of flow in a pool-type fishway with bottom orifices was performed using computational fluid dynamics (CFD) software (FLOW-3D®). Numerical results were compared with experimental data obtained from acoustic Doppler velocimetry (ADV) and particle image velocimetry (PIV) measurements. Several hydrodynamic variables that influence fishways efficiencies, such as flow depths, flow patterns, water velocity, turbulent kinetic energy, Reynolds normal stresses, and Reynolds shear stress parallel to the bottom component, were qualitatively and quantitatively compared. The numerical model accurately reproduced the complex flow field, showing an overall good agreement between the numerical model predictions and the experimental data for the analysed variables. The importance of performing a numerical model validation for all the parameters under analyses was highlighted. Additionally, scaling effects were analysed by running an upscaled numerical model of the prototype fishway. The model performed with similar accuracy for both physical model and prototype dimensions with no evidence of scale effects. The present study concludes that CFD models (namely FLOW-3D®) may be used as an adequate and efficient design and analysis tool for new pool-type fishways geometries, reducing and complementing physical model testing.

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Section: Introductionmentioning

confidence: 99%

Modelling of Pool-Type Fishways Flows: Efficiency and Scale Effects Assessment

Quaresma

Pinheiro

2021

Water

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“…The continuity equation is satisfied using the SIMPLE pressure-velocity algorithm. An additional scalar transport equation is solved to account for temperature effects through the Boussinesq assumption (M. Haque et al, 2007). The boundary conditions are programmed through user-defined functions.…”

Section: Mathematical Modellingmentioning

confidence: 99%

Effect of the Elevation of Old Dam Gap on Water Temperature Discharged for Fengman Rebuilt Project

Zheng¹,

Sun²,

Liu³

et al. 2016

Proceedings of the 2016 4th International Conference on Mechanical Materials and Manufacturing Engineering

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A full three-dimensional flow-temperature coupled mathematics model was established combined with Fengman station. At the same time, a physical model test was carried out. Based on the research for different elevations with 235.0~244.0m on water temperature discharged, it is pointed that the elevation of old dam gap has rare influence on the temperature in the winter; however, the influence becomes larger in the summer. The results also show that the elevation of old dam gap with 237.5~244.0m all could improve the temperature requirements for Fengman Rebuilt Project.

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