Applications of Computational Fluid Dynamics to Flow Ratings at Prototype Spillways and Weirs. I: Data Generation and Validation
| Autor: | Matahel Ansar, Liqiong Zhang, Jie Zeng, Emile Damisse, Juan A. González-Castro |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Spillway
Engineering Test data generation Turbulence business.industry 0208 environmental biotechnology 02 engineering and technology Mechanics Computational fluid dynamics 01 natural sciences Agricultural and Biological Sciences (miscellaneous) 010305 fluids & plasmas 020801 environmental engineering Physics::Fluid Dynamics Flow (mathematics) Closure (computer programming) 0103 physical sciences Volume of fluid method Boundary value problem business Simulation Water Science and Technology Civil and Structural Engineering |
| Zdroj: | Journal of Irrigation and Drainage Engineering. 143 |
| ISSN: | 1943-4774 0733-9437 |
| DOI: | 10.1061/(asce)ir.1943-4774.0001112 |
| Popis: | Accurate flow ratings at water-control structures are essential for water-resource management. This paper presents an approach to obtain numerically generated data using computational fluid dynamics (CFD) to complement field measurements needed to improve spillway flow-rating formulas. The procedure to generate CFD flow data described herein is based on solving Reynolds-Averaged Navier-Stokes equations using the κ-e turbulence closure model with the free surface resolved by the volume of fluid (VOF) method. The steps for setting the computational domain, generating the mesh, selecting the boundary conditions, and choosing a convergence criteria for the simulations are discussed. The turbulence closure model and VOF method for the present application are verified with data from laboratory measurements of submerged jet flow below a gate and in a sharp open-channel bend. CFD flow data generation is validated with laboratory and field measurements for gated ogee spillways in south Florida. The results... |
| Databáze: | OpenAIRE |
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