Journal ArticleDOI
Flow over ogee spillway : Physical and numerical model case study
TLDR
In this paper, the authors compare flow parameters over a standard ogee-crested spillway using a physical model, numerical model, and existing literature, and show that there is reasonably good agreement between the physical and numerical models for both pressures and discharges.Abstract:
A study was completed to compare flow parameters over a standard ogee-crested spillway using a physical model, numerical model, and existing literature. The physical model was constructed of Plexiglas and placed in a test flume. Pressure taps were installed along the entire length of the spillway. Discharge and pressure data were recorded for 10 different flow conditions. A commercially available computational fluid dynamics (CFD) program, which solves the Reynolds-averaged Navier-Stokes equations, was used to model the physical model setup. Data interpolated from U.S. Bureau of Reclamation and U.S. Army Corps of Engineers design nomographs provided discharge and pressure data from the literature. Nondimensional discharge curves are used to compare the results from the different methods. Pressures are compared at low, mid, and high flow conditions. It is shown that there is reasonably good agreement between the physical and numerical models for both pressures and discharges. The availability and power of existing numerical methods provides engineers with another tool in the design and analysis of ogee spillways.read more
Citations
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Journal ArticleDOI
Laboratory measurements and multi-block numerical simulations of the mean flow and turbulence in the non-aerated skimming flow region of steep stepped spillways
TL;DR: In this paper, the results of a comprehensive study addressing the non-aerated region of skimming flow in steep stepped spillways are presented and discuss the importance of this region in small dams and/or spillways with high specific discharges.
Journal ArticleDOI
Computational simulation of flow over stepped spillways
TL;DR: In this article, the finite element computational fluid dynamics module of the ADINA software was used to predict the main characteristics of the flow, including determination of the water surface, the development of skimming flow over corner vortices, and the determination of energy dissipation.
Journal ArticleDOI
Physical and Numerical Comparison of Flow over Ogee Spillway in the Presence of Tailwater
TL;DR: In this article, the authors compared the results obtained from two ogee-crested spillways with and without the effect of tailwater and showed that numerical modeling can accurately predict the rate of flow over the spillway and the pressure distribution.
Journal ArticleDOI
Errors in Acoustic Doppler Profiler Velocity Measurements Caused by Flow Disturbance
David S. Mueller,Jorge D. Abad,Carlos M. García,Jeffery W. Gartner,Marcelo H. Garcia,Kevin A. Oberg +5 more
TL;DR: In this article, a state-of-the-art three-dimensional computational fluid dynamic model is validated with and used to complement field and laboratory observations of flow disturbance and its effect on measured velocities.
Journal ArticleDOI
Experimental Study and 3D Numerical Simulations for a Free-Overflow Spillway
TL;DR: In this article, the authors investigate the flow field over a spillway and to simulate the flow by means of a 3D numerical model, where the velocity profile in the boundary layer along the spillway is described by a velocity-defect relationship.
References
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