Numerical flow model stepped spillways in order to maximize energy dissipation using FLUENT software
نویسندگان
چکیده
منابع مشابه
Energy Dissipation and Residual Energy on Embankment Dam Stepped Spillways
Stepped spillways are designed to increase the rate of energy dissipation on the chute and to reduce the size of the downstream energy dissipator. It is essential to predict accurately the turbulent dissipation above the steps for large discharges per unit width corresponding to the skimming flow regime. New measurements were conducted in a large facility with a channel slope of 21.8o and a ste...
متن کاملnew approach for estimating of energy dissipation over stepped spillways
hydraulics of stepped spillway is a very complicated phenomenon, as it consists of a two phase flow passing through a set of designed steps. the steps increase the rate of energy dissipation taking place on the spillway face. turbulence, flow aeration and energy dissipation are the main tasks in the design of such structures. this study consists of the experimental investigation to determine th...
متن کاملFlow aeration, cavity processes and energy dissipation on flat and pooled stepped spillways for embankments
The design floods of several reservoirs were recently re-evaluated and the revised spillway outflow could result in dam overtopping with catastrophic consequences for some embankment structures. Herein a physical study was performed on flat and pooled stepped spillways with a slope typical of embankments (θ = 26.6◦) and four stepped configurations were tested: a stepped spillway with flat horiz...
متن کاملEffects of Step Pool Porosity upon Flow Aeration and Energy Dissipation on Pooled Stepped Spillways
The hydraulics of stepped spillways with flat steps has been studied for the last three decades, including for embankment dam slopes, but studies of alternative stepped designs are limited. In this study, a pooled stepped spillway was investigated in a relatively large-size facility, and three different pool wall porosities were tested. The flow patterns, the macroand microscopic air-water flow...
متن کاملInfluence of Slope and the Number of Steps on Energy Dissipation in Stepped Spillway Using Numerical Model
Recently the stepped spillways have been used as an appropriate solution for energy dissipation. In the present study, Siahbisheh dam spillway is simulated by using Computational Fluid Dynamic (CFD), in which the Mixture method and Reynolds Stresses Model (RSM) turbulence model is used. In the first modeling series the over all steppes slope is constant. The number of the steps is increased to ...
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ژورنال
عنوان ژورنال: IOSR Journal of Engineering
سال: 2014
ISSN: 2278-8719,2250-3021
DOI: 10.9790/3021-04651725