The effects of step inclination and air injection on the water flow in a stepped spillway:A numerical study

作     者：Khadidja Kherbache Xavier Chesneau Belkacem Zeghmati Stéphane Abide Saadia Benmamar 

作者机构：Universite de Perpignan Via Domitia(UPVD)LAhoratoire the Mathematiques et de PhySique(LAMPS)EA4217F-66860PerpignanFrance Ecole Nationale PolytechniqueLaboratoire de Recherche des Sciences de I'eau10 Avenue Hassen Badi16000 AlgerAlgerie 

出 版 物：《Journal of Hydrodynamics》 (水动力学研究与进展B辑（英文版）)

年 卷 期：2017年第29卷第2期

页      面：322-331页

核心收录：

学科分类：080704[工学-流体机械及工程] 080103[工学-流体力学] 08[工学] 0807[工学-动力工程及工程热物理] 0801[工学-力学（可授工学、理学学位）] 

基　　金：the ERASMUS MUNDUS AVERROES Program for the financial support off this study 

主　　题：Stepped spillway turbulence air-water air injection volume of fluid (VOF) method multiphasic method 

摘      要：In this work, we perform a numerical study of a water flow over a stepped spillway. This flow is described by the Reynolds averaged Navier-Stokes equation （RANS） associated with the turbulence k - model. These equations are solved using a commercial software based on the finite volume scheme and an unstructured mesh. The air-water flow was modeled using volume of fluid （VOF） and multiphasic methods. The characteristics of the profile, etc.. We analyze the effects on the flow structure of the flow were investigated including the total pressure, the velocity steps and countermarch inclination, the air injection through the countermarch into the water flow and the dynamics water discharges. Results show that the inclination of the countermarch relative to the vertical and the air injection into the water flow increase the total pressure in the neighbourhood of the steps.