波浪形底板消力池自由水跃水力特性数值模拟

doi:10.16182/j.issn1004731x.joss.201704029

系统仿真学报 ›› 2017, Vol. 29 ›› Issue (4): 918-925.doi: 10.16182/j.issn1004731x.joss.201704029

波浪形底板消力池自由水跃水力特性数值模拟

魏文礼, 洪云飞, 刘玉玲

西安理工大学陕西省西北旱区生态水利工程重点实验室,西安 710048

收稿日期:2015-07-13 修回日期:2015-10-13 出版日期:2017-04-08 发布日期:2020-06-03
作者简介:魏文礼(1965-),男,陕西大荔,博士,教授,研究方向为环境水力学、水污染控制理论与技术。
基金资助:
国家自然科学基金(51578452, 51178391),陕西省科学研究计划(2014K15-03-05),陕西省教育厅重点实验室科学研究计划(15JS063)

Numerical Simulation on Hydraulic Characteristics of Free Hydraulic Jump on Corrugated Beds of Stilling Basin

Wei Wenli, Hong Yunfei, Liu Yuling

State Key Laboratory of Eco-Hydraulic Engineering in Shaanxi, Xi'an University of Technology, Xi'an 710048, China

Received:2015-07-13 Revised:2015-10-13 Online:2017-04-08 Published:2020-06-03

摘要/Abstract

摘要： 采用VOF(Volume of Fluid)方法追踪自由液面,辅以RNG(重正化群) k–ε 湍流模型封闭两相流时均方程,对9种工况波浪形底板消力池自由水跃的水力特性进行数值模拟。研究发现：波浪形底板表面附近有漩涡产生,沿顺时针方向旋转;波浪形底板上压强呈波浪状分布,相邻波峰和波谷的差值在水跃区沿程减小;在闸孔开度和底板粗糙度相同时,波浪形底板消力池的自由水跃长度和消能率随进口断面弗劳德数增加而增大。

关键词: 波浪形底板, 消力池, 数值模拟, 效能率

Abstract: The VOF (volume of fluid) method was applied to track the free water surface, and the RNG k–ε turbulent model was used to close the two-phase flow time-averaged equations. The conditions properties of free hydraulic jumps on corrugated beds with a stilling basin under 9 kinds of conditions were studied by numerical simulation. Simulation research results show: There are vortexes generated by corrugated beds surfaces, rotating in the clockwise direction. The pressure distribution on corrugated beds in hydraulic jump region appears a wavy change, and the difference between the pressure values at adjacent crest and trough gradually decreases along main flowing direction. With the same the gate opening and bottom roughness, the length of hydraulic jump and the efficiency rate of energy dissipation increase with Froude number increasing at the inlet section of the stilling pool with corrugated beds.

Key words: Corrugated bed, stilling basin, numerical simulation, energy dissipation rate

中图分类号:

TP391.1

魏文礼, 洪云飞, 刘玉玲. 波浪形底板消力池自由水跃水力特性数值模拟[J]. 系统仿真学报, 2017, 29(4): 918-925.

Wei Wenli, Hong Yunfei, Liu Yuling. Numerical Simulation on Hydraulic Characteristics of Free Hydraulic Jump on Corrugated Beds of Stilling Basin[J]. Journal of System Simulation, 2017, 29(4): 918-925.

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波浪形底板消力池自由水跃水力特性数值模拟

Numerical Simulation on Hydraulic Characteristics of Free Hydraulic Jump on Corrugated Beds of Stilling Basin

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