波浪形底板消力池自由水跃水力特性数值模拟

发布时间：2018-04-04 19:59

  本文选题：波浪形底板　切入点：消力池　出处：《系统仿真学报》2017年04期

【摘要】：采用VOF(Volume of Fluid)方法追踪自由液面,辅以RNG(重正化群)k-?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。
[Abstract]:A VOF(Volume of fluid method was used to trace the free liquid surface, supplemented by RNG (renormalization group).In the turbulent model, the hydraulic characteristics of the free hydraulic jump of the wavy bottom stilling tank under nine conditions are numerically simulated by the equalization equation when the two-phase flow is closed.It is found that there is a swirl around the surface of the wavy bottom, which rotates clockwise, the pressure on the wavy bottom is wave-like, and the difference between the adjacent wave peaks and the trough decreases in the hydraulic jump region.When the opening of the sluice hole and the roughness of the bottom plate are the same, the free water jump length and the energy dissipation rate of the wave bottom stilling pool increase with the increase of Froude number of the inlet section.
【作者单位】： 西安理工大学陕西省西北旱区生态水利工程重点实验室;
【基金】：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)
【分类号】：TV135.2
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本文编号：1711456