溢流表孔Y型宽尾墩与消力塘联合消能数值模拟  

The Combined Energy Dissipation Numerical Simulation of Spillway Outlet Y-shaped Flaring Pier and Plunge Pool

作　　者：冯瑞林 杨海英 FENG Rui-lin;YANG Hai-ying(China Power Kunming Engineering Corporation Limited, Kunming 650051, Yunnan, China;College of Irrigation, Yunnan University of Agriculture, Kunming 650201, Yunnan, China)

机构地区：[1]中国电建集团昆明勘测设计研究院有限公司,云南昆明650051 [2]云南农业大学水利学院,云南昆明650201

出　　处：《云南水力发电》2017年第5期56-58,79,共4页Yunnan Water Power

摘　　要：基于果多水电站,采用标准双方程紊流模型,结合VOF模型追踪自由表面,对几何模型进行分区处理及采用非结构化网格进行网格剖分,对Y型宽尾墩窄缝消能与消力塘联合消能泄流场进行了三维数值模拟。通过模拟,得到了泄流场整体流态,并对溢流表孔中线X向和Y向流速分布、消力塘内流速分布、溢流面和消力塘底板的压强分布进行了研究。经2016年4月至2016年11月过流情况的监测,大坝溢流表孔实际水流流态、消力塘水位等特征参数与数值计算结果基本吻合,计算结果较为理想。According to the practice in Guoduo hydropower plant,the paper carried out partitioning of the geometry model by the standard double-equation turbulence model,taking into account the VOF model following free surface,conducted mesh generation by unstractured meshes and performed3D numerical simulation of combined energy dissipation water discharge area of Y-shaped fl aring pier and plunge pool energy dissipation.Through simulation the whole flow regime of the water discharge area was obtained,and the distribution of flow velocity in X and Y directions of the spillway outlet central line,the distribution of flow velocity within the plunge pool and the distribution of pressure intensity of overflow face and plunge pool bottom plate were studied.The overfl ow monitoring conducted during the period from April,2016to November,2016shows that the characteristic parameters such as the actual fl ow regime of the dam spillway outlet and the water level of the plunge pool basically conform with the numerical calculations,which are considered desirable.

关 键 词：果多水电站 Y型宽尾墩 消力塘 数值模拟 

分 类 号：TV135.2[水利工程—水力学及河流动力学]