水力发电学报2011，Vol.30Issue(3)：175-179,5.
可逆式水轮机泵工况下驼峰现象的数值模拟
Numerical simulation of the positive-slope performance curve of a reversible hydro-turbine in pumping mode
摘要
Abstract
In this work, steady flows in the reversible hydro-turbines with head-discharge curves featured by high part-load positive slopes were simulated and analyzed, and the calculation was compared with measurements. The results show that the SST k-ω turbulence model with a grid size variation with y-plus near solid walls can accurately simulates the maximum point and its adjacent points on the positive-slope performance curve. Analysis shows that the flow patterns near the impeller inlet and outlet are closely related to the positive slope of the performance curve.关键词
水力机械/可逆式水轮机/扬程流量曲线/驼峰/流动分离Key words
hydraulic machinery/ reversible hydro-turbine/ head discharge curve/ positive slope/ flow separation分类
建筑与水利引用本文复制引用
冉红娟,张瑶,罗先武,许洪元..可逆式水轮机泵工况下驼峰现象的数值模拟[J].水力发电学报,2011,30(3):175-179,5.基金项目
国家自然科学基金资助项目(50976061) （50976061）
浙江省科技计划项目(2007C21064) （2007C21064）
山东省自主创新重大科技专项计划(2006GG1108022) （2006GG1108022）
