摘要
Abstract
For the purpose of studying the influence in the pressure and velocity coupling mode of water turbine numerical computation, the three -dimensional model of water turbine units has been established.Measure points are located in volute, runner and draft tube.Through the calculation, the data of flow field and pressure fluctuation are acquired.The result indicates that under the Piso and Simple mode with pressure and velocity coupling, the velocity field distribution is small, but the pressure field has a great many difference.Pressure pulsation in Piso model is high frequency, on the contrary, it is low frequency in simple model.The calculation result simple model is agree with actual situation.关键词
压力与速度耦合模式/压力脉动/CFDKey words
Pressure velocity coupling mode/pressure pulsation/CFD分类
建筑与水利
