摘要
本文采用高斯型滤波函数对Navier Stokes方程进行滤波处理 ,再引入亚格子雷诺应力模型推导出了在水力机械内部流场计算中实用的二维大涡模拟方程 ,并在贴体坐标系下得到计算平面二维大涡模拟方程及其离散形式 ,编制了数值计算程序 ,应用该程序计算了双流道式污水泵叶轮内部流场 ,得到了满意的速度分布和压力分布规律。在此基础上 。
In this paper, Gauss filter function is used to filter the N S equation and the subgrid scale Reynold stress model is introduced to deduce the practical form of LES equation for 2 D flow calculation of hydraulic machine. Then the LES equation and its discrete form in body fitted coordinate system are obtained and the numerical calculation program is developed. The incompressible turbulent flow in double flow conduits sewage pump impeller is computed by using the abovementioned program, and the distribution laws of velocity and pressure in flow field are obtained. Based on this, the designs of double flow conduits sewage pump impeller are optimized.
出处
《水动力学研究与进展（A辑）》
CSCD
北大核心
2003年第3期289-293,共5页
Chinese Journal of Hydrodynamics
