摘要
针对南水北调天津段对水流控制的特殊要求,考虑了大口径环喷式流量调节阀的不规则几何形状和各结构尺寸对其性能的影响,采用基于非结构、交错网格的有限体积法求解用k-ε两方程模型封闭的雷诺平均N-S方程组,对其进行了二维数值模拟,得到了阀内流场的分布,并以此为基础,从减小过阀损失、减小涡量、预防汽蚀的角度,对其结构进行优化.
This paper aims at the special request of controlling water discharge for the Tianjin section of the South-to-North Water Transfer Project. The 2-D numerical method is used to solve the Reynolds averaged Navier-Stokes equations using a finite volume method based on unstructured and staggered grid as well as the standard/ee model. The irregular geometry of the large diameter cyclic type regulating valve and all structural dimensions are considered. Based on the data above, from the angle of minimizing the hydraulic losses and vortices and preventing cavitation, its construction is optimized.
出处
《武汉大学学报（工学版）》
CAS
CSCD
北大核心
2006年第1期76-79,105,共5页
Engineering Journal of Wuhan University
关键词
数值模拟
流量调节阀
南水北调
优化设计
有限体积法
numerical simulation
cyclic type regulating valve
South-to-North Water Transfer Project
optimum design
finite volume method
