离心泵叶轮内部清水湍流的动态大涡模拟

被引：6

作者：

唐学林

陈稚聪

吴玉林

机构：

[1] 清华大学水利水电工程系

[2] 清华大学热能工程系北京

[3] 北京

来源：

清华大学学报(自然科学版) | 2004年 / 09期

关键词：

水泵叶轮; 动态模型; 大涡模拟; 湍流;

D O I：

10.16511/j.cnki.qhdxxb.2004.09.021

中图分类号：

TK73 [水力原动机、水轮机];

学科分类号：

080703 ; 080704 ;

摘要：

提出旋转坐标下的单相液体湍流的二阶双系数动态亚格子应力大涡模拟模型并加以验证。考虑亚格子应力的对称性和量纲一致性 ,在基于应变率张量和旋转率张量的不可约量及 Smagorinsky模型和亥姆霍兹定理的基础上 ,提出亚格子应力应表示为可解的应变率张量和旋转率张量的函数。在贴体坐标系下 ,利用交错网格系统和有限体积法离散湍流控制方程 ,采用 SIMPL EC方法求解方程。水泵叶轮中湍流的流速分布规律和压力分布等计算结果都与试验结果基本吻合 ,从而证明了此模型的可行性 ,以及计算方法和程序的可靠性

引用

页码：1231 / 1234

页数：4

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