二维温度分层流的数值模拟  

Numerical simulation of two-dimensional temperature stratified flow

作　　者：江春波[1] 马强[1] 付清潭 

机构地区：[1]清华大学,北京100084 [2]长江水利委员会综合管理中心,湖北武汉430010

出　　处：《水力发电》2003年第2期24-26,共3页Water Power

基　　金：国家自然科学基金项目 (5 99790 13)

摘　　要：以N S方程为基础 ,考虑水流温度分层的特点 ,采用了二维温度分层流的大涡数值计算模型 ,根据Smagor insky Deardorff大涡模型方法对运动粘性系数和运动扩散系数进行模拟。通过对港口取水系统进行模拟 ,得到了水温与流速分布 ,正确地模拟了温度分层现象 ;Based on the N S equations, the large eddy model of two dimension temperature stratified flow is adopted in consideration of the characteristics of temperature stratified flow. The kinematical viscosity coefficient and kinematical diffusion coefficient were simulated according to the Smagorinsky Deardorff LES model method. Through the simulation of the port water extracting system, it is shown that the computational results meet with the distribution laws of the temperature and velocity of water flow and at the same time the effects of different engineering measures on reducing the water extracting temperature are compared.

关 键 词：Smagorinsky-Deardorff大涡模型 温度分层流 N-S方程 数值模拟 

分 类 号：TV131[水利工程—水力学及河流动力学]