载人列车车厢内空气流场温度场数值模拟  

Numerical Simulation of airflow and temperature fields in railway occupied passenger car

作　　者：张登春[1] 翁培奋[1] 

机构地区：[1]上海大学应用数学和力学研究所

出　　处：《计算力学学报》2007年第6期904-910,共7页Chinese Journal of Computational Mechanics

基　　金：湖南省教育厅优秀青年基金(0713022);湖南省教育厅资助科研(03C495)资助项目

摘　　要：采用稳态不可压缩雷诺时均N-S方程、k-ε湍流模型,计算了载人列车车厢内三维空气流场和温度场。将太阳辐射热和人体散热作为能量方程的附加源项,研究了在条缝送风条件下,乘客和太阳辐射对车厢内流场和温度场的影响。计算结果表明:现有的送风方式除车厢两端外,车厢内沿长度方向气流分布比较均匀;送风口的布置对车厢内流场温度场分布影响较大,送风气流在车厢两侧形成两股比较大的流动旋涡;人体散热和太阳辐射对车厢内流场温度场影响较大,非空载时车厢内流场分布与空载时有较大差别,太阳照射和人体产生的热气流使车厢内存在较大的温度梯度,靠窗处的温度较高,过道处温度较低。流场温度场的计算结果和实验数据吻合较好。Based on bulence model, the the steady state three-dimension calculated numerically. The solar ra incompressible Reynolds-averaged Navier-Stokes equations, k-ε turairflow and temperature fields in railway occupied passenger car are diation and body heat are additional source terms of energy equation, the influence of passenger and solar radiation on airflow and temperature fields is investigated based on sew supply air. The results show that existing supply modes make the inferior flow distribution homogeneous except for the ends. The layout of supply air grille has much effect on airflow and temperature fields, two eddies exist on either sidewall. Body heat and solar radiation also have much influence on air- flow and temperature fields, the air distribution in occupied passenger car differs from that in empty one, the heat flux from body heat and solar radiation produce a much big temperature gradient in occupied passenger car, the temperature near windows is higher while lower in passageway. The numerical results of velocity and temperature fields coincide properly with the experimental results.

关 键 词：车厢 湍流模型 流场 温度场 计算流体动力学 

分 类 号：TK124[动力工程及工程热物理—工程热物理] U238[动力工程及工程热物理—热能工程]