摘要
利用带浮升力效应的K -ε湍流模型对空调列车室内气流分布进行了数值模拟。将人体散热和太阳辐射作为能量方程的附加源项 ,采用交错网格控制容积法将计算区域进行离散 ,用SIMPLE算法求解离散控制方程 ,研究了空调硬座列车室内空气流动速度和温度分布规律及热舒适评价指标PMV -PPD ,为空调列车室内气流组织的优化设计提供依据。
By K-ε turbulence model,the indoor air/solids fluid flow and heat transfer conjugated programs are resolved by finite volume method on a staggered grid with SIMPLE algorithm.The effect of solar radiation and body heat is taken into account and these auxiliary heat flows are the source term of the energy equaiton.the 3-D distributions of the airflow and temperature field and thermal comfort index PMV-PPD in the chamber are numerically simulated.A basis is given for the optimized design of air distribution in air-conditioned train passenger compartment.
出处
《建筑热能通风空调》
2002年第6期18-21,共4页
Building Energy & Environment
关键词
空调列车
室内
K-ε湍流模型
气流组织
热舒适
K-ε turbulence model,air-conditioned compartment,air distribution,thermal confort
