大空间建筑室内热环境CFD模拟中壁温及室温的求解
Solution to wall temperature and indoor temperature in CFD simulation of thermal environment in a large space building
摘要：
应用PHOENICS 软件模拟某体育馆的室内热环境 , 将壁温作为模拟的第一类边界条件 。建立了室内表面对流辐射耦合换热方程 , 着重讨论了采用表面换热分析法求解表面传热系数以求解壁温的方法 。因壁温计算和室温计算互相耦合 , 采用迭代计算的方法求解壁温和室温 。 模拟计算结果与实测结果基本吻合 。
关键词：室内热环境,边界条件,壁温,室温,表面传热系数,表面换热分析,迭代计算
Abstract：
Simulates the indoor thermal environment with PHOENICS software, taking wall temperature as the first kind boundary condition. Gives the coupled equations of convection heat transfer and radiation heat transfer for indoor surfaces. Applies the method of surface heat transfer analysis to calculating the convective heat transfer coefficient in order to solute the wall temperature. Mathematic calculation of the wall temperature and CFD calculation of the indoor temperature are dependent on each other, so they are determined through an iterative procedure. Simulation results are accordant with the results from measurement.
Keywords:indoor thermal environment, boundary condition, wall temperature, indoor temperature, surface coefficient of heat transfer, surface heat transfer analysis, iteration calculation