Solution to wall temperature and indoor temperature in CFD simulation of thermal environment in a large space building

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.