Numerical Analysis of Transient Heat Transfer of Hollow Block

Numerical simulation was applied to analysing performance of transient heat transfer of hollow block. The paper considered influence of convection and radiation of internal and external of computational domain in the process of analysis. The effect of solar radiation on enclosure structure was added in comprehensive temperature of outdoors, while regions of inner hole adopted nature convection and discrete ordinates radiation model. The results show that internal radiation have a great influence on heat transfer process of hollow block, the thermal resistance value present simple harmonic wave periodic fluctuation under the hypothesis conditions. So the internal radiation must be considered in numerical simulation, the results of simulation of outdoor environment have certain guiding significance for field detection.