日光模拟器对试验室内传热影响的数值分析

Numerical Simulation of the Effect on Sunlight Simulator to Heat Transfer in Laboratory

应用CFD技术对沙漠环境模拟试验室内的传热过程进行了模拟,分别比较了日光模拟器的高度和开启组数对室内温度场和地面辐射分布的影响。研究发现随着日光模拟器高度升高热气流越难被带走,地面太阳辐射值明显减小。随着灯的数量增加,室内上升气流的趋势越明显,地面太阳辐射值明显增大。将灯布置成"梅花状",有利于辐射照度的均匀。

In this paper, it simulated the heat transfer in the desert environment simulation laboratory with the technique of CFD It compared the influence of sunlight simulator to the indoor temperature field and distribution of floor solar radiation. It was found that increased the lamp＇s altitude, the hot current was more difficult to be carry off and the floor solar radiation value reduced obviously; Increased the lamp＇s quantity, the current of indoor upstream was more obvious and the floor solar radiation value elevated obviously. It was propitious to obtain a uniform radiant luminance if the lamp arranged as ＂plum blossom＂.