单、双热源置换通风系统流场及温度场的数值模拟

Numerical simulation on velocity and temperature distribution of displacement ventilation systems with one or two heat sources

利用计算流体力学 (CFD)方法 ,分别对单、双热源置换通风系统进行了数值模拟。分析和比较了两种情况下室内空气的速度和温度分布 ,指出室内温度场在垂直方向上存在三个温升层 ;单、双热源形成的垂直温度分布有较大差别 ;双热源送风参数的计算不能简单按单热源的计算参数进行 。

Simulates the displacement ventilation system with one or two heat sources using the method of computational fluid dynamics (CFD). Analyses and compares the velocity and temperature distribution of indoor air about the two cases. Points out that there are three temperature rising layers in vertical, the vertical temperature distribution is different in the two cases, and the calculation of supply air parameters in two heat sources system can’t follow the calculating parameters of single heat source system for the effect of separate heat sources.