室内有毒有害气体扩散的数值模拟
Numerical simulation of indoor toxic or harmful gas diffusion
摘要：
采用基于RNG K-ε湍流模型的CFD方法，模拟了通风模型房间内的气流运动和由固定点释放的示踪气体CO2的浓度分布，分析了送风速度和释放源位置对浓度场的影响。气流速度场的模拟结果与文献中的流动显示实验结果比较吻合。
关键词：气体扩散,数值模拟,速度场,浓度场
Abstract：
Simulates the air flow in a ventilated model room and the concentration field of CO2 as a tracer gas released from a fixed point source using the CFD method based on the RNG K-ε turbulence model. Discusses the effects of air supply velocity and releasing source location on the concentration field. The simulation results of air velocity field are accordant with the flow visualization results from a literature.
Keywords:gas diffusion, numerical simulation, velocity field, concentration field