送风温度对置换通风房间流场影响的数值模拟

The Numerical Simulation of Air Supply Temperature's Influence on Flow Field of Displacement Ventilation Room

为得到送风温度对置换通风房间速度场及污染物浓度影响的规律,采用计算流体力学CFD软件,运用两方程湍流模型模拟不同送风温度下的房间流场。结果表明,在送风压力和其他边界条件不变的情况下,随着送风温度的降低,参考线上的速度值增大,污染物浓度减小。模拟结果对工程实际具有指导意义。

In order to obtian the regulation that air supply temperature influence on velocity field and contaminant concentration in the displacement ventilation room, this paper adopted computational fluid dynamatics software,and used two-equation turbulence model to simulate the flow field of different air supply temperature. The result showed that, when air supply pressure and other boundary conditions is fixed, with the decrease of air supply temperature, the speed value of reference line increased and contaminant concentration decreased. The simulation result has valuable guidance to engineering project