会议室人体飞沫气溶胶颗粒运动规律的数值分析

Numerical simulation of movement of droplet aerosols in conference room

采用Lagrange方法建立描述气溶胶颗粒运动的离散相数学模型,通过CFD数值模拟方法,对会议室内人说话产生的飞沫气溶胶颗粒污染物的运动规律进行分析。数值模拟结果发现:当送风量保持不变时,减小送风口面积、增大送风速度,可以加速飞沫气溶胶颗粒排出房间,更容易避免飞沫气溶胶的传播,减少人员之间的交叉感染。

Using Lagrange method to build discrete phase model which is used to describe movement of droplet aerosols.Using CFD numerical simulation method to study the movement of droplet aerosols generated by speaking in conference room.Through CFD numerical simulation,it is found that if the air output remains unchanged,reducing the supply air outlet area and increasing the speed of supply air,the droplet aerosols are discharged out of the room quickly,the spread of aerosol droplets is more easy to avoid and the cross infection between people is reduced.