【摘要】 在空调扫风情况下,会引起室内微小颗粒物的二次悬浮,影响室内空气质量以及人类身体健康。在室内空调扫风情况下,通过CFD模拟研究地面颗粒物的具体运动轨迹,探究产生二次悬浮的原因,使用Fluent软件对室内地面颗粒物进行非定常数值模拟。分析结果表明:室内空调扫风情况下颗粒物的二次悬浮主要是由于在扫风的情况下,空气中产生了速度场和大量的涡,这些速度场以及涡的出现会引起微小颗粒物的二次悬浮,颗粒物会在各方面综合作用下跟随流场运动并产生逸散行为。更多还原

【Abstract】 Under the condition of air-condition wind swept,the resuspend fine particle on indoor ground will affect indoor air quality and human health.It can provide the basis for improving indoor air quality by studying the trajectories of particle resuspension.In order to understand the specific trajectories of ground particles and the causes of resuspension in the condition of indoor air-condition wind swept,the particle movement was transient simulated by Fluent software.The results showed that:under the air-condition wind swept situation,the emergence of the velocity field and vortex will cause the resuspension of particles,particles will be integrated in all aspects of motion and follow the flow field in a dissipation behavior.更多还原