飞沫污染物在轿车车室内的传播  

Propagation of droplet pollutants in compartment

作　　者：张晋哲 陈硕[1] ZHANG Jinzhe;CHEN Shuo(School of Aerospace Engineering and Applied Mechanics,Tongji University,Shanghai 200092 China)

机构地区：[1]同济大学航空航天与力学学院,上海200092

出　　处：《计算机辅助工程》2023年第1期27-32,共6页Computer Aided Engineering

摘　　要：为研究人打喷嚏时所释放的飞沫在车室内的运动情况,通过实验与仿真,计算出较为准确的轿车车室内稳定流场。使用欧拉-拉格朗日方法计算飞沫在车室内的传播。结果表明:粒径较大的飞沫由于质量和惯性较大,运动轨迹较难受到空气气流的影响,很难被排出车室;粒径越小的飞沫越容易蒸发,形成更小的微生物粒子,更容易跟随气流运动,也更容易被排出车室。提高空调送风速度会更有效地排出车室内污染物。In order to study the movement of droplets released by human sneezing in the compartment,using the experiment and simulation,a more accurate and stable flow field in the compartment is calculated.The propagation of droplets in the compartment is calculated using the Eulerian-Lagrangian method.The results show that the larger particle size droplets are difficult to be affected by the air flow because of their large mass and inertia,and are often difficult to be discharged from the compartment.The smaller the particle size,the easier the droplets are to evaporate and form smaller microbial particles,which are easier to follow the airflow and be discharged from the compartment.Increasing the air supply speed of the air conditioner will more effectively discharge the pollutants in the compartment.

关 键 词：轿车车室 计算流体力学 污染物 防疫 

分 类 号：X513[环境科学与工程—环境工程] TB115[理学—数学]