夏热冬冷地区学生宿舍内不同通风策略气溶胶扩散特性研究

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中图分类号：TU831文献标识码：A

Research on the Aerosol Diffusion Characteristics of Different Ventilation Strategies in Student Dormitories in Hot Summer and Cold Winter Areas

XIAO Wei， LIU Dongxu，LIU Chunyuan*，XU Zhanfei，LU Caimiao，MO Jingran （Collge of Urban Construction and Safety Engineering，Shanghai Instituteof Technology，Shanghai 2O1418，China）

Abstract：Using densely populated student dormitories as the research site，numerical simulation methods were used to study the diffsion characteristics of infectious cough aerosols under four ventilation strategies. The results indicate that there are diferences in the impact range and mass concentration of aerosols indoors under different ventilation strategies.The size of indoor ventilation area willaffect the diffusion rate of cough aerosols，and the larger the ventilation area，the faster the difusion rate of particles indoors.The ranking of indoor aerosol particle residual rates under the four ventilation strategies is as follows： small gap ventilation of doors and windows > open door ventilation > open window ventilation > fully open door and window ventilation. Under the ventilation strategies of fully opening doors and windows and small gaps in doors and windows，the relative aerosol capture rate of students in the lower bunk of the room is higher than that of students in the upper bunk. These results are of great significance for understanding the impact of different ventilation strategies on indoor air quality and student health.

Key words： collge dormitory；aerosols；ventilation strategy；diffsion characteristic； ComputationalFluid Dynamics

呼吸道传染病主要的传播途径包括飞沫传播和接触传播，而在相对密闭的环境中也可通过气溶胶传播[1]。（剩余8245字）