Assessing impact of intermittent window opening strategies on pathogen-laden droplet dispersion in a coach bus
作者机构：School of Atmospheric SciencesSun Yat-sen Universityand Southern Marine Science and Engineering Guangdong LaboratoryZhuhai 519082China Key Laboratory of Urban MeteorologyChina Meteorological AdministrationBeijing 100089China China Meteorological Administration Xiong'an Atmospheric Boundary Layer Key LaboratoryXiong'anChina Guangzhou Urban Planning&Design Survey Research InstituteGuangzhou 510060China Guangzhou Collaborative Innovation Center of Natural Resources Planning and Marine TechnologyGuangzhou 510060China Guangdong Enterprise Key Laboratory for Urban SensingMonitoring and Early WarningGuangzhou 510060China Welsh Schoolof ArchitectureCardiff UniversityUK Guangdong Province Engineering Laboratory for Air Pollution ControlSouth China Institute of Environmental Sciencesthe Ministry of Ecology and Environment of ChinaNo.7 West Street YuancunGuangzhou 510655China Guangdong Fans-tech Agro Co.LtdGuangdong ProvinceChina
出 版 物：《Building Simulation》 (建筑模拟（英文）)
年 卷 期：2024年第17卷第7期
页 面：1183-1200页
核心收录：
学科分类：08[工学] 0812[工学-计算机科学与技术（可授工学、理学学位）]
基 金：supported by the National Natural Science Foundation of China(No.42175095,No.42005069,and No.42175180) support from Guangdong Major Project of Basic and Applied Basic Research(2020B0301030004,2021B0301030007) the UK GCRF Rapid Response Grant on“Transmission of SARS-CoV-2 virus in crowded indoor environment”,and the Innovation Group Project of the Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai)(No.311020001)are also gratefully acknowledged
主 题：infection risk computational fluid dynamics air change rate per hour natural ventilation wind catcher tracer gas dispersion
摘 要：Opening windows in coach buses is a practical approach to improving natural ventilation and mitigating infection risk(IR).Due to human behavior and weather conditions,the intermittent window opening strategy(IWOS)is a more common practice than keeping windows constantly *** its prevalence,there are no studies exploring IWOS specifically in *** employed indoor-outdoor coupled CFD simulations to assess the effects of various IWOS on pathogen-laden droplet(PLD)dispersion and IR in a coach bus that occurred a COVID-19 outbreak in Hunan,*** reveal that after ventilating through two skylights for 600–1800 s,opening front and rear windows(FW+RW)or FW with a wind catcher(FW+WCH)for just 40 s can reduce PLD concentration(Cave)to 5%of its initial level and the intake fraction of the infector’s neighbor(IFn)drops by 95%.Upon closing FW+RW or FW+WCH,Cave and IFn take over 580 s to return to the pre-opening ***,intermittent FW opening halves Cave and IFn within 7 min,but leads to rapid increases upon window ***,opening FW+RW and FW+WCH intermittently have pronounced impacts on indoor PLD concentration and are applicable approaches to control respiratory disease transmission in *** to the inhaled viral dose,it is recommended to open windows when driving time is over 12 minutes to reduce infection *** scenarios like epidemiological surveys and risk assessments,where assessing passenger infection risk is vital,some behaviors of opening windows cannot be overlooked and necessitate extra attention.
维普期刊数据库