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论文类型：期刊论文

发表时间：2020-04-01

发表刊物：BUILDING AND ENVIRONMENT

收录刊物：EI、SCIE

卷号：172

页面范围：106705

ISSN号：0360-1323

关键字：Natural ventilation; Buoyancy; Wind; Gaseous pollutant; Cross-transmission; Window configuration

摘要：Single-sided natural ventilation was numerically investigated to determine the impact of buoyancy and wind on the cross-transmission of pollution by considering six window types commonly found in multistory buildings. The goal of this study was to predict the gaseous pollutant transmission using computational fluid dynamics based on the Reynolds-averaged Navier-Stokes equations and baseline k-co turbulence equations. The results indicated that ventilation rates generally increased with increasing wind speeds if the effects of buoyancy and wind were not suppressed; however, the re-entry ratio representing the proportion of expelled air re-entering other floors and the corresponding risk of infection decreased. If the source of the virus was on a central floor, the risk of infection was the highest on the floors closest to the source. Different window types were also considered for determining their effectiveness in controlling cross-transmission and infection risk, depending on the source location and driving force (e.g., buoyancy and wind).