Qun Wang

TL;DR: Investigation of a Hong Kong COVID-19 outbreak in early 2021 in four traditional Tong Lau houses with subdivided units shows that the outbreak was probably due to multiple transmission routes, i.e. by the drainage pipe spread of stack aerosols, which is enhanced by poor ventilation in the subdiv divided units.

TL;DR: In this article , the authors conducted computational fluid dynamics simulations to obtain the wind-pressure coefficients of each external opening on the eighth floor of a public housing building in Hong Kong to estimate the airflow rate and aerosol concentration in the flats and corridors on that floor.

TL;DR: In this paper, two types of scale-model were used to arrange north-south street canyons (the empty model with wall thickness of 1.5 cm and the sand model with all buildings are filled with sand producing bigger heat capacity) to conduct measurement over three days.

TL;DR: In this paper , the impacts of building configurations and tree planting on airflows, pollutant dispersion, and personal exposure in 3D urban micro-environments (aspect ratio = H/W = 30 m, building packing density λp = λf = 0.25) under neutral atmospheric conditions were investigated.

TL;DR: In this article, the characteristics of mean flow structures and turbulence statistics of inversion breakup at the two-dome stage were investigated by conducting reduced-scale water tank experiments, and a two-layer density profile was created to simulate the surface-based inversion covered by a neutral residual layer.