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First COVID-19 Engineering Lecture Series – Dispersion Modelling in a Dense City

Dec 17, 2020

COVID-19 Engineering Lecture Series_Enews 1

The first COVID-19 Engineering Lecture Series “Dispersion Modeling in a Dense City – Microscale Transport among Buildings and Its Implication to a Healthy Environment” was conducted on 17 December 2020 by Dr. C.H Liu of Department of Mechanical Engineering. The talk was facilitated by Professor S.C. Wong Associate Dean (Development and External Relations).

During the lecture, Dr Liu shared the transport of constituents, such as heat, aerosol and bacteria which are key components in atmospheric modeling. Mesoscale modelling is the current practice but is merely applicable to the microscale processes around the buildings in dense cities. The challenge is handling the broad spectra of motion scales induced by individual obstacles. In addition, Dr Liu has also shared the experience of using engineering computational fluid dynamics (CFD) to examine the effluent dispersion from a roof-level stack vent and its possibility of entrainment down to the lower floors. The collective effects of winds, buildings and topography on the transport processes are demonstrated to enrich our interpretation of the current practice. 

The next COVID-19 Engineering Lecture Series will be schedule in February 2021. Please stay tuned for further details.