LARGE-EDDY SIMULATION OF MICROBURST WINDS FLOWING AROUND A BUILDING

A large eddy simulation of a microburst producing thunderstorm is carr ied out. The thunderstorm is initiated when a thermal within a develop ing mixed layer reaches the lifting condensation level and strong late nt heating occurs. A microburst is subsequently produced as condensate from the thunderstorm falls beneath the melting level. In this study, the viability of using two-way interactive multiple-nested grids to i nvestigate the interaction of the outflow from the microburst with a m uch smaller scale architectural structure is investigated. The relatio nship of the fluctuating winds around the building to the microburst s tructure is described.