Original paper
Simulation of building-induced airflow disturbances in complex terrain using meteorological-CFD coupled model
Lo, K.W.; Hon, K.K.; Chan, P.W.; Li, L.; Li, Q.S.
Meteorologische Zeitschrift Vol. 31 No. 4 (2022), p. 317 - 330
15 references
published: Oct 13, 2022
published online: Jun 29, 2022
manuscript accepted: Apr 5, 2022
final revised version received: Apr 5, 2022
manuscript revision requested: Feb 24, 2022
manuscript received: Jan 25, 2022
Open Access (paper may be downloaded free of charge)
Abstract
Tiny anticyclonic vortices have been observed at the arrival runway corridor to the east of the central runway of the Hong Kong International Airport many times. However, it is not sure about the cause of such vortices. In this paper, a meteorological model is coupled with a computational fluid dynamics (CFD) model in high spatial resolution in an attempt to simulate such vortices. The performance of this coupled model is first checked by comparing with the observed building wakes. This model is found to successfully capture the wakes and jets. It is then used to simulate the situation of anticyclonic vortex at the said region, with and without the presence of a key building called AsiaWorld-Expo. It is found that, with the presence of the building only, the anticyclonic vortex can be simulated. This adds more confidence that such vortex is a result of the interaction between the background southwesterly flow with the AsiaWorld-Expo.
Keywords
short-range LIDAR • building-induced vortex • large eddy simulation • structure function