NUMERICAL SIMULATION ON THE WIND FIELD STRUCTURE OF A MOUNTAINOUS AREA BESIDE SOUTH CHINA SEA DURING THE LANDFALL OF TYPHOON MOLAVE |
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| Authors: | LI Lei CHAN Pak-wai HU Fei ZHANG Li-jie and LIU Yan-xiang |
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| Institution: | Shenzhen National Climate Observatory, Shenzhen Meteorological Bureau, Shenzhen 518040 China; State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Beijing 100029 China;;Hong Kong Observatory, Hong Kong, China;;State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Beijing 100029 China;;Shenzhen National Climate Observatory, Shenzhen Meteorological Bureau, Shenzhen 518040 China;;Public Meteorological Service Center, Chinese Meteorological Administration, Beijing 100029 China |
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| Abstract: | Leveraging the commercial CFD software FLUENT, the fine-scale three-dimensional wind structure over the Paiya Mountains on the Dapeng Peninsula near Shenzhen, a city on the seashore of South China Sea, during the landfall of Typhoon Molave has been simulated and analyzed. Through the study, a conceptual wind structure model for mountainous areas under strong wind condition is established and the following conclusions are obtained as follows: (1) FLUENT can reasonably simulate a three-dimensional wind structure over mountainous areas under strong wind conditions; (2) the kinetic effect of a mountain can intensify wind speed in the windward side of the mountain and the area over the mountain peak; and (3) in the leeward side of the mountain, wind speed is relatively lower with relatively stronger wind shear and turbulence. |
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| Keywords: | typhoon numerical simulation wind structure Shenzhen mountainous area |
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