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NUMERICAL SIMULATION ON THE WIND FIELD STRUCTURE OF A MOUNTAINOUS AREA BESIDE SOUTH CHINA SEA DURING THE LANDFALL OF TYPHOON MOLAVE
Received:January 31, 2013  Revised:January 15, 2014
KeyWords:typhoon  numerical simulation  wind structure  Shenzhen  mountainous area
Fund:National Natural Science Foundation of China (91215302, 51278308); Open Project for State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics (LAPC)
Author NameAffiliationE-mail
LI Lei 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
 
chonp@163.com 
CHAN Pak-wai Hong Kong Observatory, Hong Kong, China
 
 
HU Fei State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Beijing 100029 China
 
 
ZHANG Li-jie Shenzhen National Climate Observatory, Shenzhen Meteorological Bureau, Shenzhen 518040 China
 
 
LIU Yan-xiang 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.
DOI:
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