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JOURNAL OF DESERT RESEARCH  2013, Vol. 33 Issue (6): 1840-1847    DOI: 10.7522/j.issn.1000-694X.2013.00244
Weather and Climate     
Simulating Wind Environment of Valley City Based on CFD Technology: A case study of Chengguan District of Lanzhou, China
LIU Li-jun, L  Ping, LIANG You-jia
Key Laboratory of Desert and Desertification, Cold and Arid Regions Environment and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China
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Abstract  

 In this paper, Computational fluid dynamic(CFD) software was used to simulate the wind environment in Chengguan District of Lanzhou. SRTM topographic data for the Chengguan District of Lanzhou, were generated by application of ArcGIS software to solve this problem. The roughness of the terrain of the studied area was calculated from ArcGIS, and climate data were converted into digital parameters and the CFD model boundary conditions, and wind environment of the studied area was simulated for the first time. The results showed that: (1) The wind speed of the airflow over the mountains in the valley areas reached maximum. When mountain height increased, the wind speed values increased. But it decreased significantly in Leeward, reaching 0-1 m·s-1; (2) Air transited forward along the valley, and wind speed reached 0-1 m·s-1 at the valley bottom; (3) The simulation experiments of the urban heat island effect indicated airflow transit was stagnated by lot heated.

Key words:  computational fluid dynamic      valley cities      wind environment      heat island effect     
Received:  25 September 2012      Published:  25 November 2012
ZTFLH:  P425  
Articles by authors
LIU Li-jun
L Ping
LIANG You-jia

Cite this article: 

LIU Li-jun, L Ping, LIANG You-jia. Simulating Wind Environment of Valley City Based on CFD Technology: A case study of Chengguan District of Lanzhou, China. JOURNAL OF DESERT RESEARCH, 2013, 33(6): 1840-1847.

URL: 

http://www.desert.ac.cn/EN/10.7522/j.issn.1000-694X.2013.00244     OR     http://www.desert.ac.cn/EN/Y2013/V33/I6/1840

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