Wind tunnel experiment of gas diffusion in stably stratified flow over a complex terrain |
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| Institution: | 1. College of Pipeline and Civil Engineering, China University of Petroleum, No.66, Changjiang West Road, Qingdao 266580, China;2. Department of Resources and Environment, Binzhou University, No.391, The Yellow River Five Road, Binzhou 256600, China;3. Southern China Subsidiary of Sinopec Sales Company Limited, No.191, Tiyuxi Road, Guangzhou 510620, China;1. Division of Medical Imaging, Health Management Center, Cheng-Hsin General Hospital, Taipei, Taiwan;2. Heart Center, Cheng-Hsin General Hospital, No. 45, Zhenxing Street, Beitou District, Taipei, Taiwan;3. Faculty of Medicine, National Yang-Ming University, Taipei, Taiwan;4. Institute of Microbiology and Immunology, School of Medicine, National Yang-Ming University, Taipei, Taiwan;5. Faculty of Medicine, National Defense Medical Center, Taipei, Taiwan;6. Graduate Institute of Clinical Medicine, National Taiwan University, Taipei, Taiwan |
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| Abstract: | Wind tunnel experiments were conducted to investigate air flow and gas diffusion in neutrally and stably stratified flows over complex terrain, using a terrain model of Steptoe Butte in the U.S.A.The terrain model was made with an aluminium cast and cooled by using transistor thermo-modules in order to simulate a stably stratified flow over the complex terrain. The wind tunnel results for gas concentration were superposed by a computer using probability distributions for wind direction, wind velocity and atmospheric stability observed at Steptoe Butte, in order to compare the wind tunnel results with field data.Application of the superposition method provided better agreement with field data than the usual method without the superposition. |
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