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《Chinese Journal of Atmospheric Sciences》 1993-01
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A Random Walk Diffusion Model in the Convective Boundary Layer

Li Zongkai(Department of Atmospheric Sciences, Nanjing University, Nanjing 210008)Du Shuming(Nanjing Institute of Meteorology, Nanjing 210044)  
After analysing the structure of turbulence in convective boundary layer (CBL), it is first suggested that the vertical diffusion in CBL can be simulated by turbulence on two different scales, and then a simple random walk diffusion model for CBL is developed. Two cases of elevated continuous point sources in a typical convective condition are simulated in comparison with the Willis and Deardorff water tank modelling, Lamb's numerical simulation, and CONDORS field experiments. We are confident that the model can successfully simulate the cross-wind integrated concentration distribution in CBL, and that our model has advantages of using less input parameters, much short computation time and is more suitable for practical uses.
【Fund】: 国家自然科学基金
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Chinese Journal Full-text Database 2 Hits
1 Zhu Zhongzhan; Li Zongkai(Department of atmospheric science,Nanjing University,Nanjing, 210008);A DOUBLE GAUSSIANS PDF MODEL ON DISPERSION IN CONVECTIVE BOUNDARY LAYERS[J];ACTA METEOROLOGICA SINICA;1995-01
2 HAN Long-xi1,2,3,CHEN Li-na3 (1.State Key Laboratory of Hydrology-Water Resource and Hydraulic Engineering, Nanjing 210098,China;2.Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes,MOE,Nanjing 210098,China;3.College of Environmental Science and Engineering,Hohai University,Nanjing 210098,China);Revised random walk model for degradable water pollutant[J];Advances in Water Science;2009-05
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【Secondary References】
Chinese Journal Full-text Database 1 Hits
1 ZHANG Hong-yu,ZHANG ZHi-sheng, WANG Nai-yan, LIU SHun-min (Nanjing University of Science and Technology , Institution of Chemistry ,Nanjing 210094,China);Comparison of Smoke Atmospheric Dispersion between Gauss Model and Random Walk Model[J];Electro-optics & Passive Countermeasures;2004-06
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