Different Methods to Compute Pollutant Dispersion Around Buildingsby R. Panneer Selvam, Univ of Arkansas, Fayetteville, United States,
Alan H. Huber, Univ of Arkansas, Fayetteville, United States,
Abstract: Different methods to approximate the advection terms currently in use are reviewed. Holly-Preismann (HP) cubic interpolation using method of characteristics, Chapeau function (CF) method and the method of characteristics in weak formulation (MCWF) are implemented in a finite difference grid and applied to solve scalar advection of translating and rotating Gaussian hill in two dimension by time-splitting. MCWF predicted better than CF in maintaining the shape and not producing much negative values. These two can be used to predict the pollutant dispersion around buildings with out much numerical diffusion.
Subject Headings: Finite difference method | Advection | Pollutants | Computer models | Air pollution | Grid systems | Rotation | Gaussian process
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