Different Methods to Compute Pollutant Dispersion Around Buildings

by R. Panneer Selvam, Univ of Arkansas, Fayetteville, United States,
Alan H. Huber, Univ of Arkansas, Fayetteville, United States,



Document Type: Proceeding Paper

Part of: Computing in Civil Engineering

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 | Air pollution | Numerical methods | Buildings | Advection | Numerical models | Computer models

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