Author(s)

David B. Carrington and Darrell W. Pepper

Abstract

A boundary element method (BEM) is used with a Lagrangian particle transport technique (LPT) to simulate indoor dispersion of contaminants. The BEM is used to create a simple mass-conservative velocity field within a building interior or room; the LPT employs a stochastic/random walk approach to generate a feasible dispersion pattern for contaminants released within the interior. The model provides a quick estimate of the potential dispersion pattern and flow field within a building interior. The use of the BEM and particle transport techniques permits irregular geometry, typical of interiors within buildings, to be easily simulated, and executes quickly on PCs. 1 Introduction Emission of pollutants and their accumulation due to poor ventilation and air exchange a

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