Modeling solid particle transport and air flow around obstacle

Abstract

In the present study, to describe particulate matter transport processes in the air around the bluff body that simulates building, computational fluid dynamics methods (CFD) were used. The paper considers the Euler-Lagrange approach for modeling a multiphase "air-solid particles"flow, in which the gas phase is modeled using the 3D unsteady Reynolds-Averaged Navier-Stokes equations, and the dispersed phase is modeled using the DPM method. The model configuration is considered to describe the PM10 particles' injection into the air crossflow in an obstacle's vicinity. Based on the numerical simulation results, the gas flow structure and particle transport parameters for two different configurations were investigated. It is shown that the chosen numerical model makes it possible to give a detailed qualitative description of the unsteady particle plume transport and to provide additional data for the experiment.