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首页> 美国政府科技报告 >Finite element/finite difference approach for modeling three-dimensional flow and pollutant dispersion around structures.
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Finite element/finite difference approach for modeling three-dimensional flow and pollutant dispersion around structures.

机译：有限元/有限差分法模拟结构周围三维流动和污染物扩散。

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We are developing state-of-the-art numerical tools that can be used to provide reliable estimates of potential emissions at industrial sites. In particular we have focused our efforts in generating models that can simulate the wind flow and dispersion of airborne pollutants around surface-mounted structures such as buildings or building complexes. The calculational procedure that has been chosen consists of two sequential steps, namely: (i) Prediction of the mean flow via a turbulent flow model; and, (ii) Employment of the calculated flow field to drive a particle-in-cell transport and diffusion model. A benchmark simulation is performed in which numerical results from the flow model are compared with other numerical models and with experimental data for flow over a backward-facing step. We also present results from three-dimensional simulations of flow and dispersion over a two-building complex.

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