A study on dependence of reverse simulation for identifying pollutant source on grid resolution

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  • 拡散源特定に向けたリバースシミュレーションにおける格子解像度依存性
  • カクサン ゲン トクテイ ニ ムケタ リバースシミュレーション ニ オケル コウシ カイゾウド イソンセイ

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Abstract

When hazardous substance is diffused, it is necessary to identify pollutant source immediately. Reverse simulation, which is the solution of the transport equation in negative time, is useful method for identifying pollutant source with CFD. Then the negative diffusion simplifies dispersive errors and reverse simulation cannot be carried out. We introduced a method to improving numerical instability. In this paper, we introduce reverse simulation result in cavity flow and survey the dependence of reverse simulation accuracy on grid resolution and filter width.

Journal

  • SEISAN KENKYU

    SEISAN KENKYU 63 (1), 31-36, 2011

    Institute of Industrial Science The University of Tokyo

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