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Les Prediction of Gas Diffusion Near Building Using Dynamic Mixed SGS Model Based on a Composite Grid System

  • A. Mochida
  • Y. Tominaga
  • S. Murakami
Conference paper
  • 321 Downloads
Part of the ERCOFTAC Series book series (ERCO, volume 5)

Abstract

The turbulent diffusion of gaseous contaminant near a building model is predicted by Large Eddy Simulations (LES) using a Dynamic Mixed SGS model (DM model ) with the aid of the composite grid technique. The results using a composite grid show better agreement with the experiment than does the case using a single grid. Some discrepancies from the experimental results are observed in the results of the standard Smagorinsky model (S model) with a composite grid. These discrepancies are reduced remarkably by using the DM model.

Keywords

Large Eddy Simulation Smagorinsky Model Single Grid Switching Parameter Dynamic Smagorinsky Model 
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Copyright information

© Springer Science+Business Media Dordrecht 1997

Authors and Affiliations

  • A. Mochida
    • 1
  • Y. Tominaga
    • 1
  • S. Murakami
    • 2
  1. 1.Niigata Institute of TechnologyNiigataJapan
  2. 2.I.I.S.University of TokyoTokyoJapan

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