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Two and three dimensional CFD models of the effectiveness of an air curtain used to restrict cold room infiltration.

Author(s) : FOSTER A. M., SWAIN M. J., JAMES S. J.

Summary

The aim of this study was to compare the measured effectiveness of an air curtain device at different jet velocities against predictions from 2D and 3D computational fluid dynamics (CFD) models. The predicted maximum effectiveness of the air curtain was 0.13 higher than measured for the 2D model and 0.05 lower than measured for the 2D model. The 2D model under predicted the optimum jet velocity by 7.5 m/s, the 3D model over predicted it by 4 m/s. CFD has shown that the flow from this air curtain cannot be considered as 2D. The central part of the jet is deflected away from the cold store by the Coanda effect caused by the air curtain device's fan body. The edges of the jet are deflected into the cold store by the stack pressures and turn into the void caused by the deflected central jet.

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Pages: ICR07-D1-1238

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Details

  • Original title: Two and three dimensional CFD models of the effectiveness of an air curtain used to restrict cold room infiltration.
  • Record ID : 2008-0295
  • Languages: English
  • Source: ICR 2007. Refrigeration Creates the Future. Proceedings of the 22nd IIR International Congress of Refrigeration.
  • Publication date: 2007/08/21

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