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Numerical simulation of displacement ventilation.

Numerische Simulation von Quellluftsystemen.

Author(s) : KRIEGEL M., MÜLLER D.

Type of article: Article

Summary

Computer Fluid Dynamics (CFD) Analysis for predicting indoor air environment are increasingly used. Although it is possible to calculate the flow dominating effects of displacement ventilation - natural and mixed convection, wall-bounded flow and free-stream regions - with different two-equation turbulence models, it is still difficult to predict a displacement ventilation system with only one set of parameters for a standard two-equation turbulence model. This article presents an extension of a two-equation turbulence model to predict the air flow for displacement ventilation systems. Firstly, each flow effect is investigated separately. Secondly, CFD-analysis of a test room is compared with full-scale measurements. The modified two-equation turbulence model leads to good agreement of the measurements and the calculations.

Details

  • Original title: Numerische Simulation von Quellluftsystemen.
  • Record ID : 2005-2738
  • Languages: German
  • Source: KI Luft Kältetech. - vol. 40 - n. 12
  • Publication date: 2004/12

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