Title: Numerical simulations of a confined channel flow driven by non-isothermal wall injection

Authors: C. Fournier, M. Michard, F. Bataille

Addresses: Centre de Thermique de Lyon, UMR CNRS 5008, INSA de Lyon, Bat. Sadi Carnot, 20 av. Albert Einstein, 69621 Villeurbanne Cedex, France. ' Centre de Thermique de Lyon, UMR CNRS 5008, INSA de Lyon, Bat. Sadi Carnot, 20 av. Albert Einstein, 69621 Villeurbanne Cedex, France. ' Centre de Thermique de Lyon, UMR CNRS 5008, INSA de Lyon, Bat. Sadi Carnot, 20 av. Albert Einstein, 69621 Villeurbanne Cedex, France

Abstract: The velocity and temperature fields of a confined channel flow driven by air injection through a porous wall are numerically investigated. The equations of the problem are modelled using a RNG k – ε and a RSM model. Furthermore, two models of blowing (sources model and holes model) are used. Results show a sudden increase of the velocity fluctuations which affect the mean velocity and temperature profiles. The two blowing models are compared, showing similar results even through the discrete nature of one of the model is visible. Finally, the effects of turbulence in the injected fluid are investigated.

Keywords: non-isothermal blowing; numerical simulations; RANS models; CFD; computational fluid dynamics; turbulent flows; confined channel flows.

DOI: 10.1504/PCFD.2006.009490

Progress in Computational Fluid Dynamics, An International Journal, 2006 Vol.6 No.1/2/3, pp.129 - 136

Published online: 05 Apr 2006 *

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