A second order turbulence model for the prediction of air movement and heat transfer in a ventilated room |
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Authors: | Frédéric Kuznik Gilles Rusaouen Jean Brau |
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Affiliation: | (1) Thermal Sciences Center of Lyon, UMR 5008, CNRS, INSA-Lyon, Université Lyon 1, Bat. Freyssinet, 20 rue de la Physique, 69100 Villeurbanne, France |
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Abstract: | A full-scale test room is used to investigate experimentally and numerically the velocity and temperature fields in the case
of a mechanical ventilation. Detailed fields are measured for three cases of ventilation air temperature: an isothermal case,
a hot case, and a cold case. The experimental data are used to test two turbulence models: a first order k-ε realizable turbulence model and a second order quadratic RSM (Reynolds Stress Model) turbulence model. The RSM model predicts
the temperature and velocity fields better than the k-ε turbulence model. In particular, global values of velocity and temperature coming from experiments are in good agreement
with the RSM turbulence model. This conclusion is confirmed using a turbulence analysis based on Lumley triangles. |
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Keywords: | building room full-scale experiment CFD ventilation turbulence models |
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