Experimental and numerical study of a mechanically ventilated enclosure with thermal effects

For the investigation of the velocity and temperature fields in a mechanically ventilated enclosure, a full-scale experimental and CFD methods are used. The detailed airflow characteristics have been measured in three cases of ventilation air temperature : an isothermal case, a hot case and a cold case. Two CFD models have been validated a RANS modelling and a LES modelling. The first one provides results in better agreement with experimental data except for the cold case, whereas the second one underestimates the expansion of the jet in the three cases.