Use of a RSM Turbulence Model for the Prediction of Velocity and Temperature Fields in a Mechanically Ventilated Room

Full-scale experimental and computational fluid dynamics (CFD) methods were used to investigate the velocity and temperature fields in a mechanically ventilated room. Detailed airflow fields were measured in three cases of ventilation air temperature: an isothermal case, a hot case and a cold case. The ventilation system created a round jet which developed near the ceiling. The experimental data were used to test two turbulence models: a first order k-e turbulence model and a second order RSM turbulence model. The RSM model predicted the temperature and velocity fields better than the k-e turbulence model. In particular, experimental global values of velocity and temperature were in good agreement with the RSM turbulence model. This model is recommended for simulation of ventilated enclosures with thermal effects.