On the Influence of the Reynolds-Stress Anisotro y Tensor on thePrediction of Wall-Affected Three-Dimensional Room airflows

It is well known that the turbulence anisotropyhas a remarkable influence on the flow of threedimensional wall jets. So the accuratesimulation of room airflows with air suppliesmounted just below the ceiling requires a highlevelturbulence closure.Therefore in this paper the potential for theimprovement of room airflow prediction byusing different Reynolds stress models and anew nonlinear eddy viscosity turbulence modelare discussed. For this purpose detailed threedimensional PIV measurement results of thevelocity distribution and the Reynolds stress in asymmetrical model room are compared with thecalculations using different turbulence models.