Evaluation of RANS and LES turbulence models for simulating a steady 2-D plane wall jet

Purpose This article examined various turbulence models for numerical simulation of a steady, two-dimensional (2-D) plane wall jet without co-flow using commercial CFD software (ANSYS FLUENT 14.5). The purpose of this paper is to decide the most suitable and most economical method for steady, 2-D plane wall jet simulation. Design/methodology/approach Seven Reynolds-Averaged Navier-Stokes (RANS) turbulence models were evaluated with respect to typical jet scaling parameters such as the jet half-height and the decay of maximum jet velocity, as well as coefficients from the law of the wall and for skin friction. Then, a plane wall jet issuing from a rectangular slot of 1:6 aspect ratio located adjacent to the wall, was investigated in a 3-D model using large eddy simulation (LES) and the Stress-omega Reynolds stress model (SWRSM), with the results compared to experimental measurements. Findings The comparisons of these simulated flow characteristics indicated that the SWRSM was the best of the seven RANS mod...