SOURCE TERM MODEL FOR STREAMWISE JET VORTEX GENERATOR MODELLING

摘要

In the paper the new method of modeling of Jet Vortex Generators (JVGs) was proposed. Due to the flow structure details generated by JVGs it is required to create fine grids in the vicinity of JVGs, which increase the computational cost. In order to overcome difficulty with generating meshes of the air jet vortex generator at every investigated location the new source term model of air jet vortex generator was proposed. This model works by adding momentum source term to Reynolds-Averaged Navier-Stokes equations in ANSYS Fluent. The model was calibrated with respect to obtain the best circulation plots agreement. The results of numerical calculations of source term model at various grid types- coarse, medium and fine were compared with the wind-tunnel experiment results and its grid-resolved air jet vortex generator computational model. The calculations were performed in the computational domain for flat plate with single vortex generator with the wall boundary condition on surface, where is placed JVG. The circulation, x-vorticity contours and skin-friction coefficient were examined in order to check the effectiveness of air jet vortex generator source term model.