Porous Bleed Boundary Conditions for Supersonic Flows with & without Shock-Boundary Layer Interaction

Abstract

In this paper, several existing porous bleed models are implemented intothe in-house RANS-solver elsA, and their performance are evaluated ontwo different flow cases. Reference simulations are performed to evalu-ate the accuracy of the applied bleed models and to show the lack ofmodeling different plate geometries. The models significantly differ inpredicting the bleed mass flux along the plate. For the turbulent super-sonic boundary layer bleeding, the reference simulations demonstrate ahole diameter influence on the flow, but none of the models considersthis effect. The model of Slater fits well with the reference simulationby applying it to its extracted data. However, applying the bleed mod-els as a boundary condition results in more significant deviations fromthe reference simulation, leading to an overestimation of the wall shearstress and fuller boundary layer profiles downstream of the bleed region.Additionally, in the second flow case, including the shock-boundary layerinteraction, the effect of the porous bleed is overestimated. No modelis found suitable for a shock-boundary layer interaction control, andessential parameters such as the bleed hole diameter are not considered.