Flow Analysis of an Atmosphere Reentry Vehicle

–The main thrust of the paper is the evaluation of the aero thermodynamic analysis of reentry trajectory. Computational fluid-dynamics results are presented to show the flow field around a blunted cone-flare in hypersonic flow. This is of particularly interest since it features the hypersonic flow around planetary re entry vehicles, the reason between the cone and the flare is particularly critical with respect to the evaluation of the surface heat flux. Indeed, flow separation is induced by the shock wave boundary layer interaction, with subsequent flow re attachment, that can dramatically enhance the surface heat transfer. The exact determination of the extension of the recirculation zone is particularly delicate task for numerical codes. A numerical approach has been adopted to study the flow field that develops around the EXPERTS capsule. Laminar flow computations have been carried out using a full NaviesStokes solver, with free stream condition with two different Mack numbers. Model created in CATIA, and meshing in GHAMBIT 2.4.6 finally solution is by FLUENT 6.3 solver. Keywords––Re-entry vehicle, Hyper sonic flow, Heat flux, Navies strokes formula, Laminar flow.