An extensive experimental campaign was carried out to investigate transitional S WBLI atMach5 and Re/m of 15.9 · 10~61/m. An axisymmetric impinging shock that generates 7 degrees flow deflection, resulted in separated SWBLI flowfield on axisymmetric centrebody. Various flow diagnostics were utilised to map the complex flowfield such as schlieren photography, QIRT and PSP and pressure tappings. A nominally laminar (triggered transition) case by flow separation (SWBLI@90mm) and four natural transition cases with varying intermittency (SWBLI@190, 200, 220 and 255mm) were tested. Time-averaged heat transfer peak was found to occur around the reattachment point. For SWBLI@90mm case the separation induces transition and the heat transfer and pressure peaks were found to be the highest. For the cases with natural transition with different intermittency levels, where incoming boundary layer is in state of transition, the magnitude of peaks initially started to increase from SWBLI@ 190mm case reaching a maximum for SWBLI@200mm case. Afterwards the peaks started decreasing towards the highest intermittency case, i.e. SWBLI@255mm.
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