Heat Transfer Measurements of the BOLT II Flight Experiment Model within the T4 Reflected Shock Tunnel

摘要: View Video Presentation: https://doi.org/10.2514/6.2023-0087.vidA 3/8th scale model of the BoLT II hypersonic flight experiment geometry was tested in the T4 Stalker Tube at The University of Queensland. Thin-film heat-transfer gauges were installed at some of the locations where similar instrumentation was used to measure heat-transfer rates in the flight. The freestream Reynolds number was varied at similar total enthalpies and flight Mach number to the flight test. Over the range of conditions tested, the boundary layer on the test surface of the model ranged from laminar to transitional and fully turbulent. The temporal variations of surface heat transfer show intermittent turbulent spots in the transitional regions and the turbulent fluctuations in the fully turbulent regions. The results show how the transition front and extent vary with Reynolds number. Results are also compared with some heat transfer …