Experimental Research of Heat Fluxes in Wind Tunnels and Shock Tubes

The article describes the methods and results of the study of heat transfer in a wind tunnel and shock tubes in the presence of shock waves. In the first case, the research is carried out using a thermal imager and infrared observation windows, which allow us to determine the patterns of heat transfer on the inner walls of the wind tunnel. The study is carried out for the Mach number 2.48 and the turbulent flow regime. The shock wave is created using a plane wedge mounted on the upper wall of the setup test section. A high-speed thermoelectric detector with a resolution of up to 1 microsecond is used to study heat fluxes in the shock tubes. The experiments are carried out on two diaphragm-type shock tubes at the postshock Mach number of 15.