Heat fluxes measurement on the shocktube wall

In this paper we carried out experimental study of a heat flux on the shocktube surface during passage of shock wave using a gradient sensor based on bismuth single crystal. The obtained experimental data were compared with numerical simulation results. It is shown that after passing through contact surface that separating the hot “plug” and pushing gas, the colder gas flow is mixed with the hot one. The heat transfer on the contact surface was evaluated.