Effect of wall temperature in streamwise supersonic corner flow

The interaction between corner flow and heat transfer is very common in the internal and external flow of hypersonic vehicle surface, but it is not clear how the wall thermal boundary condition affects the supersonic corner flow boundary layer. In the present study, the Reynolds stress model is used to solve the Reynolds-averaged Navier-Stokes equations. The results show that when the symmetrical wall temperature T w is less than or equal to the recovery temperature T aw, the mean velocity profile in the corner zone is similar to the plate zone, and the temperature is higher in the corner zone. At heating wall condition of T w > T aw, both velocity and temperature profile of outer corner boundary layer are different from that in the plate zone. The near-wall temperature distribution increases relatively, and the temperature profile is no longer similar to the law of the wall when T w rises. Along the spanwise wall, the deviation of the velocity-temperature quadratic curve and the generalized Reynolds analogy (GRA) relation is within 10%. In the supersonic corner flow, the velocity-temperature relation under non-adiabatic wall condition satisfies the GRA relation. The effect of wall temperature on corner boundary layer velocity and temperature is significant. It is necessary to consider wall thermal boundary condition in the supersonic corner flow boundary layer analysis.

Automated summary

The study investigates the impact of wall thermal boundary conditions on the supersonic corner flow boundary layer. The results show that at lower wall temperatures, the velocity profile in the corner zone is similar to the plate zone, but the temperature is higher. However, at higher wall temperatures, both velocity and temperature profiles in the corner zone differ from the plate zone. The effect of wall temperature on the velocity and temperature of the corner boundary layer is significant.