Wall Cooling Effects in High-Speed Turbulent Boundary Layers at High Reynolds Number
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Given the renewed interest in sustained supersonic and hypersonic flight, a considerable effort has been recently devoted to a more in-depth understanding of high-speed wall-bounded flows exploiting high-fidelity CFD methods. Numerical simulations typically assume adiabatic conditions at the wall, however cold wall conditions may alter dramatically the flow behavior, because of the relevant temperature gradients induced by aerodynamic heating close to the wall. In this study, we thus present a supersonic, DNS database at high Reynolds number comparing simulations with adiabatic walls and different isothermal, cold wall conditions to assess the relevance of thermal effects in high Reynolds conditions.
