Acoustic-wave-induced cooling in onset of hypersonic turbulence
Acoustic-wave-induced cooling in onset of hypersonic turbulence
We report a newly identified aerodynamic cooling mechanism in the onset of hypersonic wall-bounded turbulence. We first experimentally investigated a flared cone with a smooth surface in a Ma 6 wind tunnel using fast-response pressure sensors, Rayleigh scattering flow visualization, and infrared thermography, which confirmed a cooled region (denoted as …