Experimental and numerical investigations on unsteady aerodynamic heating in shock reflections have been performed. In the experiments surface heat flux changes induced by unsteady shock reflections have been measured. Remarkable characteristics of surface heat transfer change are observed. Two peak heatings due to a Mach stem and a slip layer are observed in complex Mach reflection and double Mach reflection. Numerical simulations of unsteady shock reflections by a ramp have also been conducted. An orthogonal curvilinear grid system generated by conformal mapping is used. The two-dimensional Euler equations and thin-layered Navier-Strokes equations are solved numerically by a TVD scheme in order to simulate unsteady shock reflections and unsteady aerodynamic heating by shock reflections. The calculations have been carried out for various shock reflections. The results show good agreement with the present experiments. The detailed flow structure and parametric change of shape of the slip layer with incident shock Mach number are simulated correctly. Also the calculated peak heatings due to a Mach stem and a slip layer by the impingement of slip layer shows good agreement with experiments.
|Number of pages||14|
|Journal||Memoirs of the Kyushu University, Faculty of Engineering|
|Publication status||Published - Sep 1 1990|
All Science Journal Classification (ASJC) codes
- Atmospheric Science
- Earth and Planetary Sciences(all)
- Management of Technology and Innovation