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INFLUENCE OF THREE-DIMENSIONAL PERTURBATIONS ON HEAT TRANSFER AT HYPERSONIC FLOW

DOI: 10.1615/ICHMT.2012.CHT-12.380
pages 619-629

Ivan Vladimirovich Egorov
Central Aerohydrodynamic Institute (TsAGI), 1, Zhukovsky Str., Zhukovsky, Moscow Region, 140180, Russian Federation

Vladimir Viktorovich Shvedchenko
Central Aerohydrodynamic Institute (TsAGI) , Zhukovsky, Moscow region, Russia

Resumo

The present paper deals with the investigation of the three-dimensional flow in a shock layer at supersonic transverse flow conditions over the front surface of a cylinder under small, spatially-periodic perturbations along the transverse coordinate. Based on the numerical solution of the unsteady three-dimensional Navier-Stokes equations, it is shown that the small imposed perturbations of the free stream velocity (0.5 − 3 %) along the transverse coordinate lead to shock front curvature, to the formation of vortex structures in the shock wave area and to the formation of significant perturbations of the heat flux on the surface.

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