Abstract
The effects of compressibility and nonequilibrium in hypersonic turbulent flows are analyzed in the κ-e-based modeling framework with emphasis on the influence of factors such as streamline curvature and shock discontinuities. The flow past a projectile, with and without a drag reduction spike, is investigated to assess the various modeling issues and to shed light on the merit of this interesting aerodynamic concept. The importance of an account for the compressibility and nonequilibrium effects is demonstrated. Regarding the merit of the spike/aerodisk assembly, it is observed that although the addition of the spike reduces the pressure at the nose of the projectile by a factor of 10 it only results in a marginal reduction in the temperature
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