Turbulence alteration due to shock motion

Abstract

Physical and computational models are provided for three cases of shock motion-turbulence interaction: (1) the production of velocity fluctuations due to shock oscillations; (2) eddy alteration due to transient eddy shocklets; and (3) eddy production due to transient shock-entropy spottiness interactions. Shock motions are shown to be efficient in converting mean flow energy into fluctuation energy, and high-frequency induced shock motions produce intense vorticity fields from the incident mean flow. The effects of transient eddy shocklets created by subsonic eddy motion in a supersonic stream are discussed in detail.