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Conference Papers Year : 1999

Compressibility effects on shock-turbulence interaction

Abstract

Direct numerical simulation (DNS) and inviscid linear analysis (LIA) are used to study the interaction of a normal Mach 1.5 shock wave and isotropic turbulence. The influence of the nature of the incoming turbulence on the interaction is emphasized. The presence of upstream entropy fluctuations enhance the amplification of the turbulent kinetic energy and transverse vorticity variance across the shock compared to the solenoidal (pure vorticity) case. More reduction of the transverse Taylor microscale is also observed in the vorticity-entropy case while no influence can be seen on the longitudinal microscale. When acoustic and vortical fluctuations are associated upstream, less amplification of the turbulent kinetic energy, less reduction of the transverse microscale and more amplification of the transverse vorticity variance are observed through the discontinuity. All the DNS results are in good qualitative agreement with LIA.
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Dates and versions

hal-04039732 , version 1 (21-03-2023)

Identifiers

  • HAL Id : hal-04039732 , version 1
  • OATAO : 671

Cite

Stéphane Jamme, Florence Torres, Jean-Bernard Cazalbou, Patrick Chassaing. Compressibility effects on shock-turbulence interaction. 1st International Symposium on Turbulence and Shear Flow Phenomena (TSFP1), Sep 1999, Santa Barbara, United States. pp.1091-1096. ⟨hal-04039732⟩
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