OATAO - Open Archive Toulouse Archive Ouverte Open Access Week

Compressibility effects on shock-turbulence interaction

Jamme, Stéphane and Torres, Florence and Cazalbou, Jean-Bernard and Chassaing, Patrick Compressibility effects on shock-turbulence interaction. (1999) In: 1st International Symposium on Turbulence and Shear Flow Phenomena (TSFP1), 12-15 Sept 1999, Santa Barbara, United States .

[img]
Preview
(Document in English)

PDF (Author's version) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
184Kb

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.

Item Type:Conference or Workshop Item (Paper)
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution: Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
French research institutions > Centre National de la Recherche Scientifique - CNRS
Other partners > Délégation Générale pour l'Armement - DGA (FRANCE)
Laboratory name:
Statistics:download
Deposited By:Stéphane Jamme

Repository Staff Only: item control page