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Direct numerical simulation of the interaction between a shock wave and anisotropic turbulence

Jamme, Stéphane and Crespo, Matthieu and Chassaing, Patrick Direct numerical simulation of the interaction between a shock wave and anisotropic turbulence. (2005) In: 35th AIAA Fluid Dynamics Conference and Exhibit, 06-09 June 2005, Toronto, Canada .

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Abstract

Direct Numerical Simulations of the interaction between a shock wave at Mach 1.5 and several anisotropic turbulent fields are described and compared to the isotropic reference case. The various anisotropic turbulent fields considered upstream of the shock are of axisymetric type. The amount of the longitudinal normal Reynolds stress component is found to drive the evolution of the kinetic energy in the near field behind the shock wave as well as the modification of the anisotropic state across the shock. No new fundamental mechanism is found compared to the isotropic situation. Further insight is however provided concerning the near field evolution of the turbulent kinetic energy where two different zones have to be distinguished. Length scales evolutions are also considered and the dissipation length scale is found to behave in a radically different way than the integral scale.

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
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Deposited By: Stéphane Jamme
Deposited On:28 Nov 2008 15:31

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