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A new turbulent two-field concept for modeling Rayleigh–Taylor, Richtmyer–Meshkov, and Kelvin–Helmholtz mixing layers

Published online by Cambridge University Press:  03 March 2004

ANTOINE LLOR  and
PASCAL BAILLY
ANTOINE LLOR
Affiliation:
Commissariat à l'Energie Atomique, Bruyères le Châtel, France
PASCAL BAILLY
Affiliation:
Commissariat à l'Energie Atomique, Bruyères le Châtel, France
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Abstract

An accurate turbulent mixing model for gravitationally induced instabilities with arbitrarily variable accelerations has been developed to capture the following physical aspects: (1) directed transport, (2) correct buoyancy forces, (3) turbulence diffusion, and (4) geometrical aspects. We present the two-structure two-fluid two-turbulence concept (2SFK), which consistently answers these requirements by identifying the large-scale transport structures in a statistical approach. An example of a 2SFK-based model is given and applied to the Rayleigh–Taylor case.

Keywords

Mixing instabilitiesRayleigh–TaylorRichtmyer–MeshkovSelf-similar flowsTurbulence modelingTwo-fluid flows
Type
Research Article
Information
Laser and Particle Beams , Volume 21 , Issue 3 , July 2003 , pp. 311 - 315
Copyright
© 2003 Cambridge University Press

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References

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