Author:
LLOR ANTOINE,BAILLY PASCAL
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.
Subject
Electrical and Electronic Engineering,Condensed Matter Physics,Atomic and Molecular Physics, and Optics
Reference14 articles.
1. Hanjalic, K. , & Launder, B.E. (1972)A Reynolds stress model of turbulence and its application to thinshear flows.J. Fluid Mech. 52,609–638.
2. Llor, A. (2002).Response of turbulent RANS models to self-similar variableacceleration RT mixing: An analytical “0D” analysis. InProc. Eighth Int. Workshop on the Physics of Compressible TurbulentMixing ( Schilling, O. , Ed.),Report UCRL-MI-146350.Livermore, CA:Lawrence Livermore National Laboratory.
3. Mantel, T. (1993).Contribution à la modélisation de la combustion dansles moteurs à allumage commandé avec prise en compte dela phase d'allumage.Ph.D. thesis,Université de Rouen,France.
4. Dimonte, G. , & Schneider, M. (2000)Density ratio dependence of Rayleigh–Taylor mixing forsustained and impulsive acceleration histories.Phys. Fluids. 12,304–321.
5. Youngs, D.L. (1989)Modelling turbulent mixing by Rayleigh–Taylor instability.Physica D 37,270–287.
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