# Extending the Langevin model to variable-density pressure-gradient-driven turbulence

@article{Bakosi2011ExtendingTL, title={Extending the Langevin model to variable-density pressure-gradient-driven turbulence}, author={J{\'o}zsef Bakosi and J. Raymond Ristorcelli}, journal={Journal of Turbulence}, year={2011} }

We extend the generalized Langevin model (D.C. Haworth and S.B. Pope, A generalized Langevin model for turbulent flows, Phys. Fluids 29 (1986) p. 387), originally developed for the Lagrangian fluid particle velocity in constant-density shear-driven turbulence, to variable-density (VD) pressure-gradient-driven flows. VD effects due to nonuniform mass concentrations (e.g. mixing of different species) are considered. In the extended model, large density fluctuations leading to large differential…

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