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- W4301101306 abstract "The purpose of this paper is to give an overview in the realm of numerical computations of polydispersed turbulent two-phase flows, using a mean-field/PDF approach. In this approach, the numerical solution is obtained by resorting to a hybrid method where the mean fluid properties are computed by solving mean-field (RANS) equations with a classical finite volume procedure whereas the local instantaneous properties of the particles are determined by solving stochastic differential equations (SDEs). The fundamentals of the general formalism are recalled and particular attention is focused on a specific theoretical issue: the treatment of the multiscale character of the dynamics of the discrete particles, that is the consistency of the system of SDEs in asymptotic cases. Then, the main lines of the particle/mesh algorithm are given and some specific problems, related to the integration of the SDEs, are discussed, for example, issues related to the specificity of the treatment of the averaging and projection operators, the time integration of the SDEs (weak numerical schemes consistent with all asymptotic cases), and the computation of the source terms. Practical simulations, for three different flows, are performed in order to demonstrate the ability of both the models and the numerics to cope with the stringent specificities of polydispersed turbulent two-phase flows." @default.
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- W4301101306 date "2010-09-19" @default.
- W4301101306 modified "2023-10-18" @default.
- W4301101306 title "Mean-field/PDF numerical approach for polydispersed turbulent two-phase flows" @default.
- W4301101306 doi "https://doi.org/10.48550/arxiv.1009.3631" @default.
- W4301101306 hasPublicationYear "2010" @default.
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