On large eddy simulation of particle laden flow: taking advantage of spectral properties of interpolation schemes for modeling SGS effects
Part of the
book series (ERCO, volume 15)
This contribution deals with Large-Eddy simulation (LES) of particle-laden flow. State of the art methods are capable to predict the dynamics of small particles in dilute suspensions as long as direct numerical simulation (DNS) is possible. However, as soon as the Reynolds number is too high, DNS is not an alternative and often LES is the method of choice. For LES of particle-laden flow, the effect of the unresolved subgrid scales (SGS) needs to be modeled, a least for small or moderate Stokes numbers of the particles. This means that two turbulence models are necessary. One model for SGS effects on the resolved scales of the carrier fluid flow (such as the Smagorinsky model) and another model for SGS effects on the particle dynamics. Hereinafter, the former type of models is refered to as fluid-LES models and the latter type as particle-LES models.
KeywordsDirect Numerical Simulation Interpolation Scheme Isotropic Turbulence Smagorinsky Model Target Spectrum
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