4.4 Article

Stochastic model for the hydrodynamic force in Euler-Lagrange simulations of particle-laden flows

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Particle-resolved simulation of freely evolving particle suspensions: Flow physics and modeling

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Summary: This study aims to understand the dynamics of freely evolving particle suspensions across a wide range of particle-to-fluid density ratios, quantifying the average drag force and proposing a correlation for interphase drag force in terms of volume fraction, Reynolds number, and density ratio. The study shows that the effects of particle velocity fluctuations, particle clustering, and particle mobility can impact the drag of freely evolving suspensions in various ways, and highlights the interdependence of particle clustering and particle velocity fluctuations. Two different approaches were used to develop the drag correlation, which can be utilized in computational fluid dynamics simulations to predict overall flow behavior accurately.

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