Drag correlation for dilute and moderately dense fluid-particle systems using the lattice Boltzmann method

Rüde U, Bogner S, Mohanty S (2015)


Publication Language: English

Publication Type: Journal article, Original article

Publication year: 2015

Journal

Publisher: Elsevier

Book Volume: 68

Pages Range: 71-79

URI: http://www.sciencedirect.com/science/article/pii/S0301932214001803

DOI: 10.1016/j.ijmultiphaseflow.2014.10.001

Abstract

This paper presents a numerical study of flow through static random assemblies of monodisperse, spherical particles. A lattice Boltzmann approach based on a two relaxation time collision operator is used to obtain reliable predictions of the particle drag by direct numerical simulation. From these predictions a closure law F(Rep,φ) of the drag force relationship to the bed density φ   and the particle Reynolds number Rep is derived. The present study includes densities φ   ranging from 0.01 to 0.35 with Repranging up to 300, that is compiled into a single drag correlation valid for the whole range. The correlation has a more compact expression compared to others previously reported in literature. At low particle densities, the new correlation is close to the widely-used Wen & Yu – correlation.

Recently, there has been reported a discrepancy between results obtained using different numerical methods, namely the comprehensive lattice Boltzmann study of Beetstra et al. (2007) and the predictions based on an immersed boundary – pseudo-spectral Navier–Stokes approach (Tenneti et al., 2011). The present study excludes significant finite resolution effects, which have been suspected to cause the reported deviations, but does not coincide exactly with either of the previous studies. This indicates the need for yet more accurate simulation methods in the future.

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How to cite

APA:

Rüde, U., Bogner, S., & Mohanty, S. (2015). Drag correlation for dilute and moderately dense fluid-particle systems using the lattice Boltzmann method. International Journal of Multiphase Flow, 68, 71-79. https://dx.doi.org/10.1016/j.ijmultiphaseflow.2014.10.001

MLA:

Rüde, Ulrich, Simon Bogner, and Swati Mohanty. "Drag correlation for dilute and moderately dense fluid-particle systems using the lattice Boltzmann method." International Journal of Multiphase Flow 68 (2015): 71-79.

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