Preliminary study on the influence of in situ filter size in CFD-DEM transfer kernel--颗粒学报PARTICUOLOGY

Fullmer, W. D., & Musser, J. (2020). Preliminary study on the influence of in situ filter size in CFD-DEM transfer kernel. Particuology, 51, 205-209. https://doi.org/10.1016/j.partic.2019.11.001

Preliminary study on the influence of in situ filter size in CFD-DEM transfer kernel

William D. Fullmer ^{a b *}, Jordan Musser ^a

a National Energy Technology Laboratory, Morgantown, WV 26507, USA
b Leidos Research Support Team, Morgantown, WV 26507, USA

10.1016/j.partic.2019.11.001

Volume 51, August 2020, Pages 205-209

Received 30 September 2019, Revised 5 November 2019, Accepted 6 November 2019, Available online 20 December 2019, Version of Record 11 April 2020.

E-mail: william.fullmer@netl.doe.gov

Highlights

• CFD-DEM solutions were shown to depend on the in-situ filter size of the E‒L transfer kernel.

• Global particle quantities of interest decay away from the DNS values with increasing filter size.

• A significant statistical uncertainty exists which obscures the determination of an optimal size.

• Preliminary study indicates the filter size should be in the range of 2.5–6 particle diameters.

Abstract

An unknown in coupled Eulerian‒Lagrangian models for particle flow, such as CFD-DEM, which has received fairly little attention in the literature to date is the size of the filter width in the transfer kernel. This work provides a preliminary glimpse at how this parameter can influence the solution in cold-flow, unbounded fluidization. Comparison to previously published direct numerical simulation data is used to suggest an appropriate range for this parameter.

Graphical abstract

Keywords

CFD-DEM; High-resolution; Lagrangian‒Eulerian kernel

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