Accurate void fraction calculation for three-dimensional discrete particle model on unstructured mesh

C. L. Wu; J. M. Zhan; Y. S. Li; K. S. Lam; A. S. Berrouk

doi:10.1016/j.ces.2008.11.014

Accurate void fraction calculation for three-dimensional discrete particle model on unstructured mesh

C. L. Wu, J. M. Zhan, Y. S. Li, K. S. Lam, A. S. Berrouk

Mechanical & Nuclear Engineering

Research output: Contribution to journal › Article › peer-review

58 Scopus citations

Abstract

An accurate and efficient analytical method for computing the three-dimensional local void fraction is proposed in the context of discrete particle modeling. It is developed for the general case of unstructured meshes whose use is unavoidable to efficiently simulate modern gas-solid fluidized bed reactors characterized by complex geometries. The method relates the three-dimensional void fraction to several geometrical parameters. This allows the exact voidage evaluation for the frequently occurring case of having particles not wholly contained within one grid cell regardless its shape. Failing to accurately account for these common particle configurations in dense gas-particle systems has proven detrimental to the accuracy of their simulations.

Original language	British English
Pages (from-to)	1260-1266
Number of pages	7
Journal	Chemical Engineering Science
Volume	64
Issue number	6
DOIs	https://doi.org/10.1016/j.ces.2008.11.014
State	Published - 16 Mar 2009

Keywords

Discrete particle model
Fluidization
Multiphase flow
Unstructured mesh
Voidage

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10.1016/j.ces.2008.11.014

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AU - Wu, C. L.

AU - Zhan, J. M.

AU - Li, Y. S.

AU - Lam, K. S.

AU - Berrouk, A. S.

PY - 2009/3/16

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AB - An accurate and efficient analytical method for computing the three-dimensional local void fraction is proposed in the context of discrete particle modeling. It is developed for the general case of unstructured meshes whose use is unavoidable to efficiently simulate modern gas-solid fluidized bed reactors characterized by complex geometries. The method relates the three-dimensional void fraction to several geometrical parameters. This allows the exact voidage evaluation for the frequently occurring case of having particles not wholly contained within one grid cell regardless its shape. Failing to accurately account for these common particle configurations in dense gas-particle systems has proven detrimental to the accuracy of their simulations.

KW - Discrete particle model

KW - Fluidization

KW - Multiphase flow

KW - Unstructured mesh

KW - Voidage

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Accurate void fraction calculation for three-dimensional discrete particle model on unstructured mesh

Abstract

Keywords

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