Application of periodic boundary conditions to CFD-DEM simulation of gas-solid flow in pneumatic conveying

Shibo Kuang, Ke Li, Ruiping Zou, Renhu Pan, Aibing Yu

Research output: Contribution to journalArticleResearchpeer-review

Abstract

This paper presents a numerical study of horizontal pneumatic conveying by the combined approach of computational fluid dynamics (CFD) and discrete element method (DEM), with special reference to the use of periodic boundary condition (PBC) for computational efficiency. A new iterative method is proposed to generally control the solid flowrate simulated in a CFD-DEM model with PBC. The characteristics of the flows in the start-up section are analyzed in detail and compared with those in the well-developed flow section for different flow regimes. On this basis, two semi-theoretical correlations are formulated to respectively predict the start-up section length and the relation between particle number and solid flowrate. The applicability of PBC to the CFD-DEM modeling of pneumatic conveying, as well as the two correlations, is verified by comparing the measured and calculated results under different conditions.
Original languageEnglish
Pages (from-to)214 - 228
Number of pages15
JournalChemical Engineering Science
Volume93
DOIs
Publication statusPublished - 2013
Externally publishedYes

Cite this

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title = "Application of periodic boundary conditions to CFD-DEM simulation of gas-solid flow in pneumatic conveying",
abstract = "This paper presents a numerical study of horizontal pneumatic conveying by the combined approach of computational fluid dynamics (CFD) and discrete element method (DEM), with special reference to the use of periodic boundary condition (PBC) for computational efficiency. A new iterative method is proposed to generally control the solid flowrate simulated in a CFD-DEM model with PBC. The characteristics of the flows in the start-up section are analyzed in detail and compared with those in the well-developed flow section for different flow regimes. On this basis, two semi-theoretical correlations are formulated to respectively predict the start-up section length and the relation between particle number and solid flowrate. The applicability of PBC to the CFD-DEM modeling of pneumatic conveying, as well as the two correlations, is verified by comparing the measured and calculated results under different conditions.",
author = "Shibo Kuang and Ke Li and Ruiping Zou and Renhu Pan and Aibing Yu",
year = "2013",
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pages = "214 -- 228",
journal = "Chemical Engineering Science",
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Application of periodic boundary conditions to CFD-DEM simulation of gas-solid flow in pneumatic conveying. / Kuang, Shibo; Li, Ke; Zou, Ruiping; Pan, Renhu; Yu, Aibing.

In: Chemical Engineering Science, Vol. 93, 2013, p. 214 - 228.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Application of periodic boundary conditions to CFD-DEM simulation of gas-solid flow in pneumatic conveying

AU - Kuang, Shibo

AU - Li, Ke

AU - Zou, Ruiping

AU - Pan, Renhu

AU - Yu, Aibing

PY - 2013

Y1 - 2013

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AB - This paper presents a numerical study of horizontal pneumatic conveying by the combined approach of computational fluid dynamics (CFD) and discrete element method (DEM), with special reference to the use of periodic boundary condition (PBC) for computational efficiency. A new iterative method is proposed to generally control the solid flowrate simulated in a CFD-DEM model with PBC. The characteristics of the flows in the start-up section are analyzed in detail and compared with those in the well-developed flow section for different flow regimes. On this basis, two semi-theoretical correlations are formulated to respectively predict the start-up section length and the relation between particle number and solid flowrate. The applicability of PBC to the CFD-DEM modeling of pneumatic conveying, as well as the two correlations, is verified by comparing the measured and calculated results under different conditions.

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JO - Chemical Engineering Science

JF - Chemical Engineering Science

SN - 0009-2509

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