CFD simulation of dilute-phase pneumatic conveying of powders

Zhen Miao, Shibo Kuang, Habib Zughbi, Aibing Yu

Research output: Contribution to journalArticleResearchpeer-review

Abstract

A comprehensive validated numerical model simulating the pneumatic transport of fine particles through various geometries has been developed using Computational Fluid Dynamics (CFD). The prediction reliability of the model was tested over a range of operational conditions, geometry layouts and particle size distributions (PSD). Simulation results have shown a reasonable agreement with published experimental data. The achieved results indicate that this CFD model has an extensive applicability for different geometries when an alternative recently developed drag force correlation is used. Furthermore, the effect of PSD was introduced in the validated model to gain a better understanding of particle motions during conveying. The CFD model with PSD also provided reliable results in various geometries. Numerical results reveal completely different particle size distributions in horizontal and vertical pneumatic conveying. Moreover, the formation and disintegration of particle ropes are both found to be controlled mainly by the behavior of large particles during transportation in a horizontal-bend-vertical pipeline.

Original languageEnglish
Pages (from-to)70-83
Number of pages14
JournalPowder Technology
Volume349
DOIs
Publication statusPublished - 1 May 2019

Keywords

  • CFD
  • Dilute-phase
  • Drag correlation
  • Fine particles
  • Particle size distribution
  • Pneumatic conveying

Cite this

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title = "CFD simulation of dilute-phase pneumatic conveying of powders",
abstract = "A comprehensive validated numerical model simulating the pneumatic transport of fine particles through various geometries has been developed using Computational Fluid Dynamics (CFD). The prediction reliability of the model was tested over a range of operational conditions, geometry layouts and particle size distributions (PSD). Simulation results have shown a reasonable agreement with published experimental data. The achieved results indicate that this CFD model has an extensive applicability for different geometries when an alternative recently developed drag force correlation is used. Furthermore, the effect of PSD was introduced in the validated model to gain a better understanding of particle motions during conveying. The CFD model with PSD also provided reliable results in various geometries. Numerical results reveal completely different particle size distributions in horizontal and vertical pneumatic conveying. Moreover, the formation and disintegration of particle ropes are both found to be controlled mainly by the behavior of large particles during transportation in a horizontal-bend-vertical pipeline.",
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CFD simulation of dilute-phase pneumatic conveying of powders. / Miao, Zhen; Kuang, Shibo; Zughbi, Habib; Yu, Aibing.

In: Powder Technology, Vol. 349, 01.05.2019, p. 70-83.

Research output: Contribution to journalArticleResearchpeer-review

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AU - Miao, Zhen

AU - Kuang, Shibo

AU - Zughbi, Habib

AU - Yu, Aibing

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AB - A comprehensive validated numerical model simulating the pneumatic transport of fine particles through various geometries has been developed using Computational Fluid Dynamics (CFD). The prediction reliability of the model was tested over a range of operational conditions, geometry layouts and particle size distributions (PSD). Simulation results have shown a reasonable agreement with published experimental data. The achieved results indicate that this CFD model has an extensive applicability for different geometries when an alternative recently developed drag force correlation is used. Furthermore, the effect of PSD was introduced in the validated model to gain a better understanding of particle motions during conveying. The CFD model with PSD also provided reliable results in various geometries. Numerical results reveal completely different particle size distributions in horizontal and vertical pneumatic conveying. Moreover, the formation and disintegration of particle ropes are both found to be controlled mainly by the behavior of large particles during transportation in a horizontal-bend-vertical pipeline.

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