A Comparative Study of Models for Heat Transfer in Bidisperse Gas–Solid Systems via CFD–DEM Simulations

Huang, Zheqing; Huang, Qi; Yu, Yaxiong; Li, Yu; Zhou, Qiang

doi:10.3390/axioms11040179

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A Comparative Study of Models for Heat Transfer in Bidisperse Gas–Solid Systems via CFD–DEM Simulations

by

Zheqing Huang

^1,2,3,

Qi Huang

^1,2,3,

Yaxiong Yu

^1,2,3

,

Yu Li

^1,2,3 and

Qiang Zhou

^1,2,3,*

¹

School of Chemical Engineering and Technology, Xi’an Jiaotong University, Xi’an 710049, China

²

Shaanxi Key Laboratory of Energy Chemical Process Intensification, Xi’an Jiaotong University, Xi’an 710049, China

³

Engineering Research Center of New Energy System Engineering and Equipment, University of Shaanxi Province, Xi’an 710049, China

^*

Author to whom correspondence should be addressed.

Axioms 2022, 11(4), 179; https://doi.org/10.3390/axioms11040179

Submission received: 28 February 2022 / Revised: 10 April 2022 / Accepted: 11 April 2022 / Published: 15 April 2022

(This article belongs to the Special Issue Computational Heat Transfer and Fluid Dynamics)

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Abstract

In this study, flow and heat transfers in bidisperse gas–solid systems were numerically investigated using the computational fluid dynamics–discrete element method (CFD–DEM). Three different models to close the gas–solid heat transfer coefficient for each species of bidisperse systems were compared in the simulations. The effect of the particle diameter ratio and particle number ratio between large and small particles on the particle mean temperature and temperature distribution of each species were systematically investigated. The simulation results show that differences in the particle mean temperature and temperature distribution profiles exist among the three heat transfer models at a higher particle number ratio. The differences between the effects of three heat transfer models on heat transfer properties in bidisperse systems with particle diameter ratios of up to 4 are marginal when the particle number ratio between small and large particles is 1.

Keywords: heat transfer; bidisperse gas–solid systems; computational fluid dynamics–discrete element method; particle mean temperature

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MDPI and ACS Style

Huang, Z.; Huang, Q.; Yu, Y.; Li, Y.; Zhou, Q. A Comparative Study of Models for Heat Transfer in Bidisperse Gas–Solid Systems via CFD–DEM Simulations. Axioms 2022, 11, 179. https://doi.org/10.3390/axioms11040179

AMA Style

Huang Z, Huang Q, Yu Y, Li Y, Zhou Q. A Comparative Study of Models for Heat Transfer in Bidisperse Gas–Solid Systems via CFD–DEM Simulations. Axioms. 2022; 11(4):179. https://doi.org/10.3390/axioms11040179

Chicago/Turabian Style

Huang, Zheqing, Qi Huang, Yaxiong Yu, Yu Li, and Qiang Zhou. 2022. "A Comparative Study of Models for Heat Transfer in Bidisperse Gas–Solid Systems via CFD–DEM Simulations" Axioms 11, no. 4: 179. https://doi.org/10.3390/axioms11040179

APA Style

Huang, Z., Huang, Q., Yu, Y., Li, Y., & Zhou, Q. (2022). A Comparative Study of Models for Heat Transfer in Bidisperse Gas–Solid Systems via CFD–DEM Simulations. Axioms, 11(4), 179. https://doi.org/10.3390/axioms11040179

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A Comparative Study of Models for Heat Transfer in Bidisperse Gas–Solid Systems via CFD–DEM Simulations

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