THERMAL SCIENCE

International Scientific Journal

Authors of this Paper

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Nan Li

,

Peng Feng

,

Jie Cui

,

Fan Li

,

Jiawei Song

NUMERICAL STUDY ON FLOW AND HEAT TRANSFER CHARACTERISTICS IN STRUCTURED PACKED BED

ABSTRACT
The ANSYS software is introduced to reproduce the in-line and staggered sphere packed bed model. To investigate the influence of model on the heat transfer and flow characteristics in the high temperature packed bed, numerical simulations of pore-level was used to numerically appreciate the changes of pressure drop, temperature and velocity. The simulation values qualitatively agree with the experimental result. The results show that the pressure drop in high temperature packed bed increases significantly. The pressure drop increases about 3200 Pa when the inlet velocity is 0.33-0.73 m/s. The model has significant influence on the average temperature of solid and gas phases. Compared with the in-line arrangement, the heat wave transfer is slower and the temperature is slightly higher by 20 K in the staggered model. The average velocity in the structured packed bed increases and decreases periodically. In staggered model, the velocity disturbance is more significant. These findings are helpful for understanding transport phenomena in packed beds as well as the design of high efficiency reactors.
KEYWORDS
spherical porous media, packed structure, temperature distribution, flow
PAPER SUBMITTED: 2023-04-22
PAPER REVISED: 2023-07-11
PAPER ACCEPTED: 2023-08-18
PUBLISHED ONLINE: 2023-10-08
DOI REFERENCE: https://doi.org/10.2298/TSCI230422197L
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2024, VOLUME 28, ISSUE Issue 2, PAGES [1665 - 1675]
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Numerical study on flow and heat transfer characteristics in structured packed bed

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence