Heat transfer of large Prandtl number fluids in porous media by a new lattice Boltzmann model

Sheng Chen*, Wenhao Li, Hayder I. Mohammed

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

With the fast development of sustainable energy technologies and the extreme urgency to protect the living environment, it is crucial to deepen our understanding on the heat transfer characteristics of natural convection of large Prandtl number fluids in porous media. In this study a novel lattice Boltzmann approach is developed as a powerful numerical tool to close the knowledge gap on this important topic. With the aid of this new numerical tool, four new findings are reported and they show that the heat transfer characteristics and correlations of natural convection of large Prandtl number fluids in porous media are quite different from their small Prandtl number counterparts. Through the present analysis, it is found that such inconsistences result from that a transition from a convection-dominated heat transfer process to a conduction-dominated one will appear more easily for large Prandtl number fluids in porous media.

Original languageEnglish
Article number105129
Number of pages10
JournalInternational Communications in Heat and Mass Transfer
Volume122
Early online date22 Jan 2021
DOIs
Publication statusPublished - Mar 2021
Externally publishedYes

Keywords

  • Natural convection
  • Lattice Boltzmann
  • Prandtl number
  • Porous media

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • General Chemical Engineering
  • Condensed Matter Physics

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