Transient heat transfer and non-isothermal particle-laden gas flows through porous metal foams of differing structure

Multiphase solid-gas flows and particulate fouling in porous media are omnipresent in many environmental and industrial applications. However, the underlying mechanisms and transport behaviour of these complex fluids coupled with heat transfer effects are poorly understood. Moreover, the complexity...

Full description

Saved in:
Bibliographic Details
Published in:Applied thermal engineering 2019-03, Vol.150, p.888-903
Main Authors: Kuruneru, S.T.W., Saha, S.C., Sauret, E., Gu, YT
Format: Article
Language:English
Subjects:
Complexity
Computational fluid dynamics
Environmental studies
Foamed metals
Gas flow
Gas transport
Heat exchangers
Heat transfer
Indoor environments
Industrial applications
Mathematical models
Metal foam
Metal foams
Multiphase
Multiphase flow
Numerical analysis
Optimization
Porous media
Solid-gas flow
Temperature effects
Temperature profiles
Thermodynamic properties
Transient heat transfer
Transport phenomena
Wall temperature
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Multiphase solid-gas flows and particulate fouling in porous media are omnipresent in many environmental and industrial applications. However, the underlying mechanisms and transport behaviour of these complex fluids coupled with heat transfer effects are poorly understood. Moreover, the complexity of multiphase non-isothermal solid-gas transport is further compounded by the fact that thermal solid-gas transport through porous metal foams is not established. This paper numerically investigates non-isothermal solid-gas flows through an idealized metal foam heat exchanger based on a cylindrical ligament and a Weaire-Phelan model. We delve into the dynamics and heat transfer profiles of solid-gas flows immersed in porous metal foams based on various solid foulant properties. The foulant thermal behaviour based on various metal foam ligament wall temperatures is investigated. It is found that the foulant temperature profiles vary with time and the temperature profiles also vary with increasing wall temperature. Moreover, the Weaire-Phelan (WP) model can be used as an alternative to the real metal foam sample. The heat transfer between the foulant, wall, and fluid play a pivotal role in the alteration of the temperature profiles. The developed numerical methodology and the WP geometry may serve as a stepping-stone to address pertinent issues such as indoor environmental studies and optimization of compact heat exchangers.
ISSN:1359-4311
1873-5606
DOI:10.1016/j.applthermaleng.2019.01.041