Conjugate Heat and Mass Transfer in Metal Foams: A Numerical Study for Heat Exchangers Design

Abstract:

This numerical study focuses on the determination of macroscopic (effective) properties from pore scale calculation. These results will be applied to heat exchangers design. The computational domain -representative of heat exchanger section- is a parallelepiped filled with metallic foam, heated on one face and crossed by a forced fluid flow. Conjugate heat transfer and fluid flow are computed using finite volume approach on the actual solid matrix and pore space topology obtained from X-ray tomograms. Calculated heat transfer coefficient and flow law parameters are in good agreement with literature data. An active foam length is defined and measured in order to provide optimal design characteristic for foamed heat exchanger.

• Periodical: Defect and Diffusion Forum (Volumes 297-301)
• Pages: 960-965
• DOI: https://doi.org/10.4028/www.scientific.net/DDF.297-301.960
• Online since: April 2010
• Authors: Jean Michel Hugo, Emmanuel Brun, Frédéric Topin, Jérôme Vicente
• Keywords: Compact Heat Exchanger, Flow Law, Heat Transfer, Macroscopic Parameter, Metallic Foam, Numerical Simulation, Pore Scale, Pressure Drop

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DOI: 10.1615/ihtc13.p5.90

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