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Heat‐Transfer Coefficient for Cellular Materials Modelled as an Array of Elliptic Rods
Author(s) -
de Lemos Marcelo J. S.,
Saito Marcelo B.
Publication year - 2009
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.200900130
Subject(s) - rod , materials science , heat transfer coefficient , turbulence , heat transfer , mechanics , mass transfer , mass transfer coefficient , churchill–bernstein equation , convective heat transfer , convection , compressibility , thermodynamics , reynolds number , square (algebra) , fluid dynamics , nusselt number , physics , mathematics , geometry , medicine , alternative medicine , pathology
Convective heat‐transfer coefficients in foam‐like materials, modelled as an array of elliptic rods, are numerically determined. An incompressible fluid is considered, flowing through an infinite foam‐like material with an arbitrary solid temperature. A repetitive cell is identified and periodic boundary conditions are applied. Turbulence is handled with both low and high Reynolds number formulations. The interfacial heat‐transfer coefficient is obtained by volume integrating the distributed variables obtained within the cell. The results indicate that, for the same mass‐flow rate, materials formed by elliptic rods have a lower interfacial heat‐transfer coefficient compared to other media modelled as staggered arrays of square rods.