Abo Bibliothek: Guest

ISSN Online: 2377-424X

ISBN CD: 1-56700-226-9

ISBN Online: 1-56700-225-0

International Heat Transfer Conference 13
August, 13-18, 2006, Sydney, Australia

NUMERICAL STUDY OF HEAT TRANSFER IN ALUMINIUM FOAMS SUBJECTED TO OSCILLATING FLOW

Get access (open in a dialog) DOI: 10.1615/IHTC13.p20.120
12 pages

Abstrakt

A numerical simulation is performed to investigate the transient heat transfer of oscillating flow through a channel filled with metal foam. The unsteady governing equation is employed and specific boundary conditions for oscillating flow through a metal foam channel are formulated. The transient temperatures and instantaneous local Nusselt numbers at different locations along the axial and vertical directions of the porous channel are calculated. The two-dimensional temperature contours of oscillating flow in metal foam with various flow displacements and oscillatory frequencies are illustrated. The numerical results show that the transient temperature profile for the dimensionless location x/De near the entrance is lower than that close to the middle of channel in a complete cycle. For both instantaneous and cycle-averaged Nusselt numbers, higher values are obtained under larger flow displacements at the same kinetic Reynolds number. Along with the discussion of the numerical results, the phenomena of transient heat transfer of oscillating flow through porous channel are elucidated physically.