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International Heat Transfer Conference 13
Graham de Vahl Davis (open in a new tab) School of Mechanical and Manufacturing Engineering, University of New South Wales, Kensington, NSW, Australia
Eddie Leonardi (open in a new tab) Computational Fluid Dynamics Research Laboratory, School of Mechanical and Manufacturing Engineering, The University of New South Wales, Sydney, Australia 2052

ISSN Online: 2377-424X

ISBN CD: 1-56700-226-9

ISBN Online: 1-56700-225-0

THERMAL RESISTANCE DUE TO SUB-MEAN FREE PATH CONSTRICTIONS

page 7
DOI: 10.1615/IHTC13.p2.40
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ABSTRAKT

We solve the ballistic-diffusive heat conduction equation to calculate the heat flux generated by a hot disk on a surface. The disk diameter is on the order of the phonon mean free path in the material. The thermal conductance between the hot disk and the semi-infinite body is ten times smaller than the one predicted by Fourier's Law when the disk diameter is equal to one half of the mean free path.

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