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Critical analysis of heat transfer experiments in microchannels
Author(s) -
Hausner O.,
Herwig H.
Publication year - 2002
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/1617-7061(200203)1:1<341::aid-pamm341>3.0.co;2-n
Subject(s) - heat transfer , computational fluid dynamics , thermal conduction , mechanics , fluid dynamics , experimental data , materials science , thermodynamics , flow (mathematics) , computation , physics , computer science , mathematics , statistics , algorithm
Calculations using a standard CFD (Computational Fluid Dynamics) software were performed to investigate heat transfer characteristics in microchannels. The results were compared with published experimental data using dimensional analysis. To identify deviations between micro‐ and macroscale the computations took into account effects which are often neglected in macroscopic heat transfer devices, like axial heat conduction in the channel walls and entrance effects in the flow and temperature fields. The calculations indicate that analysis of experimental data has to be reconsidered taking into account these well known effects.