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Title: Modelling and simulation techniques for forced convection heat transfer in heat sinks with rectangular fins
Authors: Jouhara, H
Axcell, BP
Keywords: Fins;Heat sink;Laminar heat transfer;Parallel flow
Issue Date: 2009
Publisher: Elsevier
Citation: Simulation Modelling Practice and Theory 17(5): 871-882, May 2009
Abstract: This paper provides a comprehensive description of the thermal conditions within a heat sink with rectangular fins under conditions of cooling by laminar forced convection. The analysis, in which increasing complexity is progressively introduced, uses both classical heat transfer theory and a computational approach to model the increase in air temperature through the channels formed by adjacent fins and the results agree well with published experimental data. The calculations show how key heat transfer parameters vary with axial distance, in particular the rapid changes in heat transfer coefficient and fin efficiency near the leading edges of the cooling fins. Despite these rapid changes and the somewhat ill-defined flow conditions which would exist in practice at the entry to the heat sink, the results clearly show that, compared with the most complex case of a full numerical simulation, accurate predictions of heat sink performance are attainable using analytical methods which incorporate average values of heat transfer coefficient and fin efficiency. The mathematical modelling and solution techniques for each method are described in detail.
Description: The official published version of this article can be found at the link below.
ISSN: 1569-190X
Appears in Collections:Mechanical and Aerospace Engineering
Dept of Mechanical and Aerospace Engineering Research Papers

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