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Computational analysis of heat transfer in turbulent flow past a horizontal surface with two-dimensional ribs

Lee, C.K. and Abdel-Moneim, S.A. (2001) Computational analysis of heat transfer in turbulent flow past a horizontal surface with two-dimensional ribs. International Communications in Heat and Mass Transfer, 28 (2). pp. 161-170. ISSN 0735-1933

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Abstract

Heat transfer and flow behaviours past a horizontal surface with two-dimensional transverse ribs were numerically investigated using a CFD model. The present model was adopted for turbulent flow of air past a number of rib arrays with different rib pitch to height ratios heated with a uniform heat flux. The temperature profiles and the local heat transfer coefficients as well as the flow velocity and turbulence characteristics were predicted. The results showed that the presence of the transverse ribs yields a significant enhancement of the heat transfer compared with that for a flat plate and the predicted heat transfer coefficients showed good agreement with previous experimental results. Also, peaks in local heat transfer coefficients were predicted within the interrib regions and were found to coincide with the points of reattachment of the separated flows.

Item type: Article
ID code: 6075
Keywords: mounted 2-dimensional rib, one principal wall, rectangular duct, channel, friction, Mechanical engineering and machinery, Atomic and Molecular Physics, and Optics, Chemical Engineering(all), Condensed Matter Physics
Subjects: Technology > Mechanical engineering and machinery
Department: Faculty of Engineering > Mechanical and Aerospace Engineering
Related URLs:
    Depositing user: Strathprints Administrator
    Date Deposited: 15 May 2008
    Last modified: 04 Sep 2014 14:37
    URI: http://strathprints.strath.ac.uk/id/eprint/6075

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