Studying the performance of solid/perforated pin-fin heat sinks using entropy generation minimization

    Authors

    M. L. Elsayed;O. Mesalhy

    Comments

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    Abbreviated Journal Title

    Heat Mass Transf.

    Keywords

    STAGGERED ARRAYS; FLOW; Thermodynamics; Mechanics

    Abstract

    Heat transfer and pressure drop characteristics of a set of pin-fins with uniform heat flux were investigated experimentally and numerically. Test set-up was designed to assess the effects of mass flow rate, fin height, and fin density on convection heat transfer and pressure drop. In the numerical investigation, the flow field of various design parameters of the heat sink was simulated. It was found that heat sinks having fin heights of 20 and 30 mm operated at a lower Reynolds number reached minimum value for thermal resistance when the fin density 10 x 10. Which means it is the optimum number of fins for this case. Also, friction factor increased with a decrease in the bypass flow area or inter-fin distance spacing and using perforated fins reduced the pressure losses and thermal resistance for all studied cases.

    Journal Title

    Heat and Mass Transfer

    Volume

    51

    Issue/Number

    5

    Publication Date

    1-1-2015

    Document Type

    Article

    Language

    English

    First Page

    691

    Last Page

    702

    WOS Identifier

    WOS:000353215200009

    ISSN

    0947-7411

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