Optimal Shapes of Straight Fins and Finned Heat Sinks

Matti Lindstedt, Kaj Lampio, Reijo Karvinen

    Research output: Contribution to journalArticleScientificpeer-review

    16 Citations (Scopus)


    Finned heat sinks are used to cool power electronics components. We present optimization results for single rectangular, triangular, and trapezoidal fins. After that, we minimize the mass of an existing heat sink consisting of a base plate and a fin array by optimizing the geometrical variables and component locations on the base plate. An analytical solution is used with rectangular fins and a numerical model with trapezoidal fins. Whereas the triangle is the best shape for single fins, in a heat sink flow velocity coupled with geometry favors trapezoids over triangles and rectangles.

    Original languageEnglish
    Article number061006
    Number of pages8
    JournalJournal of Heat Transfer: Transactions of the ASME
    Issue number6
    Publication statusPublished - Jun 2015
    Publication typeA1 Journal article-refereed


    • heat sink
    • trapezoidal fin
    • forced convection
    • analytical solution
    • optimization
    • component placement

    Publication forum classification

    • Publication forum level 2


    Dive into the research topics of 'Optimal Shapes of Straight Fins and Finned Heat Sinks'. Together they form a unique fingerprint.

    Cite this