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Optimal Shapes of Straight Fins and Finned Heat Sinks

Research output: Contribution to journalArticleScientificpeer-review


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


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.


  • heat sink, trapezoidal fin, forced convection, analytical solution, optimization, component placement, FORCED-CONVECTION, NUMERICAL OPTIMIZATION, PERFORMANCE

Publication forum classification

Field of science, Statistics Finland