Optimization of the radial heat sink with a concentric cylinder and triangular fins installed on a circular base

Dong Bin Kwak, Hoon Pyo Kwak, Jung Hun Noh, Se Jin Yook

Research output: Contribution to journalArticle

5 Scopus citations

Abstract

In this study, a radial heat sink with a concentric cylinder and triangular fins installed on a circular base, that is, a heat sink representing a general shape of the heat sinks employed for most of the commercial LED light bulbs, was optimized in terms of mass and thermal resistance. A numerical study was performed by considering natural convection and radiation heat transfer, and was validated through experiment. The effects of various geometric parameters, that is, radius of heat sink base, number of fins, fin height, and radius of hollow cylinder, on thermal resistance and convectional heat transfer coefficient were investigated. Multiobjective optimization was conducted by using the weighted sum method and the genetic algorithm. As a result, Pareto fronts were obtained, and the thermal resistance and mass of the radial heat sink with triangular fins were reduced compared to those of the reference radial heat sink.

Original languageEnglish
Pages (from-to)505-512
Number of pages8
JournalJournal of Mechanical Science and Technology
Volume32
Issue number1
DOIs
StatePublished - 2018 Jan 1

Keywords

  • Multiobjective optimization
  • Radial heat sink
  • Thermal resistance
  • Triangular fin

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