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

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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.

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Authors and Affiliations

  1. School of Mechanical Engineering, Hanyang University, Seoul, 04763, Korea

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

  2. R&D Center for Research & Business Cooperation Mechatronics Team, Institute for Advanced Engineering, Yongin, 17180, Korea

    Jung-Hun Noh

Authors
  1. Dong-Bin Kwak
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  2. Hoon-Pyo Kwak
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  3. Jung-Hun Noh
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  4. Se-Jin Yook
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Corresponding author

Correspondence to Se-Jin Yook.

Additional information

Recommended by Associate Editor Ji Hwan Jeong

Dong-Bin Kwak received the B.S. degree from the School of Mechanical Engineering, Hanyang University, Republic of Korea, in 2017. He is currently a Ph.D. student at the Department of Mechanical Engineering, University of Minnesota, USA. His research interests include heat transfer and aerosol technology.

Hoon-Pyo Kwak received the B.S. degree from the Department of Mechanical Engineering, Myongji University, Republic of Korea, in 2010, and the M.S. degree from the Department of Mechanical Convergence Engineering, Hanyang University, Republic ore Korea, in 2016. His research interests include thermo-flow modeling.

Jung-Hun Noh received the B.S. degree from the School of Mechanical Engineering, Hanyang University, Republic of Korea, in 2010, and the Ph.D. degree from the Department of Mechanical Convergence Engineering, Hanyang University, Republic ore Korea, in 2017. His research interest includes heat transfer.

Se-Jin Yook received the B.S. degree from the School of Mechanical Engineering, Hanyang University, Republic of Korea, in 2000, and the Ph.D. degree from the Department of Mechanical Engineering, University of Minnesota, USA, in 2007. He is currently an Associate Professor at the School of Mechanical Engineering, Hanyang University, Republic of Korea. His research interests include heat transfer and aerosol technology.

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Kwak, DB., Kwak, HP., Noh, JH. et al. Optimization of the radial heat sink with a concentric cylinder and triangular fins installed on a circular base. J Mech Sci Technol 32, 505–512 (2018). https://doi.org/10.1007/s12206-017-1252-4

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  • DOI: https://doi.org/10.1007/s12206-017-1252-4

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