한국산학기술학회논문지 (Journal of the Korea Academia-Industrial cooperation Society)

  • 제15권9호
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  • Pages.5467-5473
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  • 2014
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  • 1975-4701(pISSN)
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  • 2288-4688(eISSN)
한국산학기술학회 (The Korea Academia-Industrial cooperation Society)
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유한 요소법을 이용한 히트싱크의 성능평가를 위한 열해석 연구

Thermal Analysis of the Heat Sink Performance using FEM

  • 이봉구 (영남이공대학교 기계계열) ;
  • 이민 (부경대학교 기계공학과)
  • Lee, Bong-Gu (Division of Mechanical Engineering, Yeungnam University College) ;
  • Lee, Min (Graduate School of Mechanical Engineering, Pukyong National University)
  • 투고 : 2014.07.21
  • 심사 : 2014.09.11
  • 발행 : 2014.09.30
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초록

최근 전자 및 기계부품 기술의 발전으로 전자 장비는 더욱 고성능화, 소형화, 다기능화 되면서 시스템 내부에 발생하는 발열부의 온도를 제어하기 위해 히트싱크가 사용된다. 본 연구에서는 내부 터널 구조의 2가지 형상의 히트싱크의 열 성능평가를 유한요소 프로그램인 ANSYS를 이용하여 수치해석 하였다. 수치해석은 자연대류 상태에서의 열 성능을 수치해석으로 비교 분석하여 냉각핀 형상에 따른 열 성능을 평가하였다. 또한 시간에 따른 열전달 특성과 온도분표의 해석결과를 기초로 하여 히트싱크의 성능평가를 예측하였다. 수치해석의 결과, 형상 A 히트싱크가 형상 B의 히트싱크보다 열 전달율이 자연대류에서 약 70% 향상되었다.

This study examined the numerical analysis results with respect to the thermal behavior of a natural convection cooled pin-fin heat sink. The heat sink consisted of pin fins integrated with plate fins. The heat sinks were designed with two different types to fit the limited internal space. The two types of heat sinks designed were analyzed using the ANSYS software package, and the numerical analysis results were compared with the cooling performance of the two types of heat sinks. The results of the simulation were analyzed according to the temperature distribution and air flow characteristics, heat flux etc. This study examined the correlation of the cooling performance with the heat sink internal structure and fin shape. FEM (Finite Element Method) confirmed the cooling performance of heat sink type A under natural convection conditions as the best results. The results of the numerical simulation showed that the heat sink type A shape showed an approximately 70 percent better heat transfer rate with natural convection than that of type B.

키워드

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