설비공학논문집 (Korean Journal of Air-Conditioning and Refrigeration Engineering)

  • 제21권6호
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  • Pages.340-346
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  • 2009
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  • 1229-6422(pISSN)
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  • 2465-7611(eISSN)
대한설비공학회 (The Society of Air-Conditioning and Refrigerating Engineers of Korea)
권호 표지

Prandtl 수에 따른 옵셋 스트립 핀에서의 열 및 유동 분석

Thermo-Flow Analysis of Offset-Strip Fins according to Prandtl Number

  • Joo, Youn-Sik (School of Mechanical Engineering, Hanyang University) ;
  • Kong, Dong-Hyun (School of Mechanical Engineering, Hanyang University) ;
  • Lee, Kwan-Soo (School of Mechanical Engineering, Hanyang University)
  • 발행 : 2009.06.10
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초록

This paper numerically investigates thermo-flow characteristics of offset strip fins to obtain a correlation between heat transfer and pressure drop. The flow was divided into three regimes, i.e. laminar, transition and turbulent. The predicted j and f values from the SST k-$\omega$ turbulence model agreed with previous correlations with the error less than 20% in transition and turbulent regimes. Heat transfer and pressure drop were predicted by varying Prandtl number from 0.5 to 40. The Prandtl number showed little effects on pressure drop but had great effect on the heat transfer characteristics. An overall correlation to predict j was suggested by incorporating the effect of Pr and a new j correlation was suggested for each Pr.

키워드

참고문헌

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