Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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A Study on Numerical Analysis for Heat Transfer and Flow Characteristics in a Ribbed Tube

열교환기 내 리브드 튜브의 열전달 및 유체유동에 관한 수치 해석적 연구

  • 전정도 (동아대학교 대학원 기계공학과) ;
  • 전언찬 (동아대학교 기계공학과) ;
  • 정희균 (성진지오텍(주) 기술연구소) ;
  • 이치우 (경남과학기술대학교 자동차공학과)
  • Received : 2011.11.03
  • Accepted : 2011.12.06
  • Published : 2011.12.31
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Abstract

This study was conducted on the characteristics of fluid flow and heat transfer in the ribbed tube used for a steam power plant. It was assumed that the air is incompressible and therefore, its density is not variable according to temperature. In addition, the gravity was ignored. A commercial code of computational fluid dynamics was used and standard k-$\epsilon$ model was used together with the energy equation included to calculate heat transfer. As Reynolds No. was low at the velocity distribution in the axial direction, the air reached hydro-dynamically fully developed region shortly but high Reynolds No. yielded late full hydro-dynamic development. The velocity distribution and non-dimensional temperature distribution were all physically reasonable and thus had a good agreement with the experimental result.

Keywords

References

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