The KSFM Journal of Fluid Machinery (한국유체기계학회 논문집)

Korean Society for Fluid machinery (한국유체기계학회)
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A Numerical Study on the Effect of Fin Pitch and Fin Array on the Heat Transfer Performance of a Pre-heater

휜의 피치 및 배열 방식에 따른 프리히터의 전열 성능에 관한 연구

  • Yoo, Ji Hoon (Graduate School, Department of Aerospace Engineering, Pusan National University) ;
  • Kim, Kuisoon (Department of Aerospace Engineering, Pusan National University)
  • 유지훈 (부산대학교 항공우주공학과 대학원) ;
  • 김귀순 (부산대학교 항공우주공학과)
  • Received : 2013.09.02
  • Accepted : 2013.11.07
  • Published : 2013.12.01
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Abstract

In this paper, a numerical study was performed to investigate the performance characteristics of a pre-heater. The effects of fin pitch and fin array type(in-line, staggered, leaned array) were reported in terms of Colburn j-factor and Fanning friction factor f, as a function of Re. Three-dimensional numerical simulation has been performed by using flow analysis program, FLUENT 13.0. The results show that Colburn j-factor decreases with the decrease of fin pitch attached in the annular tube. But the fin pitch has little effect on f-factor. The staggered array and leaned array show improved heat transfer performance compared with in-line array, so that Colburn j-factor was increased. It also shows that the f-factor of leaned array is the highest in the studied range of Reynolds number.

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References

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