Nusselt number correlation for natural convection from vertical cylinders with triangular fins

Myoungwoo Lee, Hyun Jung Kim, Dong Kwon Kim*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)

Abstract

In this study, natural convection from vertical cylinders with triangular fins was experimentally investigated with various fin numbers, fin heights, and base temperatures. From the experimental data, we propose a correlation for estimating the Nusselt number, which is applicable when the Rayleigh number, ratio of the fin height to fin length, and fin number are in the ranges of 1000-120,000, 0.2-0.6, and 9-72, respectively. Using this correlation, a contour map depicting the thermal resistance as a function of the fin number and fin thickness is presented. This contour map shows the existence of the fin number and fin thickness, at which the thermal resistance is minimized.

Original languageEnglish
Pages (from-to)1238-1247
Number of pages10
JournalApplied Thermal Engineering
Volume93
DOIs
Publication statusPublished - 2016 Jan 25
Externally publishedYes

Keywords

  • Natural convection
  • Nusselt number
  • Triangular fin

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Industrial and Manufacturing Engineering

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