Detailed measurement of heat/mass transfer with continuous and multiple V-shaped ribs in rectangular channel

Dong Hyun Lee, Dong Ho Rhee, Kyung Min Kim, Hyung Hee Cho, Hee Koo Moon

Research output: Contribution to journalArticle

55 Citations (Scopus)

Abstract

Effects of aspect ratio on heat/mass transfer were investigated in rectangular channels with two different V-shaped rib configurations, which are continuous V-shaped rib configuration with a 60° attack angle, and multiple (staggered) V-shaped rib configuration with a 45° attack angle. The square ribs were attached on the test section in a parallel manner. A naphthalene sublimation method was used to measure the local heat/mass transfer coefficients. For the continuous V-shaped rib configuration, two pairs of counter-rotating vortices were generated in the channel, and high transfer region was formed at the center of the ribbed walls. However, for the multiple V-shaped rib configuration with 45° attack angle, asymmetric secondary flow patterns were generated due to its geometric features, resulting in uniform heat/mass transfer distributions. The effect of channel aspect ratio was more significant for the continuous 60° V-shaped rib than for the multiple 45° V-shaped rib configuration.

Original languageEnglish
Pages (from-to)1770-1778
Number of pages9
JournalEnergy
Volume34
Issue number11
DOIs
Publication statusPublished - 2009 Nov

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Building and Construction
  • Pollution
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

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