Heat transfer and frictional characteristics in rectangular channel with inclined perforated baffles

Se Kyung Oh, Ary Bachtiar Krishna Putra, Soo Whan Ahn

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

A numerical study on the turbulent flow and heat transfer characteristics in the rectangular channel with different types of baffles is carried out. The inclined baffles have the width of 19.8 cm, the square diamond type hole having one side length of 2.55 cm, and the inclination angle of 5o. Reynolds number is varied between 23,000 and 57,000. The SST turbulence model is applied in the calculation. The validity of the numerical results is examined by the experimental data. The numerical results of the flow field depict that the flow patterns around the different baffle type are entirely different and these significantly affect the local heat transfer characteristics. The heat transfer and friction factor characteristics are significantly affected by the perforation density of the baffle plate. It is found that the heat transfer enhancement of baffle type II (3 hole baffle) has the best values.

Original languageEnglish
Pages (from-to)324-329
Number of pages6
JournalWorld Academy of Science, Engineering and Technology
Volume37
Publication statusPublished - Jan 2009
Externally publishedYes

Keywords

  • Friction factor
  • Heat transfer
  • Inclined baffle
  • Rectangular channel
  • Turbulent flow

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