Heat Transfer Control Around an Obstacle by Using Ribs in the Downstream Region

Zahra Ghorbani-Tari, Lei Wang, Bengt Sundén

Research output: Contribution to journalArticlepeer-review

9 Citations (SciVal)

Abstract

This paper investigates the effect of the presence of a rib on the local heat transfer around an obstacle using liquid crystal technique. An obstacle with a rectangular cross section is placed in a channel and attached to the end-wall. A rib is positioned in the downstream region of the obstacle. The spacing S between the rib and the obstacle is normalized by the spanwise width of the obstacle and the value is 1.25d. The effects of the rib height e/D-h and Reynolds number are investigated. The e/D-h has the values 0.039 and 0.078. The Reynolds number varies between 35,600 and 55,600. It is shown that the local heat transfer in the upstream region of the obstacle remained unaffected by the presence of the rib. The feature of local heat transfer in the downstream area of the obstacle was substantially modified by the presence of the rib.
Original languageEnglish
Article number041010
JournalJournal of Thermal Science and Engineering Apllications
Volume6
Issue number4
DOIs
Publication statusPublished - 2014

Subject classification (UKÄ)

  • Fluid Mechanics and Acoustics

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