Turbulent Heat Transfer in a Symmetric Sudden Expansion Channel

• OHORI Yuki

  Dept. of Mechanical Systems and Design, Tohoku Univ.

• NAKAMURA Atsuhito

  Dept. of Mechanical Systems and Design, Tohoku Univ.

• YOSHIKAWA Hiroyuki

  Dept. of Mechanical Systems and Design, Tohoku Univ.

• OTA Terukazu

  Dept. of Mechanical Systems and Design, Tohoku Univ.

Bibliographic Information

Other Title

• 対称急拡大流路内乱流熱伝達(一般セッション 乱流)

Abstract

This paper presents experimental results of turbulent heat transfer in a separated and reattached flow in a sudden expansion rectangler channel. The step height H is 26mm, its spanwise length 200mm, and the channel expansion ratio 2.86, respectivety. The Reynolds number Re based on the uniform flow velocity at step and H was varied from 5000 to 35000. The flow in the channel becomes asymmetric due to the Coanda effect. It is found that the local Nusselt number profile is quite different on the upper and lower walls, and the location of maximum Nusselt number is very close to the flow reattachment point.

Journal

• The Proceedings of the Thermal Engineering Conference

  The Proceedings of the Thermal Engineering Conference 2004 (0), 409-410, 2004

  The Japan Society of Mechanical Engineers

Keywords

• Separated and Reattached Flow
• Turbulent Heat Transfer
• Double Step

Details

• CRID: 1390282680856491904
• NII Article ID: 110004058073
• DOI: 10.1299/jsmeted.2004.409
• ISSN: 2424290X
• Web Site: https://www.jstage.jst.go.jp/article/jsmeted/2004/0/2004_409/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed