Enhancement of heat transfer in a turbulent channel flow with insertion of a flat body

✍ Scribed by Masatoshi Sano

• Publisher: John Wiley and Sons
• Year: 2003
• Tongue: English
• Weight: 705 KB
• Volume: 32
• Category: Article
• ISSN: 1099-2871
• DOI: 10.1002/htj.10100

✦ Synopsis

Abstract

Experiments have been performed for turbulent channel flow obstructed with a flat body. The local heat transfer coefficient and the wall static pressure were measured on two kinds of flat bodies for which the trailing edge shape differed. The length of the body, the thickness of the body, and the distance between the wall and the body were changed in several steps. The total performance between heat transfer and pressure drop was estimated under conditions of equal pumping power. The total performance hardly changed, even if the trailing edge shape and length of the bodies were different. The averaged heat transfer coefficient increased with increasing thickness of the bodies. However, as the friction factor increased, the performance became worse. When a comparatively thin body was installed near the heating surface, good performance was obtained. © 2003 Wiley Periodicals, Inc. Heat Trans Asian Res, 32(4): 354–366, 2003; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/htj.10100