Experimental study of heat transfer characteristics due to confined impinging two-dimensional jets

✍ Scribed by Koichi Ichimiya; Nobuo Hosaka

• Publisher: Elsevier Science
• Year: 1992
• Tongue: English
• Weight: 454 KB
• Volume: 5
• Category: Article
• ISSN: 0894-1777
• DOI: 10.1016/0894-1777(92)90124-n

✦ Synopsis

Experimental results are presented for characteristics of impingement heat transfer caused by three slot jets. Experimental values were obtained for the dimensionless distance H = 0.5-3, dimensionless pitch P = 6-16, and Reynolds number Re = 500-8000. For laminar impinging flow, they were compared with numerical results. For turbulent impinging flow, two peaks of the local Nusselt number were obtained behind the second nozzle. The position of the second peak approached the nozzle as the space between nozzle and impinged surface decreased. The average Nusselt number between the central and second nozzles was determined from the ratio P/H and the Reynolds number based on the pitch of the nozzles.