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Affiliation of Author(s):能源与动力学院

Journal:Hangkong Dongli Xuebao

Abstract:Experimental analysis was conducted to investigate the heat transfer inside a wedge-shaped concave by a row of jets from impingment plate with front-extended port. The effect of front-extended port extension spacing ratio (5~11), front-extended port width spacing ratio (2.5~8) and jet Reynolds number (7900~31700)on the concave surface temperature distribution, spanwised-averaged Nusselt numbers, area-averaged Nusselt numbers and jet pressure loss were experimentally tested. The results indicated that the convective heat transfer of impinging plate with front-extended port was obviously enhanced compared with baseline plate, the front-extended port caused high jet pressure loss. The convective heat transfer of concave surface was significantly improved with the increase of front-extended port extension spacing ratio, yielding little effect on jet pressure loss. Convective heat transfer of concave surface was enhanced with increase of front-extended port width spacing ratio, however, the total pressure loss increased also. © 2017, Editorial Department of Journal of Aerospace Power. All right reserved.

ISSN No.:1000-8055

Translation or Not:no

Date of Publication:2017-03-01

Co-author:Guan, Tao,Shan Yong,Li, Yun-Dan,Lu, Hai-Ying

Correspondence Author:zjz