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- Title
Experimental Investigation on Cooling Effectiveness of Film-Effusion Cooling.
- Authors
Yang Weihua; Lu Congming; Zheng Jianwen
- Abstract
In order to study the cooling characteristics of film-effusion combination cooling structure, three kinds of test pieces are designed. Their cooling effectiveness is investigated by experimental method with infrared cameras. The experimental result shows that: (l)the cooling film from the film slot improves cooling effect in the beginning region of the effusion cooling, which largely increases the integrated film-effusion cooling effectiveness, (2)the cooling effectiveness is gradually decreased with the increase of the effusion hole space, (3)the effusion hole angle has a large effect on the cooling effectiveness, and the cooling effectiveness is the highest when the effusion hole angle is 45 . But, at a higher blowing ratio, the cooling effectiveness reaches the highest in the mid and tail of the effusion cooling re-gion with the effusion hole angle of 0°.
- Subjects
COOLANTS; EXUDATES &; transudates; INFRARED cameras; BLOW molding; HOLES (Electron deficiencies)
- Publication
Journal of Nanjing University of Aeronautics & Astronautics / Nanjing Hangkong Hangtian Daxue Xuebao, 2014, Vol 46, Issue 4, p517
- ISSN
1005-2615
- Publication type
Article