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Abstract:
In this study, the adiabatic film cooling effectiveness and conjugate heat transfer characteristics for a circular hole are investigated numerically. Seven turbulator ribs are located on the internal wall, and a film cooling hole between two adjacent ribs has an inclination angle of 30 degrees. The secondary flow rate is affected by the internal channel flow velocity, and the external film cooling is combined with the internal channel flow conditions. In the conjugate heat transfer research, two different plate materials are considered to analyze the heat conduction characteristics. The results show that the turbulator ribs enhance the downstream heat transfer and provide a more extensive coverage area and effective cooling protection. More blade-wall heat is transferred by heat conduction, which makes the area-average wall temperature for the high thermal conductivity case to decrease along the secondary flow direction. The wall temperature distribution and film cooling effectiveness are affected significantly by heat conduction.
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Source :
HEAT TRANSFER RESEARCH
ISSN: 1064-2285
Year: 2016
Issue: 2
Volume: 47
Page: 89-103
Language: English
0 . 8 6 8
JCR@2016
2 . 4 4 3
JCR@2020
ESI Discipline: ENGINEERING;
ESI HC Threshold:128
JCR Journal Grade:4
CAS Journal Grade:4
Cited Count:
WoS CC Cited Count: 3
SCOPUS Cited Count: 4
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 3
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