Effect of partial blockage on flow and heat transfer of film cooling with cylindrical and fan-shaped holes

Large eddy simulation is used to study the effect of partial blockage on the film cooling characteristics of cylindrical and fan-shaped holes at the blowing ratio of M=0.5. The results show that severe blockage (H/D=0.75) resulted in a decrease of about 97% and 27% in the laterally-averaged film coo...

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Bibliographic Details
Published in:International journal of thermal sciences 2021-06, Vol.164, p.106866, Article 106866
Main Authors: Chen, Xiaohu, Wang, Yuzhang, Long, Yun, Weng, Shilie
Format: Article
Language:English
Subjects:
Film cooling
Flow
Heat transfer
Large eddy simulation
Partial blockage
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Summary:Large eddy simulation is used to study the effect of partial blockage on the film cooling characteristics of cylindrical and fan-shaped holes at the blowing ratio of M=0.5. The results show that severe blockage (H/D=0.75) resulted in a decrease of about 97% and 27% in the laterally-averaged film cooling effectiveness of cylindrical and fan-shaped holes. Slight blockage (H/D
ISSN:1290-0729
1778-4166
DOI:10.1016/j.ijthermalsci.2021.106866