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Numerical study of hole shape effect on blade cooling effectiveness

Yao, Jun; Sian, Sohan; Yao, Yufeng; Davis, Tony W.

Authors

Dr Jun Yao Jun.Yao@uwe.ac.uk
Senior Lecturer Aerospace Themofluids

Sohan Sian

Yufeng Yao Yufeng.Yao@uwe.ac.uk
Professor in Aerospace Engineering

Tony W. Davis



Abstract

Numerical study of hole shape effect on blade adiabatic cooling effectiveness has been carried out on four geometry models comprising a standard cylindrical hole, a cylindrical hole with an upstream ramp, a shaped diffuser, and a double console slot. In all the cases, the hole centerline has an inclination angle of 35 degree against the mainstream gas flow. Results of the cylindrical hole model are in good agreement with available experimental and other numerical data. For the other three hole geometry variants considered, it was found that the cooling effectiveness has been considerably enhanced by a max factor of 2, compared to that from the base model. The physical mechanism for this is mainly due to the weakening of coolant flow penetration in the vicinity of the hole exit, thus reducing the level of mixing and the entrainment with the surrounding hot gas flow. © 2010 World Scientific Publishing Company.

Citation

Yao, J., Sian, S., Yao, Y., & Davis, T. W. (2010). Numerical study of hole shape effect on blade cooling effectiveness. Modern Physics Letters B, 24(13), 1295-1298. https://doi.org/10.1142/S0217984910023463

Journal Article Type Conference Paper
Publication Date May 30, 2010
Journal Modern Physics Letters B
Print ISSN 0217-9849
Publisher World Scientific Publishing
Peer Reviewed Not Peer Reviewed
Volume 24
Issue 13
Pages 1295-1298
DOI https://doi.org/10.1142/S0217984910023463
Keywords adiabatic cooling effectiveness, hole shape effect
Public URL https://uwe-repository.worktribe.com/output/979696
Publisher URL http://dx.doi.org/10.1142/S0217984910023463
Additional Information Additional Information : This work was supported by the Engineering and Physical Sciences Research Council [grant number EP/C014979/1].