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Conjugate Heat Transfer Study of Combined Impingement and Showerhead Film Cooling Near NGV Leading Edge
Joint Authors
Prasad, B. V. S. S. S.
Chandran, Dileep
Source
International Journal of Rotating Machinery
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-13, 13 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-05-03
Country of Publication
Egypt
No. of Pages
13
Main Subjects
Abstract EN
A computational and experimental study is carried out on the leading edge region of a typical gas turbine NGV, cooled by a combination of impingement and showerhead film cooling.
A detailed flow and conjugate heat transfer study has revealed the complex flow structure owing to the coolant-mainstream interaction and the influence of vane material thermal conductivity.
The local effectiveness values obtained by the computations agreed well with the experimental data from IR thermography.
The effect of blowing ratio on the overall effectiveness is found to be strongly dependent on the vane material conductivity.
The effect of blowing ratio is also found to be different towards the pressure and suction sides of the stagnation region.
However, the overall effectiveness is found to decrease by about 12% and 6% for low and high conducting materials, respectively, with an increase in mainstream Reynolds number from Re = 4.8 × 10 5 to 14.4 × 10 5 .
American Psychological Association (APA)
Chandran, Dileep& Prasad, B. V. S. S. S.. 2015. Conjugate Heat Transfer Study of Combined Impingement and Showerhead Film Cooling Near NGV Leading Edge. International Journal of Rotating Machinery،Vol. 2015, no. 2015, pp.1-13.
https://search.emarefa.net/detail/BIM-1066920
Modern Language Association (MLA)
Chandran, Dileep& Prasad, B. V. S. S. S.. Conjugate Heat Transfer Study of Combined Impingement and Showerhead Film Cooling Near NGV Leading Edge. International Journal of Rotating Machinery No. 2015 (2015), pp.1-13.
https://search.emarefa.net/detail/BIM-1066920
American Medical Association (AMA)
Chandran, Dileep& Prasad, B. V. S. S. S.. Conjugate Heat Transfer Study of Combined Impingement and Showerhead Film Cooling Near NGV Leading Edge. International Journal of Rotating Machinery. 2015. Vol. 2015, no. 2015, pp.1-13.
https://search.emarefa.net/detail/BIM-1066920
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1066920