Skip to main content

Research Repository

Advanced Search

Effect of lid height and blowing ratio on film cooling effectiveness of a novel lidded hole configuration

Guelailia, Ahmed; Khorsi, Azzeddine; Slimane, Sid Ahmed; Blala, Hamza; Slimane, Abdelkader; Salem, Houria; Bouferrouk, Abdessalem

Effect of lid height and blowing ratio on film cooling effectiveness of a novel lidded hole configuration Thumbnail


Authors

Ahmed Guelailia

Azzeddine Khorsi

Sid Ahmed Slimane

Hamza Blala

Abdelkader Slimane

Houria Salem



Abstract

Film cooling is one of the promising technologies used for protecting rocket nozzles and turbine blades from combustion chamber hot gases. This paper proposes a novel shape of film cooling injection hole, called lidded hole, that can offer significant enhancement of cooling performance. ANSYS CFX is used to perform 3D numerical simulations of a flat plate with a single row of lidded holes, in which the k–ε model approximates turbulence effects. Four cases are investigated to highlight the influence of the hole's lid height (H/d = 0, 0.25, 0.5, 0.75). The effect of blowing ratios (M = 0.5, 1, 1.5) is also analyzed for each configuration. The numerical results of this study are compared with available experimental data, and, generally, a good agreement is achieved. The results obtained show that the lidded hole configuration reduces the coolant flow separation which improves significantly the film cooling effectiveness. In addition, increasing the blowing ratio leads to an increase in lateral and centerline cooling effectiveness. Comparing all studied cases, the optimum coolant coverage was obtained for the lidded hole configuration with H/d = 0.25 at M = 1.5.

Journal Article Type Article
Acceptance Date Apr 1, 2022
Online Publication Date May 2, 2022
Publication Date Dec 1, 2022
Deposit Date May 6, 2022
Publicly Available Date May 6, 2022
Journal Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering
Print ISSN 0954-4089
Electronic ISSN 2041-3009
Publisher SAGE Publications
Peer Reviewed Peer Reviewed
Volume 236
Issue 6
Pages 2599-2607
DOI https://doi.org/10.1177/09544089221095665
Keywords Industrial and Manufacturing Engineering; Mechanical Engineering; Computational fluid dynamics; film cooling effectiveness; blowing ratio; heat and mass transfer; lidded hole
Public URL https://uwe-repository.worktribe.com/output/9459022

Files

Effect of lid height and blowing ratio on film cooling effectiveness of a novel lidded hole configuration (344 Kb)
PDF

Licence
http://creativecommons.org/licenses/by-nc-nd/4.0/

Publisher Licence URL
http://creativecommons.org/licenses/by-nc-nd/4.0/

Copyright Statement
This is the author’s accepted manuscript of the article ‘Guelailia, A., Khorsi, A., Slimane, S. A., Blala, H., Slimane, A., Salem, H., & Bouferrouk, A. (2022). Effect of lid height and blowing ratio on film cooling effectiveness of a novel lidded hole configuration. Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering, 236(6), 2599-2607. https://doi.org/10.1177/09544089221095665’
The final published version is available here: https://journals.sagepub.com/doi/10.1177/09544089221095665





You might also like



Downloadable Citations