Numerical Investigation of Film Cooling from Two Rows of Holes with Anti-Vortex Holes Attached to the Upstream Row

Abdelmohimen, Mostafa (2015) Numerical Investigation of Film Cooling from Two Rows of Holes with Anti-Vortex Holes Attached to the Upstream Row. International Journal of Engineering and Technology Innovation, 5 (2). pp. 87-98.

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Abstract

Computational analysis of film cooling effectiveness from two rows of holes inclined with 30o on a flat surface in case of in-line and staggered arrangements has been carried out. The upstream row is supplemented with anti-vortex holes. The addition of anti-vortex holes is presented as a new technique depends on adding two cylindrical holes branching out from the main holes. Three different positions of anti-vortex holes are studied with three different values of velocity ratios. The study is carried out using realizable k-ϵ model in FLUENT commercial code. The numerical model is verified by comparing a single row of film cooling holes results with available experimental works in literature. The results ensure that the staggered arrangement gives higher film cooling effectiveness than the in-line one for all studied velocity ratios. The use of anti-vortex holes increases the film cooling effectiveness. The position of anti-vortex holes shows a significant effect, especially with high velocity ratios.

Item Type: Article
Subjects: Mechanical Engineering
Divisions: College Of Engineering > Mechanical Engineering
Depositing User: Dr Mostafa abdelmohimen
Date Deposited: 25 Apr 2017 06:46
Last Modified: 25 Apr 2017 06:46
URI: http://eprints.kku.edu.sa/id/eprint/668

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