AbdulWahid, Ammar Fakhir and Mat Lazim, Tholudin and Saat, Aminuddin and Kareem, Zaid Sattar (2015) Investigation of film cooling effectiveness enhancement by using corrugated spiral holes. International Review of Mechanical Engineering, 9 (4). pp. 360-367. ISSN 1970-8734
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Abstract
Film cooling represents one of the important game-changing technologies that has allowed the achievement of today’s high inlet turbine temperature to get high-efficiency gas turbine engines. Shear Stress Transport (SST) K-? was performed to investigate the flow structures and the development process of vortices in different sections (rectangular, hexagonal and circular) of a stationary gas turbine at blowing ratio equal to (0.5, 1.0, 1.5 and 2.0), while the jet film coolinghole angles equal to (90°, 60°, 45° and 30°). It was observed that higher freestream turbulence improves adiabatic effectiveness and heat transfer coefficient for the corrugation film cooling holes design and specially enhancement at holes angle equal to 30° with twisted angle equal to 360° and rectangular corrugation shape. Results show the effectiveness enhancement range of 20.1%-69.3%of the smooth film cooling hole. Numerical calculation of film cooling effectiveness is validated with reported numerical and experimental results
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | turbulent flowreferences, twisted holes |
| Subjects: | T Technology > TJ Mechanical engineering and machinery |
| Divisions: | Mechanical Engineering |
| ID Code: | 56053 |
| Deposited By: | Fazli Masari |
| Deposited On: | 15 Nov 2016 08:47 |
| Last Modified: | 15 Feb 2017 00:38 |
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