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An experiment investigation of film cooling effectivenes of sister hole of cylindrical shaped hole film cooling geometry on a flat plate surface

Md Yazid, Muhammad Haziq and Salleh, Hamidon and Azahari, Razali (2014) An experiment investigation of film cooling effectivenes of sister hole of cylindrical shaped hole film cooling geometry on a flat plate surface. In: International Integrated Engineering Summit (IIES 2014), 1-4 December 2014, Universiti Tun Hussein Onn Malaysia, Johor.

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Abstract

This paper deals with effects of sister hole on cylindrical shape film cooling performance. The objective of introducing sister holes is aiming for further enhancement of film cooling effectiveness of conventional film cooling. The performance of sister holes, installed upstream of primary holes with inclination angle 30°, is thoroughly investigated and reported in this study. Effects of Blowing Ration (BR) are examined. Four different blowing ratios, 0.5 to 2.0 are examined in this study to explore the capability of sister holes to suppressing the growth of counter-rotating vortex pair (CRVP) associated with the ejected cooling air, then enhancing the cooling air attachment to the flat plate surface. In order to investigate the film effectiveness, a steady-state method using a high-resolution infrared camera is adopted. Mainstream temperature and secondary air temperature is measured by K-type thermocouple. From the experiment, it is found that sister holes are able to increase film effectiveness

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: gas turbine cooling technology; film cooling; shallow hole; sister holes
Subjects: T Technology > TJ Mechanical engineering and machinery > TJ751-805 Miscellaneous motors and engines
Divisions: Faculty of Mechanical and Manufacturing Engineering > Department of Plant and Automotive Engineering
Depositing User: Mrs. Nurhayati Ali
Date Deposited: 10 May 2015 06:45
Last Modified: 10 May 2015 06:45
URI: http://eprints.uthm.edu.my/id/eprint/6311
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