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Effects of blowing ratio on the heat transfer coefficient distribution downstream of a single film cooling hole


Citation

Abu Talib, Abd Rahim and Jaafar, Abdul Aziz and Mokhtar, Ahmad Samsuri and Abd. Rahim, Irfan and Abdul Karim, M. S. (2006) Effects of blowing ratio on the heat transfer coefficient distribution downstream of a single film cooling hole. In: Seminar on Engineering and Technology (SET2006) , 4-5 Sept. 2006, Putrajaya, Malaysia. (pp. 425-435).

Abstract / Synopsis

Detailed distributions of heat transfer coefficients downstream of a single film cooling hole were presented. The film cooling hole has an angle of inclination of 45° and a circular shape diameter of 10 mm. Tests were conducted in a purpose built heat transfer rig at the Department of Aerospace Engineering, UPM. The rig has been modified to conduct transient heat transfer testing using thermochromic liquid crystal technique. A single narrow-band liquid crystal was used to map the distribution of heat transfer coefficient downstream of a single film cooling hole at a blowing ratio ranging between 0.5-0.94. The detailed heat transfer coefficient distributions provide a clear understanding of free jet-mainstream flow interactions for different blowing ratio. Results shows that blowing ratio of 0.64 provides a better cooling protection compared to the other blowing ratios tested.


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Additional Metadata

Item Type: Conference or Workshop Item (Paper)
Divisions: Faculty of Engineering
Publisher: Federation of Engineering Institutions of Islamic Countries
Keywords: Heat transfer coefficient; Film cooling; Thermochromic liquid crystal; Blowing ratio
Depositing User: Erni Suraya Abdul Aziz
Date Deposited: 20 Aug 2015 16:10
Last Modified: 20 Aug 2015 16:10
URI: http://psasir.upm.edu.my/id/eprint/39737
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