Verification of Thermal Models of Internally Cooled Gas Turbine Blades
Joint Authors
Shevchenko, Igor
Rogalev, Nikolay
Rogalev, Andrey
Vegera, Andrey
Bychkov, Nikolay
Source
International Journal of Rotating Machinery
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-04-23
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
Numerical simulation of temperature field of cooled turbine blades is a required element of gas turbine engine design process.
The verification is usually performed on the basis of results of test of full-size blade prototype on a gas-dynamic test bench.
A method of calorimetric measurement in a molten metal thermostat for verification of a thermal model of cooled blade is proposed in this paper.
The method allows obtaining local values of heat flux in each point of blade surface within a single experiment.
The error of determination of local heat transfer coefficients using this method does not exceed 8% for blades with radial channels.
An important feature of the method is that the heat load remains unchanged during the experiment and the blade outer surface temperature equals zinc melting point.
The verification of thermal-hydraulic model of high-pressure turbine blade with cooling allowing asymmetrical heat removal from pressure and suction sides was carried out using the developed method.
An analysis of heat transfer coefficients confirmed the high level of heat transfer in the leading edge, whose value is comparable with jet impingement heat transfer.
The maximum of the heat transfer coefficients is shifted from the critical point of the leading edge to the pressure side.
American Psychological Association (APA)
Shevchenko, Igor& Rogalev, Nikolay& Rogalev, Andrey& Vegera, Andrey& Bychkov, Nikolay. 2018. Verification of Thermal Models of Internally Cooled Gas Turbine Blades. International Journal of Rotating Machinery،Vol. 2018, no. 2018, pp.1-10.
https://search.emarefa.net/detail/BIM-1175602
Modern Language Association (MLA)
Shevchenko, Igor…[et al.]. Verification of Thermal Models of Internally Cooled Gas Turbine Blades. International Journal of Rotating Machinery No. 2018 (2018), pp.1-10.
https://search.emarefa.net/detail/BIM-1175602
American Medical Association (AMA)
Shevchenko, Igor& Rogalev, Nikolay& Rogalev, Andrey& Vegera, Andrey& Bychkov, Nikolay. Verification of Thermal Models of Internally Cooled Gas Turbine Blades. International Journal of Rotating Machinery. 2018. Vol. 2018, no. 2018, pp.1-10.
https://search.emarefa.net/detail/BIM-1175602
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1175602