NDLI: Microtextured surfaces for turbine blade impingement cooling

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Microtextured surfaces for turbine blade impingement cooling

Content Provider	NASA Technical Reports Server (NTRS)
Author	Fryer, Jack
Copyright Year	2014
Description	Gas turbine engine technology is constantly challenged to operate at higher combustor outlet temperatures. In a modern gas turbine engine, these temperatures can exceed the blade and disk material limits by 600 F or more, necessitating both internal and film cooling schemes in addition to the use of thermal barrier coatings. Internal convective cooling is inadequate in many blade locations, and both internal and film cooling approaches can lead to significant performance penalties in the engine. Micro Cooling Concepts, Inc., has developed a turbine blade cooling concept that provides enhanced internal impingement cooling effectiveness via the use of microstructured impingement surfaces. These surfaces significantly increase the cooling capability of the impinging flow, as compared to a conventional untextured surface. This approach can be combined with microchannel cooling and external film cooling to tailor the cooling capability per the external heating profile. The cooling system then can be optimized to minimize impact on engine performance.
File Size	119995
Page Count	1
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_20150005306
Archival Resource Key	ark:/13960/t1zd2xj2z
Language	English
Publisher Date	2014-11-01
Access Restriction	Open
Subject Keyword	Aircraft Propulsion And Power Convective Heat Transfer Component Reliability Turbine Blades Gas Turbine Engines Cooling Systems Thermal Fatigue High Temperature Environments Design Optimization Microchannels Thermal Control Coatings Impingement Product Development Film Cooling Government/industry Relations Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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