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Shower Head and Trailing Edge Cooling Influence on Transonic Vane Aero Performance
KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Heat and Power Technology.ORCID iD: 0000-0001-5162-2289
KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Heat and Power Technology.ORCID iD: 0000-0002-1033-9601
KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Heat and Power Technology.
(Siemens LLC Energy Oil & Gas Design Department, Russia)
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2014 (English)In: ASME Turbo Expo 2014: Turbine Technical Conference and Exposition, ASME Press, 2014Conference paper, Published paper (Refereed)
Abstract [en]

An experimental investigation on a cooled nozzle guide vane has been conducted in an annular sector to quantify aerodynamic influences of shower head and trailing edge cooling. The investigated vane is a typical high pressure gas turbine vane, geometrically similar to a real engine component, operated at a reference exit Mach number of 0.89. The investigations have been performed for various coolant-to-mainstream mass-flux ratios. New loss equations are derived and implemented regarding coolant aerodynamic losses. Results lead to a conclusion that both trailing edge cooling and shower head film cooling increase the aerodynamic loss compared to an uncooled case. In addition, the trailing edge cooling has higher aerodynamic loss compared to the shower head cooling. Secondary losses decrease with inserting shower head film cooling compared to the uncooled case. The trailing edge cooling appears to have less impact on the secondary loss compared to the shower head cooling. Area-averaged exit flow angles around midspan increase for the trailing edge cooling.

Place, publisher, year, edition, pages
ASME Press, 2014.
Keyword [en]
Aerodynamic loss, Film cooling, Nozzle guide vane, Shower head cooling, Trailing edge cooling
National Category
Aerospace Engineering Applied Mechanics Energy Engineering
Research subject
Aerospace Engineering; Energy Technology
Identifiers
URN: urn:nbn:se:kth:diva-148423DOI: 10.1115/GT2014-25613ISI: 000361923200018Scopus ID: 2-s2.0-84922224108ISBN: 978-079184562-2 (print)OAI: oai:DiVA.org:kth-148423DiVA: diva2:736548
Conference
ASME Turbo Expo 2014: Turbine Technical Conference and Exposition, GT 2014, Dusseldorf, Germany, 16 June 2014 through 20 June 2014
Projects
Sector rig
Note

QC 20150217

Available from: 2014-08-07 Created: 2014-08-07 Last updated: 2015-10-29Bibliographically approved

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Saha, RanjanFridh, Jens

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