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dc.contributor.author
Gräf, Lars
dc.contributor.author
Kleiser, Leonhard
dc.date.accessioned
2020-07-08T09:11:23Z
dc.date.available
2017-06-11T01:22:18Z
dc.date.available
2020-07-08T09:11:23Z
dc.date.issued
2014-01
dc.identifier.issn
0889-504X
dc.identifier.issn
1528-8900
dc.identifier.other
10.1115/1.4024648
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/76123
dc.description.abstract
A film-cooling configuration generating an antikidney vortex pair is studied. The configuration features cylindrical cooling holes inclined at an angle of α = 35 deg and arranged in two spanwise rows with row-wise alternating yaw angles ±β. Results of several largeeddy simulations are presented with varying blowing conditions and yaw angles. The effects on the achieved cooling and the generated losses are studied. The film-cooling Reynolds number (based on the fully turbulent hot boundary layer along a flat plate and the cooling hole diameter) is 6570 and the Mach number is 0.2. The density as well as mass-flux ratios (DR and M) range from 1 to 2 and the yaw angles from β = ±30 deg to ±60 deg. We identify scaling parameters and explain relevant mechanisms. Moreover, the flow field is subdivided into three regions featuring different physical mechanisms: the single-jet, the jet-interaction, and the diffusion region. A strong antikidney vortex pair occurs for high momentum ratios I. For the highest ratio, I=2.3, our configuration may provide even better effectiveness than cooling with particular fan-shaped holes. © 2014 by ASME.
en_US
dc.language.iso
en
en_US
dc.publisher
American Society of Mechanical Engineers
en_US
dc.subject
Film cooling
en_US
dc.subject
Antikidney vortex pair
en_US
dc.subject
Double jet
en_US
dc.subject
Large-eddy simulation
en_US
dc.subject
Blowing condition
en_US
dc.subject
Yaw angle
en_US
dc.subject
Cooling performance
en_US
dc.subject
Losses
en_US
dc.title
Film Cooling Using Antikidney Vortex Pairs: Effect of Blowing Conditions and Yaw Angle on Cooling and Losses
en_US
dc.type
Journal Article
dc.date.published
2013-09-20
ethz.journal.title
Journal of Turbomachinery
ethz.journal.volume
136
en_US
ethz.journal.issue
1
en_US
ethz.journal.abbreviated
J. Turbomach
ethz.pages.start
011008
en_US
ethz.size
8 p.
en_US
ethz.identifier.wos
ethz.publication.place
New York, NY
en_US
ethz.publication.status
published
en_US
ethz.date.deposited
2017-06-11T01:25:49Z
ethz.source
ECIT
ethz.identifier.importid
imp5936514f98a4c96715
ethz.ecitpid
pub:120377
ethz.eth
yes
en_US
ethz.availability
Metadata only
en_US
ethz.rosetta.installDate
2017-07-14T18:01:20Z
ethz.rosetta.lastUpdated
2022-03-29T02:36:26Z
ethz.rosetta.versionExported
true
ethz.COinS
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