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dc.contributor.author
Chasoglou, Alexandros
dc.contributor.author
Tsirikoglou, Panagiotis
dc.contributor.author
Kalfas, Anestis
dc.contributor.author
Abhari, Reza S.
dc.date.accessioned
2021-06-21T07:15:53Z
dc.date.available
2021-06-18T03:46:16Z
dc.date.available
2021-06-18T14:31:40Z
dc.date.available
2021-06-18T15:05:53Z
dc.date.available
2021-06-21T07:15:53Z
dc.date.issued
2021-07
dc.identifier.issn
0889-504X
dc.identifier.issn
1528-8900
dc.identifier.other
10.1115/1.4050360
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/490241
dc.description.abstract
This study describes the design, development, and testing of a miniature fast response aerodynamic probe (FRAP) with four sensors (4S), which are able to perform measurements in the unsteady three-dimensional flow field. Moreover, the calibration and first results with the newly developed probe are provided. The miniature FRAP-4S demonstrates a 3 mm tip diameter, offering a 25% reduction in diameter size, in comparison to a first-generation FRAP-4S, without any loss in terms of measurement bandwidth. The 3 mm outer casing of the probe is additively manufactured with a high-precision binder jetting technique. In terms of aerodynamic performance, the probe demonstrates high angular sensitivity up to ±18 deg incidence angle in both directions. To evaluate the measurement accuracy of the newly developed FRAP-4S, measurements are performed at the Laboratory for Energy Conversion (LEC) in both a round axisymmetric jet and an one-and-a-half stage, unshrouded and highly loaded axial turbine configuration. Turbulence measurements performed with the miniature FRAP-4S are compared against hot-wire studies in round freejets found in the literature. Good agreement in both trends but also absolute values is demonstrated. Moreover, the performance of the probe is compared against traditional instrumentation developed at LEC, namely, miniature pneumatic and FRAP-2S probes. The results indicate that the FRAP-4S, despite its larger size in comparison to the other probes tested, can resolve the main flow patterns, with the highest deviations occuring in the presence of highly skewed and sheared flow. Furthermore, the additively manufactured probe was proven to be robust after more than 50 hours of testing in the representative turbine environment configuration. Finally, it should be highlighted that the newly developed FRAP reduces measurement time by a factor of three in comparison to FRAP-2S, which directly translates to reduced development time and thus cost during the turbomachinery development phase.
en_US
dc.language.iso
en
en_US
dc.publisher
ASME
en_US
dc.subject
fast response aerodynamic probes
en_US
dc.subject
FRAP
en_US
dc.subject
multisensor pressure probe
en_US
dc.subject
Additive manufacturing
en_US
dc.subject
Unsteady flows
en_US
dc.subject
Measurement techniques
en_US
dc.subject
High-pressure turbine
en_US
dc.subject
Turbulence measurements
en_US
dc.subject
Turbine blade and measurement advancements
en_US
dc.title
An additively manufactured four-sensor fast response aerodynamic probe
en_US
dc.type
Journal Article
dc.date.published
2021-04-09
ethz.journal.title
Journal of Turbomachinery
ethz.journal.volume
143
en_US
ethz.journal.issue
7
en_US
ethz.journal.abbreviated
J. Turbomach
ethz.pages.start
071004
en_US
ethz.size
10 p.
en_US
ethz.notes
Paper No: TURBO-20-1339
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
New York , NY
en_US
ethz.publication.status
published
en_US
ethz.date.deposited
2021-06-18T03:46:28Z
ethz.source
SCOPUS
ethz.eth
yes
en_US
ethz.availability
Metadata only
en_US
ethz.rosetta.installDate
2021-06-18T14:31:50Z
ethz.rosetta.lastUpdated
2022-03-29T08:51:57Z
ethz.rosetta.versionExported
true
ethz.COinS
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