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Measuring surface pressure on rotating compressor blades using pressure sensitive paint
KTH, School of Engineering Sciences (SCI), Mechanics. KTH, School of Industrial Engineering and Management (ITM), Centres, Competence Center for Gas Exchange (CCGEx).
KTH, School of Engineering Sciences (SCI), Mechanics. KTH, School of Industrial Engineering and Management (ITM), Centres, Competence Center for Gas Exchange (CCGEx).
KTH, School of Engineering Sciences (SCI), Mechanics. KTH, School of Industrial Engineering and Management (ITM), Centres, Competence Center for Gas Exchange (CCGEx). (Henrik Alfredsson)ORCID iD: 0000-0002-1146-3241
2016 (English)In: Sensors, ISSN 1424-8220, E-ISSN 1424-8220, Vol. 16, no 3, 344Article in journal (Refereed) PublishedText
Abstract [en]

Pressure sensitive paint (PSP) was used to measure pressure on the blades of a radial compressor with a 51 mm inlet diameter rotating at speeds up to 50 krpm using the so called lifetime method. A diode laser with a scanning-mirror system was used to illuminate the paint and the luminescent lifetime was registered using a photo multiplier. With the described technique the surface-pressure fields were acquired for eight points in the compressor map, useful for general understanding of the flow field and for CFD validation. The PSP was of so called fast type, which makes it possible to observe pressure variations with frequencies up to several kHz. Through frequency spectrum analysis we were able to detect the pulsating flow frequency when the compressor was driven to surge.

Place, publisher, year, edition, pages
MDPI AG , 2016. Vol. 16, no 3, 344
Keyword [en]
Compressor, Pressure sensitive paint, PSP, Turbo charger
National Category
Fluid Mechanics and Acoustics
Identifiers
URN: urn:nbn:se:kth:diva-187304DOI: 10.3390/s16030344ISI: 000373713600015ScopusID: 2-s2.0-84960470161OAI: oai:DiVA.org:kth-187304DiVA: diva2:929617
Note

QC 20160519

Available from: 2016-05-19 Created: 2016-05-19 Last updated: 2016-06-08Bibliographically approved

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Pastuhoff, MarkusTillmark, NilsAlfredsson, P. Henrik
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