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Sensors 2016, 16(3), 344;

Measuring Surface Pressure on Rotating Compressor Blades Using Pressure Sensitive Paint

Competence Center for Gas Exchange (CCGEx), KTH Mechanics, SE-100 44 Stockholm, Sweden
Author to whom correspondence should be addressed.
Academic Editor: Markus W. Sigrist
Received: 13 January 2016 / Revised: 16 February 2016 / Accepted: 1 March 2016 / Published: 8 March 2016
(This article belongs to the Section Physical Sensors)
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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. View Full-Text
Keywords: pressure sensitive paint; PSP; turbo charger; compressor pressure sensitive paint; PSP; turbo charger; compressor

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Pastuhoff, M.; Tillmark, N.; Alfredsson, P.H. Measuring Surface Pressure on Rotating Compressor Blades Using Pressure Sensitive Paint. Sensors 2016, 16, 344.

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