Pressure-sensitive paint measurements in a shock tube

Surface pressures were measured in the short duration, transient flow environment of a small-scale, low pressure-ratio shock tube using thin-film pressure-sensitive paint (PSP). Issues regarding coating formulation, measurement uncertainty, optical system design, and temperature and illumination com...

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Bibliographic Details
Published in:Experiments in fluids 2000-01, Vol.28 (1), p.21-28
Main Authors: HUBNER, J. P, CARROLL, B. F, SCHANZE, K. S, JI, H. F
Format: Article
Language:English
Subjects:
Compressible flows
shock and detonation phenomena
Exact sciences and technology
Fluid dynamics
Fundamental areas of phenomenology (including applications)
Instrumentation for fluid dynamics
Physics
Shock-wave interactions and shock effects
Shock-wave interactions and shockeffects
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Summary:Surface pressures were measured in the short duration, transient flow environment of a small-scale, low pressure-ratio shock tube using thin-film pressure-sensitive paint (PSP). Issues regarding coating formulation, measurement uncertainty, optical system design, and temperature and illumination compensation are discussed. The pressure measurements were acquired during steady flow conditions following the passage of normal shocks and expansion regions along a flat sidewall and a wedge sidewall. The PSP characteristic response time was 3 to 6 ms. Overall pressure uncertainty for the shock tube measurements ranged up to 5 percent over one atmosphere and compared well with theoretical estimates of uncertainty. (Author)
ISSN:0723-4864
1432-1114
DOI:10.1007/s003480050003