Formulation of pressure sensitive paints for unsteady measurements

Soumagne-Schweyckart, I.; Mérienne, Marie-Claire; Ancelle, J.

doi:10.1109/iciasf.2001.960232

Cited by 3 publications

(6 citation statements)

References 6 publications

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“…The Pt(OEP) luminophore exhibited greater pressure sensitivity. The response times of the polymer/ceramic paint formulations developed by Scroggin were on the order of 60 ms. Soumagne-Schweyckart et al [30] also developed a PSP formulation based on hard particles, where alumina was used to bind silica particles to the model. Pyrene derivatives were used as the luminophore, and the paint was airbrushed onto the model.…”

Section: Polymer/ceramicmentioning

confidence: 99%

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A review of pressure-sensitive paint for high-speed and unsteady aerodynamics

Gregory

Asai

Kameda

et al. 2008

Proceedings of the Institution of Mechanical Engineers, Part G:

343

176

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Abstract:The current paper describes the development of pressure-sensitive paint (PSP) technology as an advanced measurement technique for unsteady flow fields and short-duration wind tunnels. Newly developed paint formulations have step response times approaching 1 ms, making them suitable for a wide range of unsteady testing. Developments in binder technology are discussed, which have resulted in new binder formulations such as anodized aluminium, thin-layer chromatography plate, polymer/ceramic, and poly(TMSP) PSP. The current paper also details modeling work done to describe the gas diffusion properties within the paint binder and understand the limitations of the paint response characteristics. Various dynamic calibration techniques for PSP are discussed, along with summaries of typical response times. A review of unsteady and high-speed PSP applications is presented, including experiments with shock tubes, hypersonic tunnels, unsteady delta wing aerodynamics, fluidic oscillator flows, Hartmann tube oscillations, acoustics, and turbomachinery. Flowfields with fundamental frequencies as high as 21 kHz have been successfully measured with porous PSP formulations.

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Section: Polymer/ceramicmentioning

confidence: 99%

“…Soumagne-Schweyckart et al [30] also developed a PSP formulation based on hard particles, where alumina was used to bind silica particles to the model. Pyrene derivatives were used as the luminophore, and the paint was airbrushed onto the model.…”

Section: Polymer/ceramicmentioning

confidence: 99%

A review of pressure-sensitive paint for high-speed and unsteady aerodynamics

Gregory

Asai

Kameda

et al. 2008

Proceedings of the Institution of Mechanical Engineers, Part G:

343

176

View full text Add to dashboard Cite

show abstract

“…Successive measurements performed on PBA samples after a cycle of ambient pressure and vacuum led to a decrease of the emitted intensity. This phenomenon has already been observed on porous surfaces such as alumina [14] and silica [11] and has been associated with the desorption of water molecules adsorbed at the surface. This phenomenon can be controlled by a co-adsorption of a non-luminescent compound [16,11].…”

Section: Anodized-aluminium Coatingsmentioning

confidence: 65%

“…The pyrene molecule is chosen as a luminescent sensor because of its high quantum efficiency (0.65), a good pressure sensitivity (up to 90%/ 100 kPa) and a low temperature sensitivity (<0.3% • C −1 ). A lot of work has been done at ONERA on the luminescence of the pyrene molecule and pyrene derivatives in order to control the feature of pyrene-based PSPs [5,6] with applications in wind tunnels at low speed [7,8] and supersonic conditions [9].…”

Section: Introductionmentioning

confidence: 99%

“…Reducing the PSP response time requires an increase in the oxygen diffusion in the paint, thus increasing the porosity. Scroggin [10] has conducted research on a polymer ceramic composite while Soumagne-Schweyckart [11] at ONERA focused her work on coatings made of pyrene derivative covalently linked to silica particles. Despite a response time (t 99 ) below 3 ms, no further research is now conducted on this type of coating because of its poor pressure sensitivity (around 50%/100 kPa) and too high a roughness level, which depends directly on the silica particle size.…”

Section: Introductionmentioning

confidence: 99%

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Unsteady pressure measurement instrumentation using anodized-aluminium PSP applied in a transonic wind tunnel

Mérienne

Sant

Ancelle

et al. 2004

Meas. Sci. Technol.

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The objective of this work is to demonstrate the feasibility of pressure measurement instrumentation using anodized-aluminium pressure-sensitive paint (or AA-PSP) for application in unsteady flows. An anodized procedure was applied to an aluminium tape that can be easily placed on a model even when it is mounted in a wind tunnel. The response time of the PSP coating is assessed using a calibration rig that generates fast pressure steps or sinusoidal pressure fluctuations up to 1 kHz. A pointwise measurement system made with a Cassegrain telescope and a photomultiplier tube was designed to collect the PSP luminescence. The spot displacement on the model surface was carried out by using a 3D moving bench. A camera is used to identify the spot position according to the model geometry. An application in a wind tunnel was performed on a forced shock wave oscillation test, generating amplitude variations up to 25 kPa. The calibration problem due to non-uniformity of the anodized properties did not allow quantitative data processing of pressure levels. Nevertheless frequency analysis demonstrates that the coating is able to follow the pressure fluctuations, as shown by comparison with standard pressure transducers.

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