Automotive testing using pressure-sensitive paint

Abstract

Abs ract : Measurements of the surface pressure on a simplified automobile model have been performed using pressure-sensitive paint (PSP). The program was undertaken to investigate the use of commercial and in-house PSP at low speed (between 11 m/s and 92 m/s) and to find techniques to improve the measurement accuracy. A comparison of a priori and in situ calibration methods was also conducted. A linear in situ calibration or a priori methods combined with one tap pressure, correcting for bias errors, were found to provide the best accuracy. t

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

“…In contrast to almost all the organic fluorophores, they have a long fluorescence lifetime (t 0 200 ns), so that oxygen quenching plays a role in their deactivation mechanism. They also display strong fluorescence with high quantum yield and low temperature sensitivity ( 0.2 per cent/8C at p ¼ 1 bar) [46]. However, they usually exhibit severe photodegradation due to sublimation/evaporation or due to UV irradiation [47].…”

Pressure-Sensitive Paint Measurements on a Moving Store in the NRC 1.5 m Blowdown Wind Tunnel

“…6 This solution was adopted in the following, and the overall processing pipeline is illustrated in Figure 7. …”

Application of fast-responding pressure-sensitive paint to a hemispherical dome in unsteady transonic flow

“…Pyrene derivatives have been found to have strong fluorescence traits with high quantum yield and low temperature sensitivity. 26 However, they usually suffer from severe degradation due to sublimation/evaporation or UV irradiation. 27…”