ZHANG Chao, WANG Zhan, ZHOU Si-jing, et al. Calibration of pressure-sensitive paint and application to the measurement of film cooling effectiveness[J]. 2011, 26(12).
ZHANG Chao, WANG Zhan, ZHOU Si-jing, et al. Calibration of pressure-sensitive paint and application to the measurement of film cooling effectiveness[J]. 2011, 26(12).DOI:
Calibration of pressure sensitive paint was carried out by using the self-designed calibration setup.The influence of excitation light intensity and temperature on the calibration curve was investigated.The experimental results showed that the effect of excitation light intensity was negligible when the excitation light intensity was sufficient to cause the oxygen quenching of luminescent molecules
but the calibration curve was more sensitive to the temperature change.The expression of emission light intensity about pressure ratio and temperature ratio was proposed based on two-dimensional interpolation method
and the measurement results were corrected to account for temperature change effects.Then the pressure sensitive paint technology was applied to the film cooling effectiveness measurement of cylinder film hole and fan-shaped film hole
and the experimental results compared well with the previous experimental data.