Abstract
The dual luminophore pressure/temperature sensitive paint (DPTSP) has been developed to correct the temperature dependence of pressure-sensitive paint (PSP). The DPTSP is composed of two luminophores, whose emissions are available for pressure and temperature measurements. In order to correct temperature dependence of the PSP, both emissions are measured simultaneously by using two CCD cameras with different filter wavelengths. The DPTSP developed in this study was composed of PtTFPP and Coumarin307. The emission wavelengths of PtTFPP and Coumarin307 were so separated that the interference of emissions could be neglected. In addition the present DPTSP could be applied to a wide temperature range. This paint was resolved in thinner so that it could be coated on the model surface smoothly. To validate the performance of DPTSP for temperature correction, the pressure and temperature fields induced by sonic-jet impingement were measured by the present DPTSP system. The temperature-corrected PSP data agreed well with the pressure tap data.
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