Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 222, Issue -, Pages 141-150Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2015.08.070
Keywords
Pressure-sensitive paint; Temperature-sensitive paint
Funding
- Gas Turbine Research Institute of Shanghai Jiao Tong University
Ask authors/readers for more resources
A novel combined pressure- and temperature-sensitive paint system has been developed for simultaneous pressure and temperature measurements using a monochrome camera. This grid-pattern PSP/TSP system consists of an array of PSP dots (PtTFPP in polymer-ceramic binder) on top of a TSP layer (Ru(dpp) in clearcoat). The physical separation of PSP and TSP eliminates problems involving chemical interactions and spectral interference which are commonly seen in dual-luminophore PSPs. Both PSP and TSP are excited by a 400 nm LED and the signals are captured simultaneously by a monochrome chargedcouple device (CCD) camera. The key challenge is to precisely identify PSP and TSP regions from the grid pattern in each image. This has been realized by first creating a sharp environmental change in temperature or oxygen concentration, and then separating PSP region from TSP region based on the difference in intensity-ratio caused by paint properties. Full pressure and temperature fields are recovered by performing 2-D interpolation on PSP and TSP data, and the temperature field is then used to remove the temperature-induced errors in PSP results. This PSP/TSP system has been demonstrated in oblique jet impingement experiments. (C) 2015 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available