Development of new two-component temperature-sensitive paint (TSP) for cryogenic testing
Egami, Yasuhiro and Fey, Uwe and Klein, Christian and Quest, Jürgen and Ondrus, Vladimir and Beifuss, Uwe (2012) Development of new two-component temperature-sensitive paint (TSP) for cryogenic testing. Measurement Science and Technology, Vol. 23 (11, Paper 115301), pp. 1-10. IOP PUBLISHING. DOI: http://dx.doi.org/10.1088/0957-0233/23/11/115301. ISSN 0957-0233.
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Official URL: http://stacks.iop.org/MST/23/115301
Two-component temperature-sensitive paint (TSP) for cryogenic wind tunnels has been newly developed to extend the highest working temperature up to 320 K, whereas a conventional single-component cryoTSP operates in the temperature range from 100 to 240 K. The two-component cryoTSP includes two luminophores: a ruthenium complex (Ru(trpy)2) and a europium complex, which are very temperature sensitive in the range of 100–240 K and 220–320 K, respectively. The ruthenium complex is excited by blue light while the europium complex requires UV light. One can thence operate the two luminophores independently by illuminating the paint at different wavelengths. Both luminophores emit red light, so that it is possible to use a single camera filter to observe both luminophores. Verification tests at different cryogenic wind tunnels proved that the two-component cryoTSP could detect a boundary layer transition line even up to room temperatures with only a single coating. This means that it is neither necessary to apply a different TSP coating to a model nor use an infrared camera when the wind tunnel is operated at room temperatures. As a result, the two-component cryoTSP enables one to save time and money in cryogenic testing.
|Title:||Development of new two-component temperature-sensitive paint (TSP) for cryogenic testing|
|Journal or Publication Title:||Measurement Science and Technology|
|In ISI Web of Science:||Yes|
|Page Range:||pp. 1-10|
|Keywords:||temperature-sensitive paint, transition detection, laminar–turbulent flows, cryogenic wind tunnel, aerodynamics, image-based measurement technique, molecular imaging|
|HGF - Research field:||Aeronautics, Space and Transport|
|HGF - Program:||Aeronautics|
|HGF - Program Themes:||L AR - Aircraft Research|
|DLR - Research area:||Aeronautics|
|DLR - Program:||L AR - Aircraft Research|
|DLR - Research theme (Project):||L - Simulation & Validation|
|Institutes and Institutions:||Institute of Aerodynamics and Flow Technology > Experimental Methods|
|Deposited By:||Ilka Micknaus|
|Deposited On:||08 Oct 2012 15:44|
|Last Modified:||26 Mar 2013 13:20|
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