Abstract
Abstract
This paper presents the performance of pressure-sensitive paint (PSP) for the direct measurement of species concentration on a porous surface with mass injection. It is used to measure the ability of an injected gas to reduce the mass transfer of freestream species to the surface. A porous alumina sample was sprayed with a PSP luminophore solution. The sample was installed into a flat plate model and exposed to hypersonic cross-flows in the Oxford High-Density Tunnel. Tests were conducted with no coolant injection, air injection, and nitrogen injection at increasing blowing ratios. Oxygen partial pressure maps on the transpiration-cooled surface were obtained for several conditions at unit Reynolds numbers between $$2.58{-}5.0 \times 10^7/ \mathrm{m}$$
2.58
-
5.0
×
10
7
/
m
and blowing ratios between $$0.016{-}0.078\%$$
0.016
-
0.078
%
. The oxygen pressure decreases as the unit Reynolds number decreases and the blowing ratio increases.
Graphic abstract
Funder
Engineering and Physical Sciences Research Council
Publisher
Springer Science and Business Media LLC
Subject
Fluid Flow and Transfer Processes,General Physics and Astronomy,Mechanics of Materials,Computational Mechanics
Reference15 articles.
1. Ahn J, Mhetras S, Han JC (2005) Film-cooling effectiveness on a gas turbine blade tip using pressure-sensitive paint. J Heat Transf 127(5):521–530
2. Anthony R, Oldfield M, Jones T, LaGraff J (1999) Development of high-density arrays of thin film heat transfer gauges. In: Proceedings of the 5th ASME/JSME thermal engineering joint conference, San Diego, AJTE99-6159
3. Bashir MH, Shiau CC, Han JC (2017) Film cooling effectiveness for three-row compound angle hole design on flat plate using PSP technique. Int J Heat Mass Transf 115:918–929
4. Ewenz Rocher M, Hermann T, McGilvray M, Ifti H, Quinn M (2019a) Studying the film effectiveness of transpiration-cooled walls using pressure sensitive paint. In: FAR conference, Monopoli, p 294
5. Ewenz Rocher M, McGilvray M, Hermann TA, Ifti HS, Hufgard F, Eberhart MF, Meindl A, Loehle S, Giovannini T, Vandeperre LJ (2019b) Testing a transpiration-cooled zirconium-di-boride sample in the plasma tunnel at IRS. In: AIAA Scitech 2019 forum, p 1552
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