Laminar separation bubble analysis by means of single–shot lifetime temperature sensitive paint in a water towing tank
A laminar separation bubble is studied on an SD7003 foil in a water towing tank at a Reynolds number of 6 ⋅ 10 4 and an angle of attack of 6 ∘ by means of the temperature sensitive paint single-shot lifetime method in order to resolve the footprints and dynamics of vortical structures at low inflow...
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Veröffentlicht in: | Measurement science & technology 2024-07, Vol.35 (7), p.75301 |
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Hauptverfasser: | , , , , |
Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | A laminar separation bubble is studied on an SD7003 foil in a water towing tank at a Reynolds number of
6
⋅
10
4
and an angle of attack of 6
∘
by means of the temperature sensitive paint single-shot lifetime method in order to resolve the footprints and dynamics of vortical structures at low inflow turbulence levels. A heat flux is created by applying a carbon based heating layer on the suction side of the foil. The influence of the surface heating on the transition behaviour is analyzed using 2D2C-PIV and found to be negligible. The results demonstrate the capability of the single-shot lifetime method to quantify salient time-averaged flow characteristics, as well as to resolve and characterize the footprints of the dominant coherent structures. |
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ISSN: | 0957-0233 1361-6501 |
DOI: | 10.1088/1361-6501/ad3a85 |