Laminar separation bubble analysis by means of single–shot lifetime temperature sensitive paint in a water towing tank

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
Hauptverfasser: Venenciuc, Tudor V, Klein, Christian, Yarusevych, Serhiy, Hain, Rainer, Kähler, Christian J
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creator Venenciuc, Tudor V
Klein, Christian
Yarusevych, Serhiy
Hain, Rainer
Kähler, Christian J
description 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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title Laminar separation bubble analysis by means of single–shot lifetime temperature sensitive paint in a water towing tank
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