This paper presents and describes the results of an experimental study into the control of separated flow over a NACA0015 airfoil over a range of angles of attack at a Reynolds number of 3 × 104. The study was carried out in the LTRAC 500 mm × 500 mm water tunel. The separation control is actuated using a planar zero-net-mass-flow (ZNMF) jet at the leading edge of the airfoil. The ZNMF micro-jet flow is generated using a piston-cylinder arrangement connected to a skotch-yoke mechanisms that is driven by a computer controlled stepper motor. The parameter range for the planar ZNMF jet ranged from non-dimensional frequency of 0.5 to 1.5 and blowing coefficients up to 0.2. A six component force transducer was used to measure the lift and drag force on the airfoil. Planar laser induced fluoresence (PLIF) using Kyton red dye and Nd:YAG laser illumination was used for the flow visualisations. Multigrid cross-correlation digital PIV (MCCDPIV) with pulsed Nd:YAG laser planar illumination was employed with digital imaging of 4008 px × 2672 px to measure instantenous velocity fields.
Flow Visualisations and PIV Measurements of ZNMF Jet Control of Separated Flow Over NACA0015 Airfoil
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Soria, J, Stephens, T, & Tuck, A. "Flow Visualisations and PIV Measurements of ZNMF Jet Control of Separated Flow Over NACA0015 Airfoil." Proceedings of the ASME 2006 2nd Joint U.S.-European Fluids Engineering Summer Meeting Collocated With the 14th International Conference on Nuclear Engineering. Volume 2: Fora. Miami, Florida, USA. July 17–20, 2006. pp. 749-756. ASME. https://doi.org/10.1115/FEDSM2006-98499
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