Idil Fenercioglu

Idil Fenercioglu
Istanbul Technical University · Department of Astronautical Engineering

PhD

About

18
Publications
2,394
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120
Citations

Publications

Publications (18)
Article
This paper presents a numerical study of a 2D pitching and plunging flat plate foil operating in the vicinity of near side walls. The efects of the side wall proximity and the stroke reversal fraction are compared to previously published water tunnel experimental results and the resulting vortex structures are used to comment on the efect of the co...
Article
Full-text available
Effect of constrained flow is investigated experimentally for a flapping foil power-generator. The flow structures around and in the near wake of a flat plate placed between two side walls are captured via PIV technique with simultaneous direct force measurements in uniform flow at Re = 10 000. The rectangular flat plate oscillates with periodic no...
Conference Paper
Full-text available
Flow structures around and in the near wake of an oscillating-wing power-generator undergoing non-sinusoidal pitch and plunge motions were investigated for various motion parameters. Flow visualizations are performed to reveal the spanwise flow structure evolution of a non-profiled flat plate. The study is performed in a water channel at chord leng...
Article
Power extraction from wind and water streams using flapping wings is known to be an alternative method to harvest renewable energy. The vortical flow structures around and in the wake of a NACA0012 airfoil oscillating with non-sinusoidal pitching and plunging motions are investigated using digital particle image velocimetry and compared with Navier...
Article
Full-text available
Özet Mikro hava araçlarının (MHA) tasarımı ve pratikteki uygulamaları için yapılan çalışmalar, düşük Reynolds sayılı akışlarıdaki araştırmaların önemini arttırmıştır. Su canlıları, kuşlar ve böceklerin etrafındaki akışlardan biyolojik esinlenme ile yaratılabilen itki kuvveti, bu tür hareket mekanizmalarının havacılıkta kullanılabilecek tahrik siste...
Article
The effects of unequal pitching and plunging frequency on the flow structures around a flapping airfoil is investigated using the Digital Particle Image Velocimetry (DPIV) technique in the reduced frequency range of 0.31⩽k⩽0.31⩽k⩽ 6.26 corresponding to Strouhal number range of 0.1⩽ St ⩽ 1.0. The SD7003 airfoil model undergoes a combined flapping mo...
Conference Paper
Power extraction from wind and water streams using flapping wings is known to be an alternative method to harvest renewable energy. The vortical flow structures around and in the wake of a NACA0012 airfoil oscillating with non-sinusoidal pitching and plunging motions are investigated using Digital Particle Image Velocimetry (DPIV) and compared with...
Article
In order to study the forces acting on a flapping wing, an experimental investigation is performed in steady water flow. In this study, a SD7003 airfoil undergoes combined pitching and plunging motion which simulates the forward flight of small birds. The frequency of pitching motion is equal to the frequency of plunging motion and pitch leads the...
Conference Paper
Non-sinusoidal form of the effective angle of attack variation for a pitching and plunging airfoil is investigated using the Digital Particle Image Velocimetry (DPIV) technique to observe multiple vortex formation which degrades performance significantly in regimes of high thrust. A detailed categorization of separated vortex structures from the le...
Article
Quantitative evaluation of time dependent flow structures around and in the near-wake of an oscillating airfoil is investigated using the Digital Particle Image Velocimetry (DPIV) technique to perform a detailed categorization of vortex formations in the reduced frequency range of 0.16≤k≤6.26 corresponding to Strouhal number range of 0.05≤St≤1.0. T...
Chapter
For enhancing coating quality, the shock tunnel technology is employed to achieve impact velocities of particles up to 1500 m/s for 10 μm solid particles. A calibration of the nozzle flow has been carried out by using a Pitot rake. The current conditions in the reservoir achieved so far are p 0=140 bar and T 0 = 1800 K. A high speed schlieren syste...

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