Turkish Journal of Engineering

Turkish Journal of Engineering

EXPERIMENTAL INVESTIGATION OF FLOW STRUCTURE DOWNSTREAM OF PERMEABLE CYLINDERS

Yazarlar: Bengi ŞANLI, Hüseyin Akıllı

Cilt 2 , Sayı 2 , 2018 , Sayfalar 54 - 59

Konular:Mühendislik

DOI:10.31127/tuje.349532

Anahtar Kelimeler:PIV,Vortex shedding,Permeable cylinder

Özet: Flow structure downstream of permeable cylinders was investigated using high-image density Particle Image Velocimetry technique in deep water. The free stream velocity is U∞= 156 mm/s, which corresponds to the Reynolds number of Re=6250 based on the cylinder diameter D=37.5 mm. To reveal the effect of the porosity, four different porosities (β= 0.4, 0.5, 0.6 and 0.7) were used. This study showed that the usage of permeable cylinder decreases the occurrence of large-scale vortical structures downstream of the bluff body. As the porosity increases, turbulent kinetic energy, Reynolds shear stress and intensity of turbulences decrease as a sign of attenuated fluctuations in the wake region. For the permeable cylinders having the porosity higher than 0.6, the flow behaves as there is no object in flow. 

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@article{2018, title={EXPERIMENTAL INVESTIGATION OF FLOW STRUCTURE DOWNSTREAM OF PERMEABLE CYLINDERS}, volume={2}, number={2}, publisher={Turkish Journal of Engineering}, author={Bengi ŞANLI,Hüseyin Akıllı}, year={2018}, pages={54–59} }
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Bengi ŞANLI,Hüseyin Akıllı. (2018). EXPERIMENTAL INVESTIGATION OF FLOW STRUCTURE DOWNSTREAM OF PERMEABLE CYLINDERS (Vol. 2, pp. 54–59). Vol. 2, pp. 54–59. Turkish Journal of Engineering.
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Bengi ŞANLI,Hüseyin Akıllı. EXPERIMENTAL INVESTIGATION OF FLOW STRUCTURE DOWNSTREAM OF PERMEABLE CYLINDERS. no. 2, Turkish Journal of Engineering, 2018, pp. 54–59.
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