Author/Authors :
akar, mustafa atakan çukurova üniversitesi - mühendislik-mimarlık fakültesi - otomotiv mühendisliği, Adana, Turkey , akilli, hüseyin mühendislik-mimarlık fakültesi - çukurova üniversitesi - makine mühendisliği bölümü, Adana, turkey , baş, oğuz çukurova üniversitesi - mühendislik-mimarlık fakültesi - otomotiv mühendisliği, Adana, Turkey , oğuz, burcu mersin üniversitesi - denizcilik meslek yüksek okulu - gemi makineleri işletme programı, Mersin, Turkey , pinar, engin çukurova üniversitesi - ceyhan mühendislik fakültesi - makine mühendisliği, Adana, Turkey , şahin, beşir çukurova üniversitesi - mühendislik mimarlık fakültesi - makine mühendisliği bölümü, Adana, Turkey
Abstract :
In this paper, flow changes were observed via Particulate Image Velocimetry (PIV) technique in shallow water flow for two side by side circular cylinders which a vertically placed splitter plate (VSP) was placed between them. The circular cylinders made of acrylic material have a diameter of 𝐷=40 mm. Throughout the experiments water height was ℎ𝑤=20 mm and flow images were taken at the elevation of ℎ𝐿=10 mm. The free stream velocity was 𝑈∞=125 mm/sec and Reynolds Number was 𝑅𝑒𝐷=5000 based on diameters of circular cylinders. Five different VSPs varied from heights of 𝐻=2 mm to 10 mm with an increment 2 mm were used to control unsteady flow. The gap/diameter ratio was 𝐺𝐷=1.25⁄ for all cases. Dimensionless Turbulence Kinetic Energy values and time-averaged velocity vectors were acquired by processing experimentally obtained data on a computer. As a result, the usage of splitter plate has shown its effectiveness on flow control. After the plate height of 𝐻=6 mm, TKE values were decreased significantly. The most effective plate height on the flow control was seen as 𝐻=10 mm.
NaturalLanguageKeyword :
Vertical splitter plate , Vortex , Passive control , PIV , Shallow water
