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Experimental Study for the Mixing Effect of the Driven Bar on Rotating Flow in a Closed Cylinder
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 Title & Authors
Experimental Study for the Mixing Effect of the Driven Bar on Rotating Flow in a Closed Cylinder
Kim, Yu-Gon; Kim, Dong-Gyu;
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 Abstract
The experiment is conducted on the rapidly rotating incompressible flow within a confined cylinder using LDV(Laser Doppler Velocimetry). The configurations of interest are the flows between a rotating upper disk with a bar and a stationary lower disk enclosed within a cylinder. The flow is considered to be an axisymmetric undisturbed basic flow. The results show that the flow is strongly dependent on the radius and the shape of bar but is negligibly affected by the Reynolds number in turbulent flow. It is observed that in the lid-driven case the main forms near the wall as the Reynolds number increases. The thin bar causes the second axial flow due to the suction effect and the thick bar causes the main flow to be pulled toward the surface of the bar. The step bar shows the dual effect of the two. 1:2 tilt bar shows that the main flow distributes wider than the other cases in which interference occurs due step bar.
 Keywords
Laser Doppler Velocimetry;Reynolds Number;Reynolds Shear Stress;Lid-Driven;Rotating Flow;Turbulence Intensity;
 Language
Korean
 Cited by
1.
밀폐된 원통내부에서 회전체의 형상이 회전유동에 미치는 영향에 관한 실험적 연구,김유곤;박천수;

대한기계학회논문집B, 2002. vol.26. 5, pp.675-684 crossref(new window)
 References
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