Advanced SearchSearch Tips
Experimental Study for the Mixing Effect of the Driven Bar on Rotating Flow in a Closed Cylinder
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 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;
  PDF(new window)
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.
Laser Doppler Velocimetry;Reynolds Number;Reynolds Shear Stress;Lid-Driven;Rotating Flow;Turbulence Intensity;
 Cited by
밀폐된 원통내부에서 회전체의 형상이 회전유동에 미치는 영향에 관한 실험적 연구,김유곤;박천수;

대한기계학회논문집B, 2002. vol.26. 5, pp.675-684 crossref(new window)
Schlichting, 1979, Boundary Layer Theory, McGRAW-HILL, pp. 559-568, 525-529

Jae Min Hyun, 1985, 'Transient Starting Flow in a Cylinder With Counter-Rotating Endwall Disks,' ASME, Vol. 107, pp. 92-96

Wild, P. M., 1996, 'Experimental and Computational Assessment of Windage Losses in Rotating Machinery,' ASME, Vol. 118, pp. 116-122

김유곤, 송효근, 1995, '이중실린더내 층류 회전유동에 미치는 온도장의 영향에 관한 수치해석,' 대한기계학회, '95년도 추계학술대회논문집 (Ⅱ), 95F195, pp. 110-114

김유곤, 최진우, 1997, '축대칭 난류 회전유동에 대한 수치해석,' 대한기계학회, '97년도 추계학술대회논문집 B, 97F276. pp. 570-575

Kim, Y. G., 1991, 'Development of Digital Vector Velocimetry Method and Its Application to Rotating Flows,' Ph.D. Dissertation, The University of Iowa, pp. 68-69

You-Gon Kim, 1995, 'Digital Vector Image Processing of Lid-Driven Rotating Cavity flow,' KSME, Vol. 9, No. 2, pp. 187-196