Transitional air flow patterns at the mid-plane of gap between co-rotating disks in a stationary cylindrical enclosure are visualized under the acceleration condition of disks. The flow visualization is performed using olive oil particles with a laser sheet and CCD camera. On disk spinning-up, the transition flow patterns are clearly observed. The affect of magnitude of acceleration on the onset of transition and the relations of the number of vortex cells in fully turbulent regime of the flow in an outer region of the flow field to the rotating speed are also investigated. The centrifugal effect of particle is evaluated from the comparison with visualization results using hollow glass spheres.
This is a preview of subscription content, log in to check access.
Buy single article
Instant access to the full article PDF.
Price includes VAT for USA
Subscribe to journal
Immediate online access to all issues from 2019. Subscription will auto renew annually.
This is the net price. Taxes to be calculated in checkout.
Abrahamson, Scott D., Eaton, John K. and Koga, Dennis J., The flow between shrouded co-rotating disks, Phys. Fluid A, 1–2 (1989), 241–251.
Calluaud, D., David, L. and Texier, A., Vortex shedding process investigation downstream a surface-mounted block, Journal of Visualization, 8–2 (2005), 99–108.
Cui, J. L., Zhang, H. Q., Wang, B., Rong, Y. and Wang, X. L., Flow Visualization and Laser Measurement on Particle Modulation to Gas-Phase Turbulence, Journal of Visualization, 9-3 (2006), 339–345.
Denissenko, Petr Valerievich, Asymmetric Flows Driven by a Rotating Solid in a Fluid Layer, (2003), A dissertation, University of Hull.
Herrero, J., Giralt, F. and Humphrey, J. A. C., Influence of the geometry on the structure of the flow between a pair of corotating disks, Physics of Fluids, 11-1 (1999), 88–96.
Kubo, T., Nishijima, N., Shimizu, H., Hirono, Y., Tokuyama and Nakamura, S., Investigation of Flow Velocity in Actual Hard Disk Drives by Particle-image-velocimetry and Fluid Simulation, JSME-IIP/ASME-ISPS Joint Conference on Micro-mechatronics, (2003), 205–206.
Lee, D. Y., Lee, J., Park, D., Kim, S. Y. and Hwang, J., Sampling and analysis of particles generated in contact start/stop-mode of a hard disk drive by using a particle sampler, Mycrosyst Technol., 12 (2006), 537–544.
Noma, M. and Mori, A., Study on the structures of fluid flows in the annular space formed by a submerged tilting pad journal bearing, Journal of Visualization, 9-4 (2006), 457–465.
Wang, F. H., Jiang, G. D. and Lam, K., Flow patterns of cross-flow around a varicose cylinder, Journal of Visualization, 8-1 (2005), 49–56.
Watanabe, Y., Hashizume, Y. and Fujisawa, N., Simultaneous flow visualization and PIV measurement of turbulent buoyant plume, Journal of Visualization, 8-4 (2005), 293–294.
Dae-Wee Kong: He received his B.S. degree in 1998 and M.S. degree in 2001 from Yonsei University, Seoul. He is a Ph.D. candidate in the school of Mechanical Engineering from the same university. He was a research worker at the CISD (Center for Information Storage Device, Seoul) from 2001 to 2005. He is also a student member of ASME. His current research interests are computational fluid dynamics, rotating flow instability, and measurement with PIV.
Won-Gu Joo: He received his B.S. and M.S. degrees in 1978 and 1981 respectively from Mechanical Engineering, Yonsei University. He obtained his Ph.D. at Department of Engineering of University of Cambridge in 1994. He is currently working at Yonsei University in Korea as an associate professor. His current research interests are rotating flows, fluid-structure interaction, and turbomachinery aerodynamics.
Deug-Hee:Doh: He received B.A. and M.S degrees at Korea Maritime University (KMU) in 1985 and 1988. He obtained his PhD. degree at the Department of Mechanical Engineering of the University of Tokyo, Japan in 1995. His graduate work is on the development of 3D-PTV and simultaneous measurement techniques on temperature and velocity fields for thermal flows. He worked as an invited researcher for the Advanced Fluid Engineering Research Center (AFERC) in 1995. He has been working for Korea Maritime University since 1995 at the Division of Mechanical and Information Engineering. His research interests are to develop spatial measurement techniques such as 3D-PIVs, 3D-PTVs, micro-4D-PIV/4D-PTV for nano-/bio- flows.
About this article
Cite this article
Kong, D.-., Joo, W.-. & Doh, D.-. Visualizations of the transitional flow patterns at the mid-span between shrouded co-rotating disks. J Vis 10, 381–388 (2007). https://doi.org/10.1007/BF03181896
- Co-rotating disks
- Flow transition