The vibrations of a circular cylinder in both uniform and shear flows are investigated experimentally. For the experimental investigation, a low speed water tunnel was designed and built to provide either uniform or shear flow in the test section, depending on the upstream flow management. In the test section, a circular tube of various materials can be flexibly mounted for vibration testing. Two accelerators were carefully installed inside the tube so that one accelerator is sensitive to the cylinder vibration in the streamwise direction only, and the other in the cross-stream direction. The vibration amplitudes of the cylinder in the streamwise and cross-stream directions were simultaneously measured by the two accelerators, and recorded by a two-channel data acquisition system. The orbits of the cylinder motion can be drawn from the data. Experiments were conduced at various mass ratios (the ratio of the cylinder mass per unit length to its buoyancy force) and shear parameters (the non-dimensional velocity gradient of the approaching fluid flow to the cylinder). By analyzing the orbits and amplitude diagrams, it is found that both the shear parameter and mass ratio have profound effects on the cylinder vibration. The orbits of the cylinder in uniform flow are symmetric while they are asymmetric in shear flow. Vibration amplitude as a function of reduced velocity illustrates that the cylinder in uniform or shear flow does not vibrate at low reduced velocities but vibrate significantly beginning at the reduced velocity around 5, initiated by vortex-induced instability. At high reduced velocity, the circular cylinder in shear flow still vibrates at significant amplitude, an evidence of fluid elastic vibration. It is also shown by the amplitude diagrams that low mass ratio promotes the cylinder’s vibration while large mass ratio reduces the vibration.
Skip Nav Destination
ASME 2010 10th Biennial Conference on Engineering Systems Design and Analysis
July 12–14, 2010
Istanbul, Turkey
Conference Sponsors:
- International
ISBN:
978-0-7918-4917-0
PROCEEDINGS PAPER
An Experimental Study on Flow Induced Vibration of a Circular Cylinder in Shear Flow Available to Purchase
Ming Huei Yu,
Ming Huei Yu
National Sun Yat-sen University, Kaohsiung, Taiwan
Search for other works by this author on:
Yi-hsin Wu
Yi-hsin Wu
National Sun Yat-sen University, Kaohsiung, Taiwan
Search for other works by this author on:
Ming Huei Yu
National Sun Yat-sen University, Kaohsiung, Taiwan
Yi-hsin Wu
National Sun Yat-sen University, Kaohsiung, Taiwan
Paper No:
ESDA2010-24408, pp. 401-408; 8 pages
Published Online:
December 28, 2010
Citation
Yu, MH, & Wu, Y. "An Experimental Study on Flow Induced Vibration of a Circular Cylinder in Shear Flow." Proceedings of the ASME 2010 10th Biennial Conference on Engineering Systems Design and Analysis. ASME 2010 10th Biennial Conference on Engineering Systems Design and Analysis, Volume 3. Istanbul, Turkey. July 12–14, 2010. pp. 401-408. ASME. https://doi.org/10.1115/ESDA2010-24408
Download citation file:
9
Views
Related Proceedings Papers
Related Articles
Heat Transfer Past a Rotationally Oscillating Circular Cylinder in Linear Shear Flow
J. Heat Transfer (July,2022)
A Review of Flow-Induced Vibration of Two Circular Cylinders in
Crossflow
J. Pressure Vessel Technol (November,1986)
Vortex-Excited Response of Large-Scale Cylinders in Sheared
Flow
J. Offshore Mech. Arct. Eng (August,1988)
Related Chapters
Vortex-Induced Vibration
Flow Induced Vibration of Power and Process Plant Components: A Practical Workbook
Hydrodynamic Mass, Natural Frequencies and Mode Shapes
Flow-Induced Vibration Handbook for Nuclear and Process Equipment
Fluidelastic Instability of Tube Bundles in Single-Phase Flow
Flow-Induced Vibration Handbook for Nuclear and Process Equipment