To investigate the effectiveness of a universal wake number for groups of closely spaced bluff bodes, staggered cylinder configurations with center-to-center pitch ratios of and 1.25, and incidence angles from α=0 deg–90 deg, were tested in the subcritical Reynolds number regime. The aerodynamic forces, base pressure, and vortex shedding frequencies were measured for the upstream and downstream cylinders, and were found to be strongly dependent on the incidence angle and small changes in the flow pattern. The Griffin number was found to be an appropriate universal wake number for the closely spaced staggered cylinders, based on the total drag force acting on the two cylinders, and the average base pressure for the two cylinders. The results suggest that the single vortex wake of a pair of closely spaced staggered cylinders is broadly comparable to the wake of a solitary bluff body, and that the universal wake number concept can be extended to groups of closely spaced bluff bodies.
Skip Nav Destination
Article navigation
March 2004
Technical Papers
Closely Spaced Circular Cylinders in Cross-Flow and a Universal Wake Number
David Sumner
David Sumner
Department of Mechanical Engineering, University of Saskatchewan, 57 Campus Drive, Saskatoon, Saskatchewan, S7N 5A9 Canada
Search for other works by this author on:
David Sumner
Department of Mechanical Engineering, University of Saskatchewan, 57 Campus Drive, Saskatoon, Saskatchewan, S7N 5A9 Canada
Contributed by the Fluids Engineering Division for publication in the JOURNAL OF FLUIDS ENGINEERING. Manuscript received by the Fluids Engineering Division February 12, 2003; revised manuscript received September 30, 2003. Associate Editor: M. V. O¨tu¨gen.
J. Fluids Eng. Mar 2004, 126(2): 245-249 (5 pages)
Published Online: May 3, 2004
Article history
Received:
February 12, 2003
Revised:
September 30, 2003
Online:
May 3, 2004
Citation
Sumner, D. (May 3, 2004). "Closely Spaced Circular Cylinders in Cross-Flow and a Universal Wake Number ." ASME. J. Fluids Eng. March 2004; 126(2): 245–249. https://doi.org/10.1115/1.1667881
Download citation file:
Get Email Alerts
Related Articles
Aerodynamic Characteristics of Asymmetric Bluff Bodies
J. Fluids Eng (January,2009)
Some Aspects of the Aerodynamics of Gurney Flaps on a Double-Element Wing
J. Fluids Eng (March,2001)
Control of Vortex Shedding Using a Screen Attached on the Separation Point of a Circular Cylinder and Its Effect on Drag
J. Fluids Eng (July,2017)
Review Paper on Wind Turbine Aerodynamics
J. Fluids Eng (November,2011)
Related Chapters
Vortex-Induced Vibration
Flow Induced Vibration of Power and Process Plant Components: A Practical Workbook
Random Turbulence Excitation in Single-Phase Flow
Flow-Induced Vibration Handbook for Nuclear and Process Equipment
Numerical Study of Cavitating Structure Near Wake of a Circular Cylinder
Proceedings of the 10th International Symposium on Cavitation (CAV2018)