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Experimental Investigation of Local Scour Around a Submerged Vertical Circular Cylinder in Steady Currents

[+] Author Affiliations
Ming Zhao, Liang Cheng, Zhipeng Zang

The University of Western Australia, Crawley, WA, Australia

Paper No. OMAE2009-79148, pp. 139-145; 7 pages
doi:10.1115/OMAE2009-79148
From:
  • ASME 2009 28th International Conference on Ocean, Offshore and Arctic Engineering
  • Volume 1: Offshore Technology
  • Honolulu, Hawaii, USA, May 31–June 5, 2009
  • Conference Sponsors: Ocean, Offshore and Arctic Engineering Division
  • ISBN: 978-0-7918-4341-3 | eISBN: 978-0-7918-3844-0
  • Copyright © 2009 by ASME

abstract

Local scour around a submerged vertical circular cylinder in steady currents was studied by laboratory experiments. The experiments were conducted under live-bed scour conditions. Only one median sediment size of d50 = 0.40 mm was used in the experiments with a uniformity parameter of d85/d15 = 1.42. In some of the tests, time-developments of scour depth at the stagnation point of the cylinder were measured using the conductivity scour probes. Three-dimensional (3D) seabed topography around each model cylinder was measured using a laser profiler developed at University of Western Australia. The experimental results showed that the scour depth increased with an increase in cylinder height. The development rate of scour depth increases if Shields parameter increases.

Copyright © 2009 by ASME

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