Drag reduction of deepwater risers by the use of helical grooves

Shan Huang, David Clelland, Alexander Day, R. James

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

6 Citations (Scopus)

Abstract

Model tests were carried out in a towing tank to investigate the effects of helical grooves on the drag loading of stationary circular cylinders in uniform and steady currents. A series of models were made and tested, including smooth and rough cylinders with and without grooves. The maximum Reynolds number achieved in the tests was about 4x10(5). The comparative results between the smooth and grooved cylinders show that the helical grooves reduce the drag loading by between 18 and 25% depending upon the cylinder surface roughness and the Reynolds number. This is a continuation of our work published in OMAE06 in Hamburg on VIV suppression by the use of helical grooves.
Original languageEnglish
Title of host publicationProceedings of the 26th International Conference on Offshore Mechanics and Arctic Engineering
Place of PublicationNew York
Pages561-565
Number of pages5
Volume1
Publication statusPublished - 2007
Event26th International Conference on Offshore Mechanics and Arctic Engineering - San Diego, United States
Duration: 5 Jun 201010 Jun 2010

Conference

Conference26th International Conference on Offshore Mechanics and Arctic Engineering
CountryUnited States
CitySan Diego
Period5/06/1010/06/10

Keywords

  • drag reduction
  • deepwater risers
  • helical grooves
  • flow
  • micro-riblet film

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  • Cite this

    Huang, S., Clelland, D., Day, A., & James, R. (2007). Drag reduction of deepwater risers by the use of helical grooves. In Proceedings of the 26th International Conference on Offshore Mechanics and Arctic Engineering (Vol. 1, pp. 561-565). New York.