Full Content is available to subscribers

Subscribe/Learn More  >

Parallel Dynamic Optimization of Steel Risers

[+] Author Affiliations
Rafael Loureiro Tanaka, Clóvis de Arruda Martins

University of São Paulo, São Paulo, SP, Brazil

Paper No. OMAE2008-57568, pp. 503-510; 8 pages
  • ASME 2008 27th International Conference on Offshore Mechanics and Arctic Engineering
  • Volume 3: Pipeline and Riser Technology; Ocean Space Utilization
  • Estoril, Portugal, June 15–20, 2008
  • Conference Sponsors: Ocean, Offshore and Arctic Engineering Division
  • ISBN: 978-0-7918-4820-3 | eISBN: 0-7918-3821-8
  • Copyright © 2008 by ASME


The design of an ultradeepwater steel riser is known to be a challenging task, considering the several environmental load conditions to be simulated and the long time took by each simulation. To aid in this task, optimization algorithms can be used to automate the search for the best design. The problem, however, is very expensive computationally, motivating the implementation and use of a parallel optimization software coupled with a frequency domain dynamic model. This paper deals with the use of two algorithms to optimize a steel riser of given inner diameter and material for both pipe and floater: the genetic algorithm and the simulated annealing. The optimizer is left free to vary the length of the segments and the floater diameter, inside user-defined ranges. Each obtained configuration is tested in a set of load cases with different currents, offsets and waves. Optimization times and performance gain with parallelization is addressed for both algorithms.

Copyright © 2008 by ASME



Interactive Graphics


Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In