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.
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ASME 2008 27th International Conference on Offshore Mechanics and Arctic Engineering
June 15–20, 2008
Estoril, Portugal
Conference Sponsors:
- Ocean, Offshore and Arctic Engineering Division
ISBN:
978-0-7918-4820-3
PROCEEDINGS PAPER
Parallel Dynamic Optimization of Steel Risers Available to Purchase
Rafael Loureiro Tanaka,
Rafael Loureiro Tanaka
University of Sa˜o Paulo, Sa˜o Paulo, SP, Brazil
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Clo´vis de Arruda Martins
Clo´vis de Arruda Martins
University of Sa˜o Paulo, Sa˜o Paulo, SP, Brazil
Search for other works by this author on:
Rafael Loureiro Tanaka
University of Sa˜o Paulo, Sa˜o Paulo, SP, Brazil
Clo´vis de Arruda Martins
University of Sa˜o Paulo, Sa˜o Paulo, SP, Brazil
Paper No:
OMAE2008-57568, pp. 503-510; 8 pages
Published Online:
July 27, 2009
Citation
Tanaka, RL, & de Arruda Martins, C. "Parallel Dynamic Optimization of Steel Risers." Proceedings of the 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. pp. 503-510. ASME. https://doi.org/10.1115/OMAE2008-57568
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