This paper and the companion paper (Rateiro et al., 2011) present an illustrative case of the joint application of experimental tests and numerical simulations for the proper analysis of a complex offshore operation (launching of a sub-sea equipment using one or two vessels). The main idea of the whole study is to compare two methodologies and operational procedures for the installation of the equipment in the seabed, using either one vessel (conventional operation) or two vessels in a synchronized operation in a Y-configuration. The experiment was conducted under a simplified configuration, and uses ODF (one degree of freedom) servo-actuator to emulate the vessels induced motion. The hydrodynamic properties of the equipment was then calculated, and some preliminary conclusions about system dynamics could also be drawn. After that, numerical simulations were conducted, considering the coupled dynamics of the vessels, cables and equipments under irregular sea state. Those simulations were used for determining the limiting environmental condition for a safe operation, and are described in the companion paper. This paper describes the reduced scale experimental setup used for evaluating the hydrodynamic properties of the equipment during a subsea installation under waves excitation. The reduced scale model of the equipment was attached to one or two servo-actuator, that emulate the wave-induced motion. The tests were conducted at the physical wave basin of Numerical Offshore Tank (Tanque de Provas Nume´rico – TPN). The experiments enabled the preliminary evaluation of the dynamic behavior of the equipment when submerged by one or two launching cables. In the later case (two launching cables), several tests considering phase shifts between the servo-actuator have been conducted. The reduction in the dynamic amplification of cable traction could also be experimentally verified.
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ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering
June 19–24, 2011
Rotterdam, The Netherlands
Conference Sponsors:
- Ocean, Offshore and Arctic Engineering Division
ISBN:
978-0-7918-4438-0
PROCEEDINGS PAPER
Experimental Set-Up for Analysis of Subsea Equipment Installation
Pedro C. de Mello,
Pedro C. de Mello
University of Sa˜o Paulo, Sa˜o Paulo, SP, Brazil
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Felipe Rateiro,
Felipe Rateiro
University of Sa˜o Paulo, Sa˜o Paulo, SP, Brazil
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Andre´ L. C. Fujarra,
Andre´ L. C. Fujarra
University of Sa˜o Paulo, Sa˜o Paulo, SP, Brazil
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Anderson T. Oshiro,
Anderson T. Oshiro
University of Sa˜o Paulo, Sa˜o Paulo, SP, Brazil
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Cassiano R. Neves,
Cassiano R. Neves
Subsin, Rio de Janeiro, RJ, Brazil
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Melquisedec F. dos Santos,
Melquisedec F. dos Santos
Subsin, Rio de Janeiro, RJ, Brazil
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Eduardo A. Tannuri
Eduardo A. Tannuri
University of Sa˜o Paulo, Sa˜o Paulo, SP, Brazil
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Pedro C. de Mello
University of Sa˜o Paulo, Sa˜o Paulo, SP, Brazil
Felipe Rateiro
University of Sa˜o Paulo, Sa˜o Paulo, SP, Brazil
Andre´ L. C. Fujarra
University of Sa˜o Paulo, Sa˜o Paulo, SP, Brazil
Anderson T. Oshiro
University of Sa˜o Paulo, Sa˜o Paulo, SP, Brazil
Cassiano R. Neves
Subsin, Rio de Janeiro, RJ, Brazil
Melquisedec F. dos Santos
Subsin, Rio de Janeiro, RJ, Brazil
Eduardo A. Tannuri
University of Sa˜o Paulo, Sa˜o Paulo, SP, Brazil
Paper No:
OMAE2011-49946, pp. 763-772; 10 pages
Published Online:
October 31, 2011
Citation
de Mello, PC, Rateiro, F, Fujarra, ALC, Oshiro, AT, Neves, CR, dos Santos, MF, & Tannuri, EA. "Experimental Set-Up for Analysis of Subsea Equipment Installation." Proceedings of the ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering. Volume 6: Ocean Engineering. Rotterdam, The Netherlands. June 19–24, 2011. pp. 763-772. ASME. https://doi.org/10.1115/OMAE2011-49946
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