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Nonlinear Drop Simulations of a Christmas Tree in Deep Waters

[+] Author Affiliations
Arya Majed

INTECSEA, Houston, TX

Phil Cooper

INTECSEA, Woking, UK

Paper No. OMAE2014-24284, pp. V01BT01A022; 6 pages
doi:10.1115/OMAE2014-24284
From:
  • ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering
  • Volume 1B: Offshore Technology
  • San Francisco, California, USA, June 8–13, 2014
  • Conference Sponsors: Ocean, Offshore and Arctic Engineering Division
  • ISBN: 978-0-7918-4538-7
  • Copyright © 2014 by ASME

abstract

This paper presents an investigation of the still water sink trajectories of an accidentally dropped Christmas Tree (XT). A 3D coupled nonlinear dynamics/hydrodynamics model of the XT is constructed and simulations executed from surface to seabed. XT initial water entry orientations are randomly varied in a Monte-Carlo simulation to predict the seabed impact zone. Still water simulation results are compared to simplified cone-angle type method predictions. The effect of XT flat panels on excursion mitigation is investigated. Finally, the influence of non-uniform current effects is studied.

Copyright © 2014 by ASME
Topics: Simulation , Water

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