Pipelines in the arctic offshore must be installed and buried below the seabed to avoid direct contact, and to mitigate the effects of strains induced by soil displacement below the ice keel scour depth. A three-dimensional (3D) finite element (FE) model that utilizes the Coupled Eulerian Lagrangian (CEL) formulation has been developed to provide direct and explicit estimation of pipe stresses and strains. The CEL formulation is novel, and no published work has attempted to explore its capabilities and potential for ice scour modeling to date. The developed model will be helpful in solving some of the uncertainty regarding pipeline burial depth, potentially resulting in major trenching cost savings. In order to gain confidence in this numerical modeling technique, a systematic validation effort was carried out, whereby numerical predictions of subgouge displacements were compared with measured data from centrifuge tests and other published empirical and numerical data. Sensitivity analyses were then performed to investigate the effect of the scouring keel geometry, depth, and attack angle on the induced subgouge soil displacements. Preliminary conclusions were drawn and presented in this paper.
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ASME 2009 28th International Conference on Ocean, Offshore and Arctic Engineering
May 31–June 5, 2009
Honolulu, Hawaii, USA
Conference Sponsors:
- Ocean, Offshore and Arctic Engineering Division
ISBN:
978-0-7918-4345-1
PROCEEDINGS PAPER
Development and Validation of a Coupled Eulerian Lagrangian Finite Element Ice Scour Model
Billy Duron
Billy Duron
J P Kenny, Inc., Houston, TX
Search for other works by this author on:
Basel Abdalla
J P Kenny, Inc., Houston, TX
Kenton Pike
J P Kenny, Inc., Houston, TX
Ayman Eltaher
J P Kenny, Inc., Houston, TX
Paul Jukes
J P Kenny, Inc., Houston, TX
Billy Duron
J P Kenny, Inc., Houston, TX
Paper No:
OMAE2009-79553, pp. 87-95; 9 pages
Published Online:
February 16, 2010
Citation
Abdalla, B, Pike, K, Eltaher, A, Jukes, P, & Duron, B. "Development and Validation of a Coupled Eulerian Lagrangian Finite Element Ice Scour Model." Proceedings of the ASME 2009 28th International Conference on Ocean, Offshore and Arctic Engineering. Volume 5: Polar and Arctic Sciences and Technology; CFD and VIV. Honolulu, Hawaii, USA. May 31–June 5, 2009. pp. 87-95. ASME. https://doi.org/10.1115/OMAE2009-79553
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