Hydrodynamic Forces on Seabed Pipelines

A new hydrodynamic force model for the prediction of forces on seabed pipelines has been verified. Comparisons of forces predicted by the new model with those measured in full-scale laboratory and field investigations demonstrate the accuracy of the model, in terms of general force characteristics,...

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Bibliographic Details
Published in:Journal of waterway, port, coastal, and ocean engineering port, coastal, and ocean engineering, 1989-03, Vol.115 (2), p.190-204
Main Authors: Verley, Richard L. P, Lambrakos, Kostas F, Reed, Knut
Format: Article
Language:English
Subjects:
Applied sciences
Buildings. Public works
current forces
dynamic analysis
dynamic loads
Exact sciences and technology
Hydraulic constructions
hydrodynamics
Marine
mathematical models
Offshore structure (platforms, tanks, etc.)
offshore structures
simulation
SPECIAL SECTION: 1987 OTC PAPERS
underwater structures
wave forces
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Summary:A new hydrodynamic force model for the prediction of forces on seabed pipelines has been verified. Comparisons of forces predicted by the new model with those measured in full-scale laboratory and field investigations demonstrate the accuracy of the model, in terms of general force characteristics, peak force values, and spectral energy content, for both regular and irregular waves, with or without superimposed currents. Pipeline motions calculated from predicted forces are in good agreement with motions calculated from measured forces. Similar comparisons using the conventional Morison equation show its deficiencies and demonstrate the considerable improvements attained by the new model. Two effects included explicitly in the new force model, related to the wake behind the pipeline and the time dependence of the force coefficients, are supported by measurements.
ISSN:0733-950X
1943-5460
DOI:10.1061/(ASCE)0733-950X(1989)115:2(190)