Hydrodynamic Forces on Seabed Pipelines
Publication: Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 115, Issue 2
Abstract
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.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
Beckmann, H., and McBride, C. M. (1968). “Inherent scatter of wave forces on submerged structures.” Report 68‐PET‐7, American Society of Mechanical Engineers, New York, N.Y.
2.
Bryndum, M. B., Jacobsen, V. and Brand, L. P. (1983). “Hydrodynamic forces from wave and current loads on marine pipelines.” Proc. 15th Offshore Tech. Conf., 1, 95–102.
3.
Bryndum, M. B., Jacobsen, V., and Brand, L. P. (1986). “Hydrodynamic forces due to oblique wave and current action on marine pipeline.” Proc. 5th Offshore Mech. and Arctic Engrg. Conf., American Society of Mechanical Engineers, 3, 402–407.
4.
Fyfe, A. J., and Reed, K. (1986). “Forces on a rough, suspended pipeline under storm conditions.” Proc. 5th Offshore Mech. and Arctic Engrg. Conf., American Society of Mechanical Engineers, 3, 620–630.
5.
Fyfe, A. J., Myrhaug, D., and Reed, K. (1987). “Hydrodynamic forces on seabed pipelines: Large scale laboratory experiments.” Proc. 19th Offshore Tech. Conf., 1, 125–134.
6.
Grace, R. A., and Nicinski, S. A. (1976). “Wave force coefficients from pipeline research in the ocean.” Proc. 8th Offshore Tech. Conf., 3, 681–694.
7.
Grace, R. A., and Zee, G. T. Y. (1981). “Wave forces on rigid pipes using ocean test data.” J. Wtrway., Port, Coast., and Oc. Div., ASCE, 197(2), 71–92.
8.
Heidman, J. C., Olsen, D. A., and Johansson, P. E. (1979). “Local wave force coefficients.” Proc. Civ. Engrg. in the Oceans IV, ASCE, 2, 684–699.
9.
Holthe, K., Chao, J. C., and Sotberg, T. (1987). “PIPESTAB part project: An efficient computer model for predicting submarine pipeline response to waves and current.” Proc. 19th Offshore Tech. Conf., 3, 159–170.
10.
Jacobsen, V., Bryndum, M. B., and Fredosøe, J. (1984). “Determination of flow kinematics close to marinie pipelines and their use in stability calculations.” Proc. 16th Offshoreo Tech. Conf., 3, 481–492.
11.
Lambrakos, K. F. (1982). “Seabed wave boundary layer measurements and analysis.” Journal of Geophysical Research, 87(6), 4171–4189.
12.
Lambrakos, K. F., Myrhaug, D., and Slaattelid, O. H. (1988). “Seabed current boundary layers in wave‐plus‐current flow conditions.” J. Wtrway., Port, Coast., and Oc. Div., ASCE, 114(2), 161–174.
13.
Lambrakos, K. F., et al. (1987). “Wake model of hydrodynamic forces on pipelines.” Ocean Engineering, 14(2), 117–136.
14.
Littlejohns, P. S. G., and Spencer, J. (1982). “Wave forces on pipelines.” Report No. EX 1056 and No. EX 1059, Hydr. Res. Station, Wallingford, England.
15.
Rules for the design, construction and inspection of submarine pipelines and pipeline risers. (1976). Det norske Veritas, Oslo, Norway.
16.
Rules for submarine pipeline systems. (1981). Det norske Veritas, Oslo, Norway.
17.
Sarpkaya, T., and Rajabi, F. (1980). “Hydrodynamic drag on bottom‐mounted smooth and rough cyclinders in periodic flow.” Proc. 12th Offshore Tech. Conf., 2, 219–226.
18.
Wolfram, W. R., Getz, J. R., and Verley, R. L. P. (1987). “PIPESTAB Project: Improved design basis for submarinie pipeline stability.” Proc. 19th Offshore Tech. Conf., 3, 153–158.
Information & Authors
Information
Published In
Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 115 • Issue 2 • March 1989
Pages: 190 - 204
Copyright
Copyright © 1989 ASCE.
History
Published online: Mar 1, 1989
Published in print: Mar 1989
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.