Experimental Study of Production Risers in Steady Uniform Flow
Publication: Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 116, Issue 5
Abstract
Results from an experimental investigation on sectional models of multitube risers are presented. A single cylinder was tested as a reference case. The data outlined herein contain new information about the hydrodynamic behavior of various riser bundles exposed to a steady current. The bulk of the experimental data are pertinent to the measured steady drag coefficients, and the transverse and in‐line motions of such risers. Data are also provided about the influence of turbulence, surface roughness, and the separation distance between the center and satellite pipes on the loading and response characteristics of the specific riser geometries tested. It was found that when flexibility in the transverse and in‐line directions of the test cylinders is allowed, large increases in both the steady drag coefficients and response amplitudes may occur compared to fixed cylinders. These increases were seen with varying intensity in both the subcritical and critical flow regimes.
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References
1.
Bushnell, M. J. (1977). “Forces on cylinder arrays in oscillating flow.” Proc. Offshore Tech. Conf., 193–198.
2.
Currie, I. G., Hartlen, R. T., and Martin, W. W. (1972). “The response of circular cylinders to vortex‐shedding.” Proc., IUTAM‐IAHR Symp. on Flow‐Induced Structural Vibrations, Karlsruhe, Germany, 128–142.
3.
Demirbilek, Z., and Halvorsen, T. (1985). “Hydrodynamic forces on multitube production risers exposed to currents and waves.” Trans. ASME, 107(2), 226–234.
4.
Demirbilek, Z. (1988). “Forces on marine risers in a coexisting environment.” J. Wtwy., Port, Coast., and Oc. Engrg., ASCE, 114(3), 346–359.
5.
Justesen, P., et al. (1986). “The role of hydro‐elastic vibrations in marine risers.” Proc. 5th Int. OMAE Symp., Tokyo, Japan, Vol. 3, 417–425.
6.
Loken, A. E., et al. (1979). “Aspects of hydrodynamic loading in design of production risers.” Proc. Offshore Tech. Conf., 1591–1602.
7.
Novak, J. (1974). “Strouhal number of a square prism, angle iron and two circular cylinders arranged in tandem.” Acta Technica. CSAV, Czechoslovakia Academy of Sciences, 3, 361–373.
8.
Ottesen‐Hansen, N.‐E., Jacobsen, V., and Lundgren, H. (1979). “Hydrodynamic forces on composite risers and individual cylinders.” Proc. Offshore Tech. Conf., 1607–1622.
9.
Ottesen‐Hansen, N.‐E., and Justesen, P. (1987). “Shielding in pipe arrays in waves and current.” Proc. 6th Int. OMAE Symp., 1, Houston, Tex., Vol. 1, 127–134.
10.
Overvik, T. (1982). “Hydroelastic motion of multiple risers in a steady current,” thesis presented to the Port and Ocean Engineering Section, Norwegian Institute of Technology, at Trondheim, Norway, in partial fulfillment of the requirements for the degree of Doctor of Philosophy.
11.
Ramberg, S. E., and Griffin, O. M. (1974). “Vortex formation in the wake of a vibrating flexible cable.” J. Fluid Engrg., ASME, 96, 317–322.
12.
Yamamoto, T. (1976). “Hydrodynamic forces on multiple circular cylinders.” J. Hydr. Div., ASCE, 102(9), 1193–1210.
13.
Yttervoll, P. O., and Holden, K. (1985). “Flow induced tests on sectional models of multiple production risers.” Research Report No. 510004, The Norwegian Marine Technology Research Institute, Trondheim, Norway.
14.
Zdravkovich, M. M. (1977). “Review of flow interference between two circular cylinders in various arrangements.” J. Fluid Engrg., ASME, 99, 618–633.
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Published In
Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 116 • Issue 5 • September 1990
Pages: 575 - 591
Copyright
Copyright © 1990 ASCE.
History
Published online: Sep 1, 1990
Published in print: Sep 1990
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