Numerical Simulation of Multiple Floating Structures With Nonlinear Constraints

[+] Author and Article Information
Subrata K. Chakrabarti

Offshore Structure Analysis, Inc., 13613 Capista Dr., Plainfield, IL 60544e-mail: chakrab@aol.com

J. Offshore Mech. Arct. Eng 124(2), 104-109 (Apr 11, 2002) (6 pages) doi:10.1115/1.1463735 History: Received June 01, 2001; Revised November 01, 2001; Online April 11, 2002
Copyright © 2002 by ASME
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Definition sketch for a multibody moored system
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Comparison with frequency domain sway motion of supply vessel at the lee of an ISSC TLP
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Free oscillation of the SLIM tower model
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Oscillation of the SLIM tower in regular 1.75 sec wave
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Comparison of experimental data of SLIM with the time and frequency domain solution (L—low wave height; M—medium wave height; H—high wave height)
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Experimental motion of the top of free SLIM tower in 1.75 sec wave
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Numerical solution of free SLIM tower motion in 1.75 sec regular wave and cross current of 0.05 ft/s (omega—angle in wave direction; epsilon—angle in transverse direction)
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Experimental (left) versus numerical (right) results of free SLIM tower motion in 2.75 sec regular wave of high height (view from top; wave direction from bottom to top)
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Response time history of a single-point mooring system in random head waves (top plot—wave profile; 2nd plot—tower inclination; 3rd plot—tanker surge; bottom plot—mooring line load)




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