Time-domain model for TLP surge response in extreme sea states
A time-domain model is presented and evaluated for the prediction of the surge response of a tension leg platform (TLP) in regular and random waves, in the presence of a current. The wave force equation in the model is a modification of the Morison equation. Wave diffraction effects are incorporated in an approximate manner. The time-domain model is evaluated on the basis of experimental tests that were performed on a 1:60 scale model of a TLP. The tests were specially designed to investigate the effect of combined waves and current on surge response. The tests were conducted in regular, random and grouped waves. Current was simulated by towing the model. Two different forms of linear wave theory based on stretching and extrapolating wave particle kinematics from Airy wave theory up to the free surface are investigated. The maximum surge response is predicted well by the time-domain model provided the extrapolation of Airy wave theory is used.
- Research Organization:
- Chevron Oil Field Research Co.
- OSTI ID:
- 6195477
- Report Number(s):
- CONF-8405208-
- Journal Information:
- Proc., Annu. Offshore Technol. Conf.; (United States), Vol. 1; Conference: 16. annual offshore technology conference, Houston, TX, USA, 7 May 1984
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
02 PETROLEUM
OFFSHORE PLATFORMS
MATHEMATICAL MODELS
MOORINGS
WAVE FORCES
AIRY FUNCTIONS
EQUATIONS
EXTRAPOLATION
FORECASTING
OIL WELLS
SCALE MODELS
SEAS
SURGES
TIME DEPENDENCE
WATER CURRENTS
CURRENTS
FUNCTIONS
NUMERICAL SOLUTION
STRUCTURAL MODELS
SURFACE WATERS
WELLS
420206* - Engineering- Mining & Drilling Equipment & Facilities- (1980-1989)
423000 - Engineering- Marine Engineering- (1980-)
020300 - Petroleum- Drilling & Production