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), Journal Name: Proc., Annu. Offshore Technol. Conf.; (United States) Vol. 1; ISSN OSTCB
- Country of Publication:
- United States
- Language:
- English
Similar Records
Effects of different wave free surface approximations on the response of a TLP in deep water
Time domain simulation of nonlinear response of a coupled TLP system in random seas
Related Subjects
020300 -- Petroleum-- Drilling & Production
42 ENGINEERING
420206* -- Engineering-- Mining & Drilling Equipment & Facilities-- (1980-1989)
423000 -- Engineering-- Marine Engineering-- (1980-)
AIRY FUNCTIONS
CURRENTS
EQUATIONS
EXTRAPOLATION
FORECASTING
FUNCTIONS
MATHEMATICAL MODELS
MOORINGS
NUMERICAL SOLUTION
OFFSHORE PLATFORMS
OIL WELLS
SCALE MODELS
SEAS
STRUCTURAL MODELS
SURFACE WATERS
SURGES
TIME DEPENDENCE
WATER CURRENTS
WAVE FORCES
WELLS