Effects of different wave free surface approximations on the response of a TLP in deep water
- Univ. of Texas, Austin, TX (United States)
This paper is based on work conducted at the Offshore Technology Research Center to investigate the relative importance of different types of nonlinearities on the dynamic response of tension leg platforms. A time domain solution using Morison`s equation with several modifications and allowing to include or neglect various sources of nonlinearities was implemented and used in the dynamic analysis. This paper focuses on the non-linear effect of evaluating the wave forces up to the free surface using different approximate methods. A TLP hull model with time varying tendon forces is subjected to regular and irregular waves with and without current. The effects on calculating the wave kinematics up to the mean water level or up to the actual free surface, making use of various extrapolation or stretching techniques are then discussed.
- OSTI ID:
- 403099
- Report Number(s):
- CONF-940409--; ISBN 1-880653-10-9
- Country of Publication:
- United States
- Language:
- English
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