A conditional mean second-order wave theory
- Technical Univ. of Denmark, Lyngby (Denmark). Dept. of Ocean Engineering
- Univ. of California, Berkeley, CA (United States). Dept. of Naval Architecture and Offshore Engineering
In the design of bottom supported offshore structures for oil exploration and oil production the wave loading is often determined by subjecting the structure to a periodic wave with prescribed wave height and period. The advantage of this procedure is that a non-linear wave theory, for instance Stokes` fifth-order, can be applied to predict the instantaneous submerged parts of the structure and the wave kinematics up to the free water surface. In a stationary stochastic sea state the mean wave profile and associated wave kinematics conditioned on a given wave elevation at a specified point in space or time are derived. The results are based on the second-order, unidirectional, deep water Stoke`s wave theory, but can easily be extended to other moderate non-linear wave formulations. The application of the proposed wave theory as a design wave is discussed together with methods to overcome convergence problems associated with wideband wave spectra.
- OSTI ID:
- 182712
- Report Number(s):
- CONF-950695--; ISBN 0-7918-1306-1
- Country of Publication:
- United States
- Language:
- English
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