OCEAN WAVE SIMULATION FOR ENGINEERING DESIGN

Abstract
Techniques for simulating ocean waves are most applicable when the response of the structure is complicated and perhaps involves other random environmental factors that may be introduced by concurrent simulations. The accuracy of the wave simulation is greatest for low amplitude waves and decreases for large steep waves. The degree of loss in accuracy for the higher and steeper waves deserves further research. Simulation techniques have the disadvantage of being time consuming and usually requiring the use of computers. Analytic solutions are to be preferred if feasible. Sometimes part of a problem can be solved analytically and then the intractable parts processed by simulation. A detailed search for shortcuts and approximations before proceeding with the actual simulation will often result in sizeable savings of computer time. The engineer will usually be forced to simulate with one- dimensional spectral densities because there are so few reliably measured two- dimensional spectral densities. The formulas for 2-D spectra were included in the hope that satisfactory directional data will soon be available. The linearization of the drag force, or its approximation by polynomials, is particularly useful in many problems.

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