SECOND ORDER WAVE INTERACTION WITH A LARGE STRUCTURE

Bjarne Buchmann, Jesper Skourup, David L. Kriebel

Abstract


Wave diffraction around a large vertical circular bottom mounted cylinder is considered. Results from a 3D second-order numerical time domain Boundary Element Model, a 3D second-order semi-analytical frequency domain model and experiments are compared and show good agreement over a wide range of wave frequencies and wave steepnesses. In general the agreement between the calculated and experimental results is satisfactory even in some cases where second-order Stokes' wave theory is not a priori expected to provide accurate results. The two numerical models have thus been validated against each other and validated against experiments. It is noted that the inclusion of second-order effects is important for the accurate estimation of run-up on a structure.

Keywords


large structure; second order wave

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