Comparative study on airgap under floating platforms and run-up along platform columns

Present engineering practice for computing airgap (i.e. the clearance between waves and deck) on floating platforms relies on very simplified approaches. However, recently several new codes for computation of nonlinear wave diffraction have been developed. To obtain a state of the art of the capabilities of these methods, test cases related to airgap under a floating platform and run-up along platform columns have been defined. Several organizations have been invited to apply their numerical tools to compute airgap and run-up for the defined test cases. The results from the comparisons are summarized and compared to experimental results. The study has been part of the work of ISSC2000 Committee 1.2.

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