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A multiple flux boundary element method applied to the description of surface water waves

Theory under-pinning a new Boundary Element Method, allowing highly nonlinear waves (including over-turning waves) to be accurately modelled, is outlined. Its success led to an EPSRC grant (EP/F022964) to develop a coupled BEM/SPH model; the latter describing post-breaking behaviour. In an industrial context, it has allowed improved estimates of wave-in-deck loads, sub-structure loads, and their relative phasing. These calculations were key to the re-appraisal of several structures, including North-Rankin-A (Australia) and the Trya (Denmark) and Ekofisk (UK) fields (jesper.tychsen@maerskoil.com; oistein.hagen@dnv.com). It has also been applied in a marine renewable energy context; the EPSRC/SUPERGEN project (P37999) addressing survivability in extreme seas.