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- W830343610 abstract "A non-linear computational model has been developed to calculate the heave and pitch motions of planing ships in irregular head waves. The computational model is based on a model. This model has been extended significantly to be able to handle the behaviour of planing craft in irregular waves. For this purpose a wavemaking routine has been added which makes it possible to calculate the wave elevation along the length of the ship any time corresponding to a predetermined wave spectrum. In addition polynomial expressions for sinkage and trim of the craft at speed have been developed based on an extensive series of model experiments with a systematic series of planing hull forms. In a new computational routine the resulting sinkage and trim are being used to asses the pressure distribution over the length of the planing model at speed. This determines the relative magnitude of the hydrostatic and hydro dynamic part of the lift. The formulations used for the determination of the added mass and the wave exciting forces have been examined and extended to become dependent to the geometry of the craft in actual contact with the waves while performing large relative motions. A computer code has been developed to solve the non-linear equations in the time domain. The results have been extensively verified with experimental results derived from tests in a Towing Tank. Finally it is shown that a proper formulation of the limiting criteria with respect to workability of a craft is of great importance on the final outcome of an optimisation and this determines whether a linear or a non-linear calculation method may be used." @default.
- W830343610 created "2016-06-24" @default.
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- W830343610 date "1993-01-01" @default.
- W830343610 modified "2023-09-26" @default.
- W830343610 title "DYNAMIC BEHAVIOUR OF FAST MONOHULLS" @default.
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- W830343610 hasPublicationYear "1993" @default.
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