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On the prediction of parametric roll

AuthorsGunsing, M., Dallinga, R.
Conference/Journal11th International Ship Stability Workshop, Wageningen, The Netherlands
Date25 jun. 2010
The numerical assessment of parametric rolling by means of time domain simulations is troublesome. This is due to a number of practical and conceptual problems. Therefore, simple transparent methods that give immediate insight in the characteristics of a particular design are still of interest. The present paper describes a method in which the results of linear calculations on the ship motions are used to estimate hydrostatic stability variations. Following Dunwoody (1989a) the stability variations are translated in a reduction of the roll damping and the safe operational limits of the ship. Numerical results are compared with experimental data.


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stability, seakeeping and ocean engineeringwaves, impacts and hydrostructuralcfd developmentcfd/simulation/desk studiesmeasurements and controldata sciencetime-domain simulationsseakeepingpassengers and yachtingtransport and shippingmodel testingextreme conditionsloads and responsessimulationscruise and ferry