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      A Fully Nonlinear, Dynamically Consistent Numerical Model for Ship Maneuvering in a Seaway

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      Modelling and Simulation in Engineering

      Hindawi Limited

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          Abstract

          This is the continuation of our research on development of a fully nonlinear, dynamically consistent, numerical ship motion model (DiSSEL). In this paper we report our results on modeling ship maneuvering in arbitrary seaway that is one of the most challenging and important problems in seakeeping. In our modeling, we developed an adaptive algorithm to maintain dynamical balances numerically as the encounter frequencies (the wave frequencies as measured on the ship) varying with the ship maneuvering state. The key of this new algorithm is to evaluate the encounter frequency variation differently in the physical domain and in the frequency domain, thus effectively eliminating possible numerical dynamical imbalances. We have tested this algorithm with several well-documented maneuvering experiments, and our results agree very well with experimental data. In particular, the numerical time series of roll and pitch motions and the numerical ship tracks (i.e., surge, sway, and yaw) are nearly identical to those of experiments.

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          Modeling nonlinear roll damping with a self-consistent, strongly nonlinear ship motion model

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            Prediction of ship steering capabilities with a fully nonlinear ship motion model Part 1 Maneuvering in calm water

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              Author and article information

              Journal
              Modelling and Simulation in Engineering
              Modelling and Simulation in Engineering
              Hindawi Limited
              1687-5591
              1687-5605
              2011
              2011
              : 2011
              :
              : 1-10
              Article
              10.1155/2011/356741
              © 2011

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