TY - GEN
T1 - Numerical simulation of ship dynamics for application in a weather routing system
AU - Lin, Yu Hsien
AU - Fang, Ming Chung
PY - 2012
Y1 - 2012
N2 - In order to enhance the efficiency and safety of a ship sailing in rough seas, the authors aim to develop a ship dynamic performance system, which can be used to predict ship motion responses, wave loads as well as quasi-mean added resistance. Two-dimensional strip theory discretized by the source distribution method is implemented to calculate Response Amplitude Operators (RAOs) for 6 DOF motion as well as the wave loads for the vertical shear force and bending moment. In addition, the ITTC directional wave spectrum of the short-crested wave adopts the one-hundred years return sea state as the input for testing the sea-keeping performance. Subsequently, we developed a database for a specific ship to realize the relationship between the sea-keeping performance and a combination of wave headings and ship speeds. Since the calculation of hydrodynamic coefficients correspond to the instantaneous hull form below the free surface (draft), the Bspline curve fitting technique based on the fourth order Runge-Kutta method is introduced to describe the relative wave heights together with second order nonlinear forces.
AB - In order to enhance the efficiency and safety of a ship sailing in rough seas, the authors aim to develop a ship dynamic performance system, which can be used to predict ship motion responses, wave loads as well as quasi-mean added resistance. Two-dimensional strip theory discretized by the source distribution method is implemented to calculate Response Amplitude Operators (RAOs) for 6 DOF motion as well as the wave loads for the vertical shear force and bending moment. In addition, the ITTC directional wave spectrum of the short-crested wave adopts the one-hundred years return sea state as the input for testing the sea-keeping performance. Subsequently, we developed a database for a specific ship to realize the relationship between the sea-keeping performance and a combination of wave headings and ship speeds. Since the calculation of hydrodynamic coefficients correspond to the instantaneous hull form below the free surface (draft), the Bspline curve fitting technique based on the fourth order Runge-Kutta method is introduced to describe the relative wave heights together with second order nonlinear forces.
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U2 - 10.1115/OMAE2012-83515
DO - 10.1115/OMAE2012-83515
M3 - Conference contribution
AN - SCOPUS:84884497048
SN - 9780791844915
T3 - Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE
SP - 499
EP - 508
BT - Offshore Geotechnics; Ronald W. Yeung Honoring Symposium on Offshore and Ship Hydrodynamics
PB - American Society of Mechanical Engineers (ASME)
T2 - ASME 2012 31st International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2012
Y2 - 1 July 2012 through 6 July 2012
ER -