کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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794673 | 902515 | 2006 | 21 صفحه PDF | دانلود رایگان |

An unstructured-mesh-based finite element method is employed to simulate two-dimensional nonlinear interactions between waves and non-wall-sided floating structures. The velocity potential theory is adopted and the potential is obtained at each time step through solving a matrix equation based on the Galerkin method. The boundary conditions on the free surface are satisfied in the Lagrangian form and the information is updated through the fourth-order Runge–Kutta method. Remeshing based on B-splines is applied regularly to avoid over-distorted elements, and smoothing based on a method using the energy of a curve defined through its nodes is applied to improve the stability of the results. Comparison is made with published results for transient wave motion in a tank to validate the present method. Extensive simulation is made for wedge-shaped bodies in vertical and horizontal motions, and comparison is made with the solution from second-order theory. Results are also provided for wedges in a tank, for wedges in large motion relative to water depth and for twin wedges.
Journal: Journal of Fluids and Structures - Volume 22, Issue 4, May 2006, Pages 441–461