... method amplification factor equation elastic plate element method wave motion ice sheet harbour boundary condition inner product frozen harbour interaction harbour wall thickness wave diffraction velocity potential theory Proceedings of the Thirty-second (2022) International Ocean...

... Abstract Wave diffraction is a fundamental problem in wave theory. At present, a lot of researches have been conducted on the diffraction of the relatively simple port arrangements such as a single jetty, a double jetties, and an island embankment. However, the planar arrangement of many...

... for fishing and tourism. Thus, the wave behavior inside and outside the lagoon is worthwhile to study. Generally speaking, due to the sheltering of island and reef flat, diffraction plays the most important role when waves enter the lagoon. Wave diffraction has been widely studied in recent decades(Abohadima...

... of height in a harbor with asymmetrical breakwaters. INTRODUCTION Water wave diffraction is the phenomenon where waves encounter an obstacle or gap and propagate into a sheltered area at a different angle than the original wave train. This action is of high concern to designers of ports and harbors who...

.... As a validation, we firstly study the diffracted waves by a circular cylinder. And then, the cases that circular cylinders with different flares are studied. To prove capacity of current scheme, nonlinear wave diffraction by ship geometry is also studied and by comparison with our experiment, pronounced agreement...

... and λ is the wave length), wave diffraction is important and should be considered. A superposition eigenfunction expansion method was used by MacCamy and Fuchs (1954) to obtain a linear solution, based on the assumption that the incident wave has a small steepness. For the case of waves acting upon...

... for nonlinear and irregular wave diffraction by MTF method. As such, an improvement on treating this radiation condition becomes essential. Upon examining a variety of approaches, it is found that the hybrid method with the damping zone is an effective approach to eliminate the problem. Fairly similar findings...

... on unidirectional waves cannot always give a conservative estimate. unidirectional wave wave load transverse force wave runup cylinder vertical cylinder wave force wave height interaction engineering fluid mechanics multidirectional random wave load cylinder array wave diffraction wave...

.... Hydrodynamic force and water surface elevation due to the wave trapping are presented against the nondimensional wavenumber which is known as scattering parameter in the problem of wave diffraction around cylinders. Wave run-up at each cylinder is investigated as well. Near-trapped modes, which are quasi...

..., a mixed Eulerian-Lagrangian (MEL) technique is used as the time marching process in a Lagrangian scheme. This approach possesses a number of practical advantages in terms of accuracy and computational efficiency. Numerical simulations are carried out for wave diffraction around a fixed vertical circular...

... ABSTRACT This paper describes the derivation and implementation of combined wave diffraction-refraction in a spectral directional wave model for coastal applications. The wave refraction is included in the total derivative of wave-action while diffraction is formulated as wave energy diffusion...

... Study on Wave Diffraction from a 3D Box in a Two-layer Fluid by Time-domain Approach Ying Gou1, Xinjia Chen1, Bin Teng1 and Yanna Zheng2 1. State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology Dalian, Liaoning, China 2. Department of Port Route and Coastal...

... Wave Diffraction and Radiation of a Submerged Hollow Sphere with an Opening Hole Mansheng Dong State Key Laboratory of Ocean Engineering, Shanghai Jiaotong University, Shanghai, China School of Transportation Engineering, Hefei University of Technology, Hefei, China Guoping Miao, Renchuan Zhu, Ju...

... ship resistance diffraction discrepancy drift force ship motion incident wave wave diffraction eut wavelength kashiwagi wigley model forward-speed effect computed result formula kochin function modifed wigley model fn 0 forward speed Effects of Forward Speed of a Ship...

... on the structure. Second order wave diffraction theory has been included in the numerical simulation to steep waves. Both the wave run-up time history on the cylinder and the wave response spectrum derived from the diffracted wave time series are investigated and compared with the experiments conducted in a wave...

... diffractions due to the small openings diminish as opening rate W/Lr increases, as we expected intuitively on the basis of the well known wave diffraction and refraction phenomena in a coastal region. MEAN FLUID FLOW Fig. 7 and 8 show mean velocity of fluid flows at the dimensionless locations (X/Li , Y/Li...

... of water waves is, in general, inherently nonlinear and unsteady has been found through a variety study by many researchers. Numerical modeling of nonlinear wave diffraction around large offshore structures are needs to obtain more accurate wave force and run-up predications than those of linear...

... equipment and lead to long periods of expensive production downtime. Wave-structure interaction is modelled using linear and second order diffraction theory. In this study, the 3D water wave diffraction problem is solved using a quadratic boundary element method. It is noted that a robust fully nonlinear...

... ABSTRACT The wave diffraction in a current around a large-scale vertical circular cylinder is studied numerically in this paper. The wave relative frequency in the coordinate system moving with current and the angle between the direction of wave propagation and that of current are computed...

... the Boussinesq equations. equation cylinder experimental data water depth wave diffraction velocity potential boundary condition wave surface elevation dispersion relation linear wave theory wave force boussinesq equation boundary circular cylinder finite element method A New Form...