Application of the numerical circular wave tank on the simulations of oblique and multi-directional waves

To simulate the oblique and multi-direction waves, a numerical circular wave tank of implementing a finite volume method in three-dimensional cylindrical coordinates is developed based on the incompressible two-phase flow model in the present study. Both the oblique waves from an arbitrary direction and multi-directional waves reproduced by the integration of oblique waves are investigated using the circular wave tank. By comparing the numerical results with the theoretical ones, it is found that the proposed numerical wave tank can accurately reproduce oblique and multi-directional waves without the influence of the reflection waves. Numerical results of the wave diffraction around a vertical circular cylinder from different incident directions are also presented. The result shows that it is in good agreement with the theoretical and experimental results and it is interesting to note that the influence of the incident direction can be ignored on the performance of the circular wave tank.

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