Abstract
The sensitivity analysis of wave direction is carried out for three cases, namely, the excavation of outer channel, surge and typhoon in the shield port. The results show that for the sheltered port with excavated outer channel, the wave direction sensitivity near the entrance is strong, and the one-way wave sensitivity is stronger than the multi-directional wave, so it is suggested that the main wave direction analysis should be densified to 32 azimuth angle; for the swell sea area, when its long-period characteristics lead to the wave near shore transmission process, the greater the wave direction change, the more concentrated the wave direction perpendicular to the shoreline, so the wave direction of the swell sea area is divided. For the influence of typhoon, the wave direction should consider the possibility of the change of the strong typhoon path, and for the strong wave direction, it is suggested to be Increased to the four or eight azimuth.
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