現代貨櫃船為達高運載量需求，均在船艏與船艉水線上之容積持續加大，在一方面符合水線下低阻力之考量，另一方面達到水線上容積增加需求。此船型在高速行駛時，船舶與波浪間之相互運動將引發極大的衝擊作用，其衝擊力將可能導致船艏船艉變形。本研究之乃是使用數值模擬與模型試驗的方式探討楔型體衝擊水面的問題，針對楔形體與自由液面接觸後自由液面之變形、不同楔形角度其水下流場變化與楔型體的動量變化。
文中發現楔型體之加速度會隨著楔型角度的增加而減小，入水後水下流場呈現放射狀向外傳遞，加速度高峰值在楔型體入水後發生，並且在自由液面出現噴流後產生第二次大的峰值。當模擬落下高度越來越高時，其入水後最大壓力也將越來越高，但我們注意到過程中最大壓力值的部份，並不能確定每次其發生的正確位置。

Modern container ship is required with a higher load, such that the volume of bow and stern is increase below the waterline. It satisfies the low drag under the waterline and the volume increasing above the waterline. When this type of ship navigates at high speed, the influence of motion between ship and wave will generate huge impact on bow structure which may deform the hull. This research studied a wedge which impacts on the water by using numerical simulation and model test, aiming at the deformation of free-surface after contact, and the flow characteristic and dynamic variation for different dead rise angle of the wedge.
It is found that the acceleration will be decreasing with the increasing of dead rise angle; and the flow field appears a radiation pattern from the wedge; the peak of acceleration arises after the wedge into the water, and the second peak will appear after the spray on the surface. When the drop height is higher, the pressure on the wedge is higher also. But we can’t anticipate the highest pressure on certain position in one process.

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