本文旨在探討規則波與浮式結構物的互制問題，並藉由實驗和模擬的方式來觀察浮體在波浪的作用下發生的六個自由度（6DoF）的受力運動行為。此次實驗於成功大學台南水工試驗所的風波流平面水槽（27m×19m×1m）中進行。結構物模型均為壓克力製的中空立方體和中空圓柱體。在平面水槽中進行的實驗，克服了通常只能斷面水槽觀察浮體二維運動的實驗侷限性，並且在初始以不同入射角的波浪條件進行，分別為0°、15°、30°和45°，設計的波浪週期為0.8s至2.5s。
另外，數值方式則是使用一種以光滑粒子流體動力學（SPH）方法的開源碼數值軟體（名為DualSPHysics）進行模擬。DualSPHysics開源碼碼能夠在C ++中編譯並且利用GPU運行，其藉由GPU的加速運算能力有利於模擬需要大量粒子操作的三維波浪與浮式結構的互制問題 。動態邊界粒子（DBP）為DualSPHysics_v4.0唯一預設的處理流體與固體邊界的方法，其特點為編碼與計算過程簡單快速且適用於各種形狀的邊界；而本文亦使用(Ren et al.,2015)的數值與實驗結果做浮式結構物與波浪互製作用的運動比較，以確保該模式在二維計算能夠提供準確並且穩定的結果。
最後，將此模式的三維數值結果與本文的實驗數據進行比較，以確保此模式即使是在更複雜，更貼近實際問題的三維情況下針對波浪與浮式結構物的互制問題進行模擬時，亦能為夠提供相當可靠的數據。

This thesis presents a study on the wave hydrodynamic interaction with floating structures under regular waves. With the use of combined IMU and LED motion tracking technique, a comprehensive behavior of floating structure focusing on the six-degree of freedom(6DoF) motions and forces exerted by regular waves is successfully investigated in the experiment. The experiment was conducted in a wave basin (27m x 19m x 1m) at National Cheng Kung University, Tainan Hydraulics Laboratory(THL). The models are a box and a cylinder, both in the scale of 1:50. Getting rid of the limitation of the experiment conducted in wave flume which normally can only investigate two-dimensional motion, the tests were carried out under the wave conditions of different incident angle, which are 0⁰, 15⁰, 30⁰ and 45⁰ in the basin, with different wave frequency in the range of 0.8s to 2.5s.

Next, the numerical simulations using the Smoothed Particle Hydrodynamic (SPH) method were conducted with an open-source code software, named DualSPHysics to make a data comparison between numerical and experimental results. DualSPHysics code, which can be compiled in C++ and run in in GPU, is an accelerated SPH simulation tool and suitable for the case of wave interaction with floating structures, especially in three dimensions, which needs a large number of particles (resources and time). The dynamic boundary particles (DBP) is used for the fluid-solid boundary treatment in this model due to the feature of simple, time-saving calculating process in code and adapt to the arbitrary geometry of structure boundary. In this paper, the numerical and experimental results of (Ren et al.,2015) are used to compare the motion of the floating structure with the wave interaction in order to ensure that the model can provide accurate and stable results in the two-dimensional calculation.

Lastly, the numerical results in three dimensions are compared with the experimental data in order to ensure that the present model can provide reliable data for more complex and realistic application on the related case.

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