本文旨發展二維數值黏性造波水槽，用以模擬平板移動過程與水體的相對關係。為模擬真實流體的運動情形，本模式擬求解非穩態Reynolds Averaged Navier-Stokes (RANS) 方程與紊流模式(k-e model)，並採用質點等位函數法追蹤波浪碎波時複雜自由液面的變化情形。本文經數值實驗測試(Zalesak’s problem、Moving wall problem)，得到不錯的結果，證明本數值模式的準確性。在確認模式的準確性後，為了解碎波流場的運動特性，本文藉由平板移動問題，探討碎波區域自由液面變化、流場特性以及邊界層內水平與垂直速度運動特性與剪應力變化關係。本文數值結果顯示，當平板移動速度增加時，在碎波區域會因為受到碎波水體拍擊自由液面影響，產生一順時針方向渦流。從邊界層垂直流速剖面可發現，波浪發生碎波時，邊界層內的流體會有向上運動的趨勢，而平板移動的過程中，對底床邊界層流場所造成的影響範圍，隨著平板加速度的增加而減少。

In this study numerical model was developed to solve the unsteady two-dimensional Reynolds Averaged Navier-Stokes (RANS) equation and the turbulent k-e equations for simulating the evolution of breaking water surface generated by a moving plate. A hybrid particle level set method was adopted to capture the complex free surface evolution, beginning from the steepening of the wave profile to the wave breaking. Accuracy of the numerical model was confirmed by solving the Zalesak problem and moving wall problem. After having verified the accuracy of the present numerical scheme, evolution of the overturning waves generated by a moving plate and the associated flow fields and velocity profiles within the bottom boundary layer have been revealed to details. Our numerical simulation shows that as the speed of the plate increases, due to the reattachment of the splash-up, a clockwise vortex is formed in the flow. Furthermore, when wave breaking occurs, the fluid particles within the bottom boundary layer show a tendency to move upward.

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