隔間水槽阻尼器(Partitioned Tank Damper, PTD)為一矩型容器，容器內部裝有液體，中央設有隔板，隔板之下有開口，液體可經由開口在兩隔間之間交互流動。若將PTD配置於結構之中，可有效減低外力（如地震. 強風等）引起的振動反應。本文著重於研究PTD受一外力作用振動之後，內部液體的流場變化，以及浮板運動與內部壓力的相互關係。
　　本文利用模型試驗配合數值模擬以分析PTD內部的流場狀況。試驗部分為將PTD固定於振動台上，以伺服馬達給予一RAMP位移，並同時以CCD(Charge Coupled Device, 電荷耦合元件) 攝影機來拍攝浮版整體運動歷程，並利用影像處理的技巧分析出浮板之上下移動高度及相對旋轉角度。數值計算部分，則依據上述試驗所得資料來模擬計算整體PTD內部的流函數分佈、渦度分佈、速度分佈與壓力分佈。
　　數值計算的部分，首先進行了模式的測試。由測試的結果可以發現，雖然有限解析法比有限差分法有較嚴謹的理論基礎，但相對的也需要較多的計算時間與疊代次數。此外，適度的控制格網大小以及收斂精度可避免浪費不必要的計算時間；而在穩定收斂的數值模式下，適度的選用超鬆弛因子可有效的加速計算收斂的速度。
　　數值模擬PTD內部流場的結果可以發現，渦度函數較大的位置均發生在靠近浮板下方以及直立邊壁的上方位置。整體來說，渦度函數的分佈並不會對流函數分佈造成太大的影響。

　Partitioned Tank Damper (PTD) is a rectangular reservoir equipped with a partition board in the middle and contains water, when the bottom of partition board opened, the fluid flow oscillates between two side of tanks. PTD equipped in a structural system will suppress the oscillation excited by earthquakes or wind efficiently. This thesis attempts to investigate the behaviors of a PTD by numerical analysis.
　This thesis utilizes PTD model test and numerical simulation to analyze the motion of fluid inside PTD. We set the PTD on the shaking table and use the servo motor to give it ramp displacement, and take pictures by Charge Coupled Device(CCD) camera, so we can utilize the image acquisition software to analyze the elevation and inclination of water surface. Furthermore, we can use the data to calculate the distribution of stream function, vortices, and pressure.
　In the numerical works, first we test the model. The result shows that Finite Analytic Method takes more time and more iterations than Finite Difference Method. Furthermore, choose the grid size and the bound of convergence properly will avoid the waste of time; choose the successive over-relaxation factor correctly will speedup the time of computer calculation.
　The numerical simulation of PTD shows strong vortices occur near water surface and vertical bound. Generally speaking, the distribution of vortices will not affect the distribution of stream function.

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