本文提出在有限長度之水槽中，以推移式造波板從靜止開始推移造波的瞬時線性解，且進行模型實驗以驗證本文理論解之物理適用性並探討實驗之分析結果。
本文理論解之水位和Madsen (1970)的解極為吻合；波高衝程比與相對水深的關係也和Dean and Dalrymple (1992)的結果吻合；實驗結果則都顯示較理論值偏小。理論與實驗結果的誤差會隨波浪Ursell數的增大而變大。而從本研究之理論解與實驗結果都發現當波浪達到穩定前會存在一個比穩定波高還大的波；也發現在Ursell數較小的波浪情況下，波浪達到穩定的時間會隨著距離的增加而增加。

An analytical solution in Cartesian coordinates for transient waves from rest generated by a periodically oscillating piston-type wavemaker in a flume of finite length is proposed in this paper. The mathematical validity of the proposed solution will be verified by comparing with the previous solutions in form of Fourier integral for both cases of periodic and step paddle motions. The physical validity it also verified by comparing with experimental results carried out in NCKU. Larger errors of water elevations between the analytic solution and experimental results occur when Ursell number is large than those when Ursell number is small. Both analytic solution and experimental results show that the amplitude of water elevation first increases with time then reaches a maximum before a steady amplitude for the periodically oscillating wavemaker. When Ursell number is small, the time which wave reaches steady waves increases along with the distance increase.

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