本文通过数值模拟及摄动分析，对平面形状为矩形（简称小包方案）及平面形状为曲边梯形（简称大包方案）的两种盲肠河段的水位波动进行了研究。

In this paper numerical simulation and theoretical analysis are used to study the wave in two different types of sidearm, one is a rectangular channel, another is a trapezoid channel.

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海浪是海面起伏形状的传播，是水质点离开平衡位置，作周期性振动，并向一定方向传播而形成的一种波动。

The waves of the sea is the shape of the spread, and is left at the water quality, balance position periodic vibration and spread to certain direction, in the form of a wave.

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