A 2-d numerical model of wave motion in lock approach channel is described, which is soluted by using the method of resultants of 2-d numerical model of unsteady flow and 1-d numerical model.
提出船闸引航道内水面波动的二维数学模型，采用二维非恒定流数学模型和船闸灌泄水一维数学模型联解。
Two sets of analytical solutions of 1-d unsteady isentropic perfect gas flow with area change are given.
本文给出了两组一元变截面不定常可压缩完全气体等熵流的解析解。
An unsteady 1-d flow and sediment model is used as a tool to study the scale effect caused by time distortion in physical models of sediment transport.
利用一维不恒定水流泥沙数学模型，研究泥沙实体模型试验的时间变态问题。
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