Based on triangular grids and finite element method, a planar 2-d unsteady tidal flow mathematical model is established in the article.
本文基于三角形网格划分，采用有限元法，建立了平面二维非恒定潮流数学模型。
Based on model experiment, the local unsteady phenomenon in 2-d horizontal flow with steady divergent pressure was studied.
试验研究了恒定二元水平有压扩散流中的局部非稳态流动现象。
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。
A 1-D unsteady flow hydrodynamic numerical model is developed for the river network region of the Pearl River Delta, and the model is calibrated with the measured data.
建立了珠江三角州河网区一维非恒定流水动力学数学模型，并根据实测资料对模型进行了率定验证；
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。
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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