【摘要】 建立了平面二维非均匀沙有限元数学模型 ,着重考虑对非均匀沙分组挟沙力及床面颗粒级配调整的处理 ,并通过一个具有代表性的算例 ,说明该模型能够合理地模拟出平面二维水流流场、河床的冲淤和泥沙级配的变化 ,从定性上检验了该模型的正确性。更多还原

【Abstract】 A 2D finite element mathematical model for non-uniform sediment is formulated in this model, the group carrying capacity of non-uniform sediment and the adjustment of bed grain gradation are considered as focal points. A representative example is given to show that this model could simulate the 2D flow field, the fluvial process and the Variation of grain gradation well enough.更多还原