A 2D 为水动力学,沉积运输和河的平均深度的模型词法调整被介绍。沉积运输 submodel 考虑不一致的沉积,床表面 armoring,水流带来的碎石运输的方向上的第二等的流动的影响,和河床的横向的斜坡。河岸侵蚀 submodel 为在 degradational 或沉积的床进化期间更新河岸几何学合并一个简单模拟方法。模型被用于 180 灲祬椠据敲獡摥戠 ?? ‰楴敭 ? 湡 ? 桴 ? 敭楤湡搠慩敭整 ? 景戠摥氠慯? 湩牣慥敳 ?祢㈠木‰楴敭 s
A 2D depth-averaged model for hydrodynamic, sediment transport and river morphological adjustment is presented. The sediment transport submodel considers non-uniform sediment, bed surface armoring, impact of secondary flow on the direction of bed-load transport, and transverse slope of river bed. The bank erosion submodel incorporates a simple simulation method for updating bank geometry during either degradational or aggradational bed evolution. The model is applied to a 180~ bend with a constant radius under unsteady flow conditions, and to Friedkin's laboratory meander channels. The results are in acceptable agreement with measurements, confirming the two dimensional model's potential in predicting the formation of river meandering and improving understanding of patterning processes. Future researches are needed to clarify some simplifications and limitations of the model.