摘要
本文结合北江下游具体河段,针对河段弯曲及河道分汊的特性,考虑岸滩崩塌展宽进行边界处理,建立了二维平原型弯曲河道水沙数学模型,正确地计算模拟了河段中大江心洲和丁坝的绕流阻水现象,准确地处理了滩地漫水、鱼塘及挖沙坑蓄水及其对河道演化趋势的影响,为河道的科学治理提供了依据。在计算方法上,本文采用了二维有限元的方法,可进行网格自动剖分和局部加密计算模拟。
A 2D flowsediment mathematical model for meandering river is developed. In the model the flow resistances of river islands and spur dikes are precisely simulated, and the effects of floodplain, fishponds and excavated pits are taken into consideration. The 2D FEM is adopted and the technique of auto grid generation is applied.
出处
《水利学报》
EI
CSCD
北大核心
2003年第9期25-30,共6页
Journal of Hydraulic Engineering
