张细兵, 殷瑞兰. 平面二维水流泥沙数值模拟[J]. 水科学进展, 2002, 13(6): 665-669.
引用本文: 张细兵, 殷瑞兰. 平面二维水流泥沙数值模拟[J]. 水科学进展, 2002, 13(6): 665-669.
ZHANG Xi-bing, YIN Rui-lan. Planar 2-D flow and sediment mathematical modeling[J]. Advances in Water Science, 2002, 13(6): 665-669.
Citation: ZHANG Xi-bing, YIN Rui-lan. Planar 2-D flow and sediment mathematical modeling[J]. Advances in Water Science, 2002, 13(6): 665-669.

平面二维水流泥沙数值模拟

Planar 2-D flow and sediment mathematical modeling

  • 摘要: 基于三角形网格划分,采用有限元方法,建立了河道平面二维水流泥沙数学模型。采用质量集中的简化处理和预估校正的时间推进算法,较好地解决了有限元计算存储量和计算速度问题。以空腔流和突扩段两种情况为例对模型进行了检验计算,结果表明,模型能较好地模拟河道水流泥沙运动及河床变形情况,且计算稳定性好、速度快、精度较高。

     

    Abstract: Based on triangular grids,the planar 2-D flow and sediment mathematical model is established by the finite element method Since the mass concentration and the pre-estimated and verified iteration are used to solve the equations,the questions of memory units and calculation velocity are settled quite well Simulation calculation is carried out on the cavity recirculation and single-sudden-expansion channel The results show that flow field and sediment distribution are simulated successfuly in the model and the calculations are stable,fast and accurate

     

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