| 用有限元法求解河流平面二维冲淤问题 |
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| 引用本文： | 陈国祥,郁伟族.用有限元法求解河流平面二维冲淤问题[J].河海大学学报(自然科学版),1990,18(6):92-99. |
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| 作者姓名： | 陈国祥 郁伟族 |
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| 作者单位： | 河海大学水资源水文系，水利水电科学研究所，黄河水利委员会水利科学研究所 |
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| 摘 要： | 本文建立了一种用有限元法模拟自然河流平面变形的数学模型.模型考虑了二维水流挟沙力,并提出了一种处理固壁不可入边界条件的方法.用长江中游界牌河段的实测资料进行了验证计算,结果表明,水位、流速分布、含沙量分布及河床冲淤变化的符合程度均令人满意.
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| 关 键 词： | 有限元 河流 水流 挟沙力 悬移质 |
A Solution to Two-Dimensional River Bed Deformation Using Finite Element Method |
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| Chen Guoxiang.A Solution to Two-Dimensional River Bed Deformation Using Finite Element Method[J].Journal of Hohai University (Natural Sciences ),1990,18(6):92-99. |
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| Authors: | Chen Guoxiang |
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| Abstract: | A two-dimensional mathematical model for suspended sediment transport in fluvial rivers is established in this paper.Some aspects,such as the sediment carrying capacity and the treatment of slip condition,are considered.A numerical method using finite Element method for modelling the ir- regular river bank is developed,It converges through a few times of iteration,an example is given. The computational results agree well with the field data. |
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| Keywords: | river deformation mathematical model finite element method diffusion equation of suspended load sediment carrying capacity |
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