| 床面冲淤计算机处理方法 |
| |
| 引用本文： | 田林,孙志林.床面冲淤计算机处理方法[J].海洋工程,2001,19(4):100-104. |
| |
| 作者姓名： | 田林 孙志林 |
| |
| 作者单位： | 浙江大学 海洋科学与工程系,浙江,杭州,310028 |
| |
| 基金项目： | 国家自然科学基金项目 ( 5 0 0 790 2 5,5 97790 10 )，交通部九五重点科技项目 ( 95 -0 5 -0 2 -14 ) |
| |
| 摘 要： | 冲淤计算是河流，河口，海岸等水域中分析，预测床面变化的基础，利用非结构网络自动剖分技术形成覆盖计算区域的三角网，能较好地适应边界和特殊地形，基于高程内插建立三角网数字高程模型，采用垂直三棱柱体作为基本单位计算不同时段冲淤量，从而提高计算精度，通过网络剖分，利用在计算区域内任意选择子域进行淤量的计算和分析。同时将生成的非结构网格直接有于二维床面冲淤数学模型，便于对每个节点的计算结果进行检证以提高模型的可靠性。
|
| 关 键 词： | 非结构网络 床面冲淤 计算机处理 河流 河口 海岸 数字高程模型 |
| 文章编号： | 1005-9865(2001)04-0100-05 |
| 修稿时间： | 2000年9月4日 |
Computer processing of erosion and deposition on the bed surface |
| |
| TIAN Lin,SUN Zhi-lin.Computer processing of erosion and deposition on the bed surface[J].Ocean Engineering,2001,19(4):100-104. |
| |
| Authors: | TIAN Lin SUN Zhi-lin |
| |
| Abstract: | Computation of erosion and deposition on the bed surface is a foundation of predicting bed variations in rivers, estuaries and seas. Triangular meshes are automatically generated by a new non-structure grid generation technique, which can well adapt to complex boundaries and special topographies in the whole calculation area. Then the digital elevation model based on the triangular grids is established through interpolation, and thus erosion and deposition in various intervals can be computed from basic units of triangular prism in order to improve computational precision. Through the computer processing of erosion and deposition, the variations of bed surface in the arbitrarily selected areas are ecasily computed and analyzed. Moreover, the generated grid is directly applied to a 2-D mathematical model for erosion and deposition on the bed surface so that the results calculated from each node can be verified to enhance the reliability of the mathematical model. |
| |
| Keywords: | non-structure mesh erosion and deposition computer processing |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《海洋工程》浏览原始摘要信息 |
| 点击此处可从《海洋工程》下载免费的PDF全文 |
