三角形网格生成法在海岸工程潮流数学模型中的应用

Application of triangular grid generation method in tidal mathematical models of coastal engineering

基于Ｐｏｉｓｓｏｎ方程网格生成法，考虑到海岸工程的复杂性，分区处理了Ｐｏｉｓｓｏｎ方程的源项，得到了适应海岸工程布置的三角形网格。该网格在庄河海域港池航道开挖潮流数学模型计算中，较好地反映了工程建设前、后的潮流形态，还避免了由于网格划分不理想带来的计算误差。

On the basis of Poisson equation, a new triangular grid generation method is developed in this paper. In order to make the triangular grids in the model well fitted to the complicated boundaries of coastal engineering, the source terms in Poisson equation are selected properly for different subregions. This grid generation method is applied in the tidal model of Zhuang sea region, and the tidal currents before and after theconstruction of harbour and navigation channel are well reproduced and predicted respectively. The error in the modelling due to the nonideal grid generation is basically avoided.