利用映射法生成全四边形网格时存在两个问题：一是网格疏密过渡难，二是自动化程度不高。
There are two problems when using mapping method to generate all quadrilateral meshes: one is difficulty of mesh transition; the other is low degree of automation.
提出了一种适用于具有复杂海底边界的自由表面流动模拟算法？基于非结构化四边形网格的VOF法。
A novel VOF method based on unstructured quadrilateral mesh for free surface flows with complex seabed boundaries is presented.
该方法源于波前法的基本思想，从计算域边界向内域逐渐生成非结构化的四边形网格。
The method is base upon the advancing front technique which constructs unstructured mesh of the domain of interest from its boundary.
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