关键词: 非结构网格生成, 布点方法, 网格光滑, 圆堆砌, 泡泡堆砌

Abstract: Discretizing the domain，i.e.mesh generation，is the first step in the application of finite element method to solve the partial differential equation systems.The convergence and accuracy of the finite element method depend on the mesh quality，so many mesh generation methods are proposed and developed in various research fields.This paper focuses on the methods of point placement for unstructured mesh generation，and presents a brief survey of typical point placement methods.

Key words: unstructured mesh generation, node placement, mesh smoothing, circle packing, bubble packing