多面约束棱台体全六面体网格生成算法

利用四角点双线性插值反映射法确定两多边域间的映射点;运用约束引导线和节点等参光顺法实现对多边形的四边形分解;最后,结合超限映射法与分层原则实现该类实体全六面体有限元网格生成．文中算法拓广了超限映射法的应用范围．实例表明：该算法简单、效率高、生成单元的质量好。

All-Hexahedral Mesh Generation for Prismoid Subject to Geometry-Topology Constraints

The polygonal base of prismoid is decomposed into quadrangles, the quadrangular vertices are located by using the node constraint principle and isoparametric smoothing scheme. Along the height direction, each prismoid is sliced into parallel layers. Through four-corner-point bilinear interpolation, inverse mapping of arbitrary point between two polygonal domains is established. Finite element meshes are generated automatically by combining the above schemes with transfinite mapping method and layered principle. This algorithm extends the application of transfinite mapping method. Results of test examples show the effectiveness and robustness of proposed algorithm.