I think you need to create structured grids, see gmsh help manual Section 6.3.2 Structured grids. -- Cai Yuanwu 蔡园武 Dept. of Engineering Mechanics, Dalian University of Technology, Dalian 116024, China -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://www.geuz.org/pipermail/gmsh/attachments/20111218/fc441f94/attachment.html>