[gdbaldw]

Zhou Bin,

blockMesh is suitable for simple geometries, which yours is not. However, in about an hour I drafted an example of your mesh using Blender and Calculix. Example images and file are attached. I did this simply to see if my technique works for your kind of geometry, which it does. See the following URL for an overview of the technique:

Outline of method

Example Surface:


Image of surface mesh:


The Blender file:


I would expect you'd need a few days to learn Blender and a day for Calculix, but this would be more rewarding and likely faster than trying to use blockMesh.

Good Luck,
Doug