In this paper, an automatic hexahedral mesh generator for rotating machines is proposed. In the proposed method, hexahedral mesh with well-shaped elements is generated by means of transformation of coordinates of the analysis model. The main feature of this method is its applicability for meshing models with cylindrical shape due to provided coordinate transformation forward and backward between Cartesian coordinate system and the cylindrical coordinate system. The previously proposed hexahedral mesh generation method could easily control the mesh density and generate well-shaped elements. However, applying that method to rotating machines, due to their cylindrical shape always generates bad-shaped elements. Therefore, we improved and extended this mesh generation method to become fully applicable for meshing complex cylindrically shaped domains of the rotating machines. By using the newly proposed method, a well-shaped hexahedral finite element meshes could be generated suitable for fast and accurate finite element analysis of any cylindrically shaped domains.

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