when i meshing it in ansys ICEM its blade don't mesh. so kindly suggest me how to design and to mesh it
You have to use mesh tool where you have to divide the line as per the edge of element size then mesh it with sweep option. Before this you have check your element type and material properties..Once quad mesh will not work then go for triangular or tetrahedral mesh..
I have been thinking to isolate the geometry for a single blade (alongside with the suitable frontiers hub, shroud, periodical interfaces etc.) and create a topological block having the O-grid already mapped over the blade surface, but first of all check carefully if the association between edges and grouped curves has been made correctly. Furthermore you can try to modify the edge parameters such as number of nodes or mesh law along swapped edges inside the pre-mesh parameters menu. If everything were correct try using the transformation tool to create a number of geometrical copies corresponding with your number of blades, and copy (rotate) the periodical blockings. In this way a merged entity with all topological blocks united will be obtained. For a helicoidally shape approach of the blade the periodical frontiers (surfaces) have to follow the main helicoidally definition.
Best regards.
I will try to provide you with a mesh, if you can share your CAD file (iges or step format).
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