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Hi Everyone

What is the best strategy to have a high-order mesh starting from a Hex mesh around a wall-mounted cylinder?
So far, I have tried spherigon, high-order cylinder, and projectcad but I couldn't get a valid mesh.
When I try projectcad, it gives me an error message that it only works with tets and prisms.
The initial Hex mesh is created in Nastan format and then revised in Gmsh. Subsequently, NekMesh is used to convert it to xml. It is a valid mesh but building a high-order grid has been a challenge for me so far.

I appreciate your kind help.

Kind regards
syavash