Mesh Geometry Error ANSYS 2020R2 edX course

EzeNaval1983

I am having trouble when trying to achieve the right geometry in the mesh even though I follow the right steps. I will paste the screenshots step by step for better understanding. I get the warning : *****Some local edge element sizes are larger than the global maximum size. This can cause bad quality elements.**

Happy new year and thank you in advance for your help!

Rob

Does the tutorial really set the left side number of divisions (cells) as one? I know Mechanical meshes tend to be less refined than for Fluids in many cases but that looks a bit extreme.

EzeNaval1983

Yes, the idea is to calculate first with an 8 nodes mesh and then refine it to see how the results improve. After trying "sizing to edges" according to course instructions, I couldn't reach the required geometry. I tried making the mesh with face mesh instead, sizing the elements to 1 meter, and I got this geometry with the error message "Some local body element sizes are larger than the global maximum size, This can cause bad quality elements". I would like to know how to solve this error in ANSYS 2020R2. You can see this in the following screenshots:

Rob

Fair enough. Check the sizing settings in the Meshing section, I suspect the face sizing is less than 1m to it's trying to add some more cells in. Increase that or use mapped mesh type.

EzeNaval1983

Thanks Rob for your answer,

In geometry I have found a question mark, it seems that something is wrong in the geometry generation but I cannot find the mistake, this could be generating the unfair mesh generation what do you think? (After trying the proposed solution I still got the same unfair mesh)