Under the "HFSS"->"Mesh Operations"->"Initial Mesh Settings", you can adjust the initial mesh to be more coarse.
Good Luck!
(here 7 el yagi antenna)
My computer is too old anyways. A 1500 MHz Athlon with 1,3 GB RAM. It takes ages to analyze. My goal is to learn HFSS not to work with it here.
7 el Yagi ... it is about 70000 tetrahedra by now. Is an example. No conversion yet. I am not really clean with all the analysis, there are still errors in it, something I don´t do correctly. For a 3 el yagi I get good results. 7 el might be too much. grrrrrrrrrrrrrrrrrrrr. Damn computer.
Such yagi antenna is simple in MoM, but a large model in FEM. Get a fast multi-core machine with >32GB and HFSS makes sense to use. On your computer, it's the wrong tool because the method requires massive numbercrunching with much RAM.
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