TAGGED: cavity, eigenmode, electric-field, mode-shape
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October 14, 2024 at 6:57 pmvsr30Subscriber
Hi,
I have been trying to visualize cylindrical cavity modes for a cylindrical cavity with a high length-to-diameter ratio. After an eigenmode analysis, I did a sanity check by comparing the E-field vectors for each mode with what I found in textbooks. I found out that for a length-to-diameter ratio greater than 1, HFSS does not do a great job identifying the TE011 mode.Â
I was wondering whether it is a limitation in the student version.
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October 31, 2024 at 10:55 amDMARATHEAnsys Employee
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Hi VSR30,
Kindly note that eginemode solution depends upon the dimesion of the geometry, boundary conditions and material properties assignements.
If I assume that you have correctly assigned bondary conditions and material properties, the dimensions play a crucial role. Since you have a cylindrical cavity,
mesh represenation is not always a true to the actaul geometry.
You can try plotting the mesh with your current run and see whether it respresent a curved surfaces accurately or not. If curved surfaces are not meshed properly, you can apply certain mesh settings as shown
Make sure that adaptive passes are converged else you can increase number of adapative passes from solution setup.
Also note that for Ansys Electronics Desktop Student verstion there are limitations on mesh elements (64000 elemets) Please check link :
Ansys Electronics Desktop Student Version | Free Software Download
Hope this help.
Thanks.
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