slouie
Ansys Employee

Domain solver uses the direct solver method, but there are iterations between domains (FEM domain and IE domain) so it's not purely a direct solve. This has always been the case. Failure to converge after 200 iterations is usually indicative of a poor setup. Please refer to Antenna training to make sure you're following best practices in setting up your model:


https://support.ansys.com/AnsysCustomerPortal/en_us/Knowledge%20Resources/Tutorials%20&%20Training%20Materials/Training%20Files/ANSYS+HFSS+for+Antenna+Design+Training+17.0


Thanks.