{"id":363053,"date":"2024-04-18T20:01:26","date_gmt":"2024-04-18T20:01:26","guid":{"rendered":"\/forum\/forums\/topic\/convergence-error-fluid-structure-interaction\/"},"modified":"2024-04-18T20:01:26","modified_gmt":"2024-04-18T20:01:26","slug":"convergence-error-fluid-structure-interaction","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/convergence-error-fluid-structure-interaction\/","title":{"rendered":"Convergence Error – Fluid Structure Interaction"},"content":{"rendered":"

I am trying to simulate Fluid Structure Interactions on ANSYS with fluent, transient structural and system coupling. My model is set to simulate flutter – a bar of aluminum passing through multiple sections of airfoils (to induce flexibility) and a weight at the top to add inertia. Everything is good until I update the solution in the system coupling module. I am having issues with convergence and would appreciate any feedback on my setup (it diverges at the first time step – 0.1 second). I have dropped the time step to 1e-08 and I still have the same error. Any help will be greatly appreciated.<\/p>\n","protected":false},"template":"","class_list":["post-363053","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t