Reply To: fluid-structure interaction

[Rahul]

There are a number of convergence controls, you can try changing following controls:
‒ Default # of Coupling Iteration
‒ Data Transfer Under Relaxation Factor: 1
‒ Perhaps 5 Fluent iterations per Coupling Iteration (for transients), but this is case dependent; Before starting an FSI simulation, you should run separate fluids and structural simulations using representative loads and Use settings that are as close as possible to the planned FSI simulation.
‒ A Time Step Size based on the physics you need to resolve
• 1/20th of the oscillation period corresponding to the highest structural frequency of interest
• Flow field Courant number etc.

Hope this helps!