Learning Forum

[Saeed]

Hello,

I am trying to simulation a mixing tank using CFD-DEM semi resolved method and I have a problem with the convergence of the PI controller. after each iterations all residuals parameters value like continuty goes down but the PI controller fluctuates and goes up and down and does not converge. 

can you please help me with it?

[Jackson Gomes]

Saeed

The PI controller is case-dependent, and the coefficients must be calibrated for each case.

For more information about PI controller go to superior toolbar > HELP > Manuals > User Manual and search for the chapter About Setting the PI controllers in 2-Way Fluent Semi-Resolved Coupling
Simulations.