You can select the maximum number of iterations you want to perform. The default number is 10, which is sufficient when the Newton-Raphson method is used. If you are using a Picard scheme or a decoupled scheme, a higher value may be needed, depending on the precision required. For the Picard scheme, the maximum number of iterations is automatically increased from 10 to 30. Ansys Polyflow’s expert system that helps for convergence may in some cases increase the number of iterations beyond the specified maximum number on the basis of past convergence history. Typically this will be done if the system of equations is "almost converging," but a few more iterations are needed.

For linear problems, such as Stokes flow or heat conduction, Ansys Polyflow performs two iterations by default. In fact, a second iteration is needed only to verify that the result of the first iteration remains unchanged. Thus, if you know in advance that your problem is linear, you are advised to require only one iteration.

In the Numerical parameters menu, select Modify numerical parameters for iterations. Then select Modify the max number of iterations.