Hi there,
I am trying to get my system to converged however I keep getting the error over maximum tolerance.
In my sif file I changed both the below value to get greater convergence values.
Steady State Convergence Tolerance = 1.0e10
Nonlinear System Convergence Tolerance = 1.0e9
Linear System Convergence Tolerance = 1.0e12
Linear System ILUT Tolerance = 1.0e3
Does something else need to be done in order to get the system to keep doing the calculations.
System Divergence over Maximum Tolerance

 Posts: 1158
 Joined: 25 Jan 2019, 01:28
 Antispam: Yes
Re: System Divergence over Maximum Tolerance
Convergence to a tolerance is more likely to happen with a larger number not a smaller number. However the smaller the number the more accurate the answer. So;
Steady State Convergence Tolerance = 1.0e10
Nonlinear System Convergence Tolerance = 1.0e9
Linear System Convergence Tolerance = 1.0e12
Linear System ILUT Tolerance = 1.0e3
Is a very accurate solution but more difficult to converge on than say;
Steady State Convergence Tolerance = 1.0e5
Nonlinear System Convergence Tolerance = 1.0e5
Linear System Convergence Tolerance = 1.0e7
Linear System ILUT Tolerance = 1.0e2
Which is much easier to converge on, but not as accurate as the first one, since the convergence tolerance is the second example is much larger than the first.
Steady State Convergence Tolerance = 1.0e10
Nonlinear System Convergence Tolerance = 1.0e9
Linear System Convergence Tolerance = 1.0e12
Linear System ILUT Tolerance = 1.0e3
Is a very accurate solution but more difficult to converge on than say;
Steady State Convergence Tolerance = 1.0e5
Nonlinear System Convergence Tolerance = 1.0e5
Linear System Convergence Tolerance = 1.0e7
Linear System ILUT Tolerance = 1.0e2
Which is much easier to converge on, but not as accurate as the first one, since the convergence tolerance is the second example is much larger than the first.