Using Manually Generated Stopping Criteria

Each criteria node has its own properties.

You can create multiple Fixed Physical Time and Fixed Steps stopping criteria. Multiple instances of these stopping criteria, when combined with other stopping criteria (using Logical Rule AND and OR) can define complicated sets of stopping rules for multi-time-scale problems.

Fixed Physical Time Properties

Enabled

When On, this criterion is used for stopping the solver.

Fixed Physical Time

The amount of physical time starting from Start Physical Time at which this criterion is satisfied. The default is 0.1 second.

Start Physical Time

The time at which the fixed physical time begins. The default is 0. Read only.

Logical Rule

Defines how this criterion interacts with other stopping criteria that have been enabled.

AND

Requires that this criterion, along with one or more other criteria with the Logical Rule set to AND, all be satisfied before stopping the solver.

OR

Indicates that satisfying only this criterion is sufficient to stop the solver.

Criterion Satisfied

Indicates if the stopping criterion has been satisfied (read-only).

Fixed Steps Properties

Enabled

When On, this criterion is used for stopping the solver.

Fixed Steps

The number of steps to take before this criterion is satisfied, starting from Start Steps. The default is 1000 steps.

Start Steps

The number of the step at which the fixed steps begin. The default is 0. Read only.

Logical Rule

Defines how this criterion interacts with other stopping criteria that have been enabled.

AND

Requires that this criterion, along with one or more other criteria with the Logical Rule set to AND, all be satisfied before stopping the solver.

OR

Indicates that satisfying only this criterion is sufficient to stop the solver.

Criterion Satisfied

Indicates if the stopping criterion has been satisfied (read-only).

Minimum Inner Iterations Properties

Minimum Inner Iterations

The number of inner iterations to take before this criterion is satisfied. The default is 1 iteration.

Enabled

When On, this criterion is used for stopping the solver.

Criterion Satisfied

Indicates if the stopping criterion has been satisfied (read-only).

Logical Rule

Defines how this criterion interacts with other stopping criteria that have been enabled.

AND

Requires that this criterion, along with one or more other criteria with the Logical Rule set to AND, all be satisfied before stopping the solver.

OR

Indicates that satisfying only this criterion is sufficient to stop the solver.

Adding the Manually Generated Stopping Criteria

To make one of these stopping criteria available, right-click the Stopping Criteria node, select New Criterion, and select the criterion from the drop-down menu. Each time-related solver, such as the Explicit or Implicit Unsteady solvers, has an identical Stopping Criteria node.