During an evolution or a transient scheme, you may be interested in interrupting the evolution when one or several criteria related to a field are satisfied. Examples of such criteria include when the minimum of temperature reaches a lower limit:

or when the norm of the velocity along the wall reaches a lower limit during an evolution on the slip coefficient:

In the sections that follow, the criteria are related to fields, and the interruption of the evolution due to convergence trouble will not be addressed.

The criteria are evaluated at the end of a successful step. If the criteria are satisfied, the evolution is interrupted. Otherwise, the evolution continues.