OpenFOAM guide/Explicit equation

Explicit equations are those whose dependent variables rely on the values of one another from a previous time. In other words, the dependent can be solved individually, without an iterative method.

OpenFOAM's fvc namespace defines a group of explicit operations.

Explicit methods have a more stringent timestep size restriction than implicit methods, but their accuracy is greater. Therefore they are preferable for transient problems.

See also:

• Implicit equation