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GfsSource is used to associate a source term to a variable.

The syntax in parameter files is:

 [ GfsSourceScalar ] [ GfsFunction ]

The dimensions of the GfsFunction are the dimensions of the variable per unit time (except when the variable is the pressure "P", see next).

When GfsSource is used for the pressure "P" used by the GfsSimulation solver, the source term is a "volume source" (or sink) S such that:

.u = S


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