The value of the tag determines the evaluation of the constraint condition. Possible values for the tag constraint_directions are 'greater' or 'lower'.

If the value greater is given the condition calculated_flux_value > constraint_threshold is evaluated. If the value 'less' is given the condition calculated_flux_value < constraint_threshold is evaluated.

Additional info

From ProcessLib/BoundaryConditionAndSourceTerm/ConstraintDirichletBoundaryCondition.cpp line 281

This is a required parameter.
Data type: std::string
Expanded tag path: process_variables.process_variable.boundary_conditions.boundary_condition.ConstraintDirichlet.constraint_direction
Go to source code: → ogs/ogs/master

Used in the following test data files

[→ ogs/ogs/master | → doc] Parabolic/LiquidFlow/SimpleSynthetics/constraint_bc_1e3.prj