Specify the normal direction of the preexisting single crack or parallel cracks. The direction is based on global coordinates. Normally, the default value, zero, should be taken because the fracture direction will be estimated using mechanical deformation.

Additional info

From ProcessLib/HMPhaseField/CreateHMPhaseFieldProcess.cpp line 205

This is a required parameter.
Data type: std::vector<double>
Expanded tag path: processes.process.HM_PHASE_FIELD.specific_fracture_direction
Go to source code: → ogs/ogs/master

Used in the following test data files

[→ ogs/ogs/master | → doc] HMPhaseField/Beam/beam.prj
[→ ogs/ogs/master | → doc] HMPhaseField/Consolidation/consolidation.prj
[→ ogs/ogs/master | → doc] HMPhaseField/KGD/KGD.prj
[→ ogs/ogs/master | → doc] HMPhaseField/LiquidFlowInFracture/fractureflow.prj
[→ ogs/ogs/master | → doc] HMPhaseField/Mechanics/bar.prj