Fluid Flow Boundary Condition Options are available only if the Energy Boundary Condition Option is not of type Neumann.
Dirichlet
Dirichlet-type boundary where the aqueous pressure is specified at the boundary surface centroid.
Dirichlet-Inflow
Dirichlet-type boundary where the aqueous pressure is specified at the boundary surface centroid. Fluid is allowed to migrate across the boundary surface only in the direction opposite of the boundary-surface normal (i.e., into the domain).
Dirichlet-Outflow
Dirichlet-type boundary where the aqueous pressure is specified at the boundary surface centroid. Fluid is allowed to migrate across the boundary surface only in the direction of the boundary-surface normal (i.e., out of the domain).
Hydrostatic
Dirichlet-type boundary where the aqueous pressure is set to be in hydrostatic equilibrium with the aqueous pressure at the boundary surface centroid of the lowest i, j, k indexed node.
Hydrostatic-Inflow
Dirichlet-type boundary where the aqueous pressure is set to be in hydrostatic equilibrium with the aqueous pressure at the boundary surface centroid of the lowest i, j, k indexed node.Fluid is allowed to migrate across the boundary surface only in the direction opposite of the boundary-surface normal (i.e., into the domain).
Hydrostatic-Outflow
Dirichlet-type boundary where the aqueous pressure is set to be in hydrostatic equilibrium with the aqueous pressure at the boundary surface centroid of the lowest i, j, k indexed node.Fluid is allowed to migrate across the boundary surface only in the direction of the boundary-surface normal (i.e., out of the domain).
Initial Condition
Dirichlet-type boundary where the aqueous pressure is set to be in hydrostatic equilibrium with the aqueous pressure at the grid-cell centroid at the start of the simulation.
Initial condition-Inflow
Dirichlet-type boundary where the aqueous pressure is set to be in hydrostatic equilibrium with the aqueous pressure at the grid-cell centroid at the start of the simulation. Fluid is allowed to migrate across the boundary surface only in the direction opposite of the boundary-surface normal (i.e., into the domain).
Initial Condition-Outflow
Dirichlet-type boundary where the aqueous pressure is set to be in hydrostatic equilibrium with the aqueous pressure at the grid-cell centroid at the start of the simulation. Fluid is allowed to migrate across the boundary surface only in the direction of the boundary-surface normal (i.e., out of the domain).
Neumann
Neumann-type boundary where the aqueous volumetric flux is specified across the boundary surface. Positive flux is in the direction of the surface normal.
Zero Flux
Neumann-type boundary where the aqueous volumetric flux is zero.