STOMP

Boundary Conditions Options (HYDT-KE)

The Boundary Conditions Card for this operational mode can be used to specify boundary conditions for the energy, fluid flow, or salt.  Boundary conditions are one of two types: 1) Dirichlet or 2) Neumann.  Dirichlet-type boundary conditions specify state conditions at the boundary surface centroid (i.e., temperature, pressure, phase saturation).  Neumann-type boundary conditions specify either fluxes (i.e., heat flux, fluid flux, salt flux) across a boundary surface.   

Energy Boundary Condition Options

Dirichlet

Dirichlet-type boundary where the temperature is specified at the boundary surface centroid.

Inflow

Dirichlet-type boundary where the temperature is specified at the boundary surface centroid. Energy is allowed to migrate across the boundary surface only via fluid advection in the direction opposite of the boundary-surface normal (i.e., into the domain).

Initial Condition

Dirichlet-type boundary where the temperature is set to be equal with the temperature at the grid-cell centroid at the start of the simulation.

Neumann

Neumann-type boundary where the heat flux is specified across the boundary surface.  Positive flux is in the direction of the surface normal.

Outflow

Energy migrates across the boundary surface only via aqueous and gas phase advection in the direction of the boundary-surface normal (i.e., out of the domain). As diffusive heat transport across the boundary surface is not considered the temperature entry is ignored.

Zero Flux

Neumann-type boundary where the heat flux is zero.

Fluid Flow Boundary Condition Options
Warning

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.

Salt Boundary Condition Options
Warning

Salt Boundary Condition Options are available only if the Flow Boundary Condition Option is not zero flux.

Aqueous Relative Saturation

Dirichlet-type boundary where the aqueous relative saturation of salt (in terms of salt saturation to salt solubility) is specified at the boundary surface centroid. Salt migrates across the boundary surface via diffusion or advection of the aqueous phase.

Relative Saturation-Inflow

Dirichlet-type boundary where the aqueous relative saturation of salt (in terms of salt saturation to salt solubility) is specified at the boundary surface centroid. Salt is allowed to migrate across the boundary surface only in the direction opposite of the boundary-surface normal (i.e., into the domain).

Aqueous Mass Fraction

Dirichlet-type boundary where the salt mass fraction in aqueous liquid is specified.

Mass Fraction-Inflow

Dirichlet-type boundary where the salt mass fraction in aqueous liquid. Salt is allowed to migrate across the boundary surface only in the direction opposite of the boundary-surface normal (i.e., into the domain).

Zero Flux

Neumann-type boundary where the salt flux is zero.

Outflow

Salt is allowed to migrate across the boundary surface only in the direction of the boundary-surface normal (i.e., out of the domain).

Initial Conditions

Dirichlet-type boundary where the aqueous saturation is set to be equal to the aqueous saturation at the grid-cell centroid at the start of the simulation. Salt migrate across the boundary surface via diffusion or advection of the aqueous phases.

 

 

 

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