Boundary conditions and projection#

Boundary settings determine how the regional and site models communicate. Regional boundaries describe the outer aquifer, while site boundaries can use static conditions or dynamically projected regional results.

Regional boundary conditions#

regional_bctype accepts open, closed, or porv. For porv, append bottom, right, top, and left pore-volume values.

regional_bctype = ["open"]

Site boundary conditions#

site_bctype accepts:

open: Use open site boundaries.
closed: Use closed site boundaries.
porv: Apply user-provided pore volumes in bottom, right, top, and left order.
porvproj: Add pore volumes calculated from the regional reservoir.
flux: Project regional fluxes to the site boundaries.
pres: Project pressures using all available regional pressures along each side.
pres2p: Project pressures using two points for each side.
wells: Add four injectors and four producers at the site-boundary midpoints.

site_bctype = ["open"]

Temporal interpolation#

For pres and flux conditions, add interp to use linear interpolation in time. Existing-deck workflows also expose projection frequency and telescopic time-partition controls through the command line.

Comparison workflows#

The reference model provides the high-resolution comparison solution. The regional simulation supplies the projected boundary information, and the site simulation evaluates how well each boundary treatment reproduces the reference behavior. See Hello world for flux, pressure, projected-pore-volume, and boundary-well examples.