Boundary conditions are specified by recharge periods. For each recharge period, boundary conditions must be assigned to each segment of the exterior boundary plus any interior boundaries. (A segment is the straight line connecting two adjacent vertices on a boundary.)In VS2DHI, a boundary condition applies to the entire segment. To vary the boundary condition along a segment, it is necessary to insert vertices on the segment to subdivide it into smaller pieces. Different boundary conditions can then be specified on the subdivided pieces.
There are two types of boundary conditions:
Note: For any recharge period, if you do not assign a boundary condition to a boundary segment, that segment will be assigned a flow boundary condition of "no flow across boundary" and a transport boundary condition of "no energy mass flux across boundary."
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