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FEMWATER Flows
FEMWATER Flows
Computed flows can be automatically summed and displayed for FEMWATER simulations. To enable this option,
the Save flux file option must be selected in the FEMWATER Output Control dialog prior to saving the
FEMWATER model. When this option is selected, FEMWATER saves a lumped nodal flow data set file as part of
the FEMWATER solution. This file is automatically read into GMS as part of the FEMWATER solution.
Once a FEMWATER flux file has been read into memory as part of a FEMWATER solution, the computed flux
through a set of nodes can be displayed simply by selecting the nodes. The flow budget (in, out, net) for the selected
nodes is displayed in the Status Bar at the bottom of the GMS window. The flow budget is only displayed if the
active solution is a FEMWATER solution.
It should be noted that lumped nodal fluxes are only non-zero for boundary nodes where a boundary condition has
been assigned.
Point Source/Sink BC
The Point Source/Sink BC command is used to assign a flow rate to a node. This option is typically used to assign
flow rates to interior nodes to simulate injection or extraction wells. When a point source/sink is first assigned to a
node, the node should be selected with the Select Nodes tool. The Point Source/Sink BC command is then selected
and the Point Source/Sink BC dialog appears. Both a flow rate and a concentration may be specified at a point
source/sink node. The values can be constant or transient.
Existing boundary conditions can be deleted by selecting the boundary condition with the Select Boundary Nodes,
Select Boundary Faces, or Select Wells tool and selecting the Delete BC command from the FEMWATER menu.
The Select Well Tool
When a point source/sink boundary condition is applied to a node, a well symbol is placed on the node. The Select
Wells tool can then be used to select the node rather than the Select Nodes tool whenever the well needs to be edited
or deleted. The Select Wells tool is easier to use than the Select Nodes tool when there are a large number of nodes
since it only selects nodes with point source/sink boundary conditions.
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