Hydraulic 2D Boundary Conditions
User can add boundary conditions in the Editing flow 2D windows (see here, "Structure" page). All defined boundary condition can be link to another node of the hydraulic network (outlet of watershed, junction, even boundary condition of other 2D structure) by a hydraulic link (see here for details about hydraulic network). Note that is not mandatory to link a boundary condition in the hydraulic network, as a boundary condition can be self defined.
To edit a boundary condition, the user has to select it and open the "Properties Window" as for other element of the network.
The type of the boundary condition depends on the way this boundary condition is linked (or not):
- if the boundary condition is connected to the downstream of a link, the boundary will be an inflow boundary that will receive the flow of the link.
- if the boundary condition is connected to the upstream of a link, the boundary will be an outflow, and the link will receive the flow of the boundary.
- if the boundary condition is not connected, the user can defined it as an inflow or an outflow.
In the network, boundary conditions are considered as node. Properties of boundary condition are quite similar to properties of junction node.
It is the case when the boundary condition is connected to the downstream of a link. In this configuration, the user has the ability to add an hydrograph (not mandatory) that will be summed with the hydrograph coming from the link. Once the check box "Inject gauged hydrograph" is checked the user can choose an hydrograph among those available in the "Gauged Hydrograph Manager".
It is the case when the boundary condition is connected to the upstream of a link. In this configuration, the user defined the boundary as a water level condition. This water level wan be constant or chosen among the water level series available in the "Water Level Series Manager".
When the boundary condition is not connected to any link, the user has to defined if this connection is a flow rate (inflow) or a water level (outflow).
For flow rate an hydrograph, the user has to choose a hydrograph among those available in the "Gauged Hydrograph Manager".
For a water level condition. This water level wan be constant or chosen among the water level series available in the "Water Level Series Manager".