Outfall-Boundary Condition
Outfall-Boundary Condition Attributes
| Attribute | Description |
|---|---|
| Boundary Condition Type | Lets you define what type of boundary condition the currently highlighted element is operating under. The value chosen here affects the availability of other fields. You can choose from: Free Outfall - No tailwater condition. No further input is necessary. Time-Elevation Curve - Enables Time-Elevation Curve field. Elevation (User Defined Tailwater) - Enables the User Defined Tailwater field. Elevation-Flow Curve - Enables Elevation Flow Curve field. Boundary Element - Enables Boundary Element field, allowing you to specify the element to which flow received by the outfall is discharged. Normal - No further input is necessary. Normal in this case means that the depth at the outlet is the normal depth for the last conduit or channel before the outlet. Tidal - Enables the Cyclic Time-Elevation Curve field. Crown - No further input is necessary. The Crown boundary type is not supported for use in the SewerGEMS Dynamic Wave solver. |
| Tidal Gate? | If True, back flow is restricted from entering the system from the outfall. |
| Time-Elevation Curve | Lets you describe the elevation changes at the boundary condition over time. Click the Ellipsis (…) button in this field to open the Time-Elevation Curve dialog box (see "Time-Elevation Curve Dialog Box"-171). It is available only when the Boundary Condition Type attribute is set to Time-Elevation Curve . |
| Elevation (User Defined Tailwater) | Lets you enter a value for tailwater at the boundary. It is available only when the Boundary Condition Type is set to User Defined Tailwater . |
| Elevation-Flow Curve | Lets you define the elevation changes at the boundary condition over a range of flows. Click the Ellipsis (…) button in this field to open the Elevation-Flow Curve dialog box (see Elevation-Flow Curve Dialog Box). This property is available only when the Boundary Condition Type attribute is set to Elevation-Flow Curve . |
| Boundary Element | Lets you choose the boundary element for the currently highlighted element from all of the valid elements in the network. To use this feature, click Select in the Boundary Element field. Move the cursor over the drawing pane and click the element you want to select for the boundary. This property is available only when the Boundary Condition Type attribute is set to Boundary Element . Press the Esc key to exit out of "Select" mode. |
| Cyclic Time-Elevation Curve | Lets you describe the elevation changes at the boundary condition that repeat over time. Click the Ellipsis (…) button in this field to open the Cyclic Time-Elevation Curve dialog box (see "Time-Elevation Curve Dialog Box"-171). It is available only when the Boundary Condition Type attribute is set to Tidal . |