Tuflow and estry manual Version 3
QH Flow vs Water Level (H
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- Table 4.23 1D Boundary Conditions (1d_bc) Attribute Descriptions
| QH
|
Flow vs Water Level (Head) (m3/s) | |
|
Assigns a flow to the node based on the water level of the node at the previous half timestep. | ||
|
QT |
Flow versus Time (m3/s) |
Assigns a flow into the node based on a flow versus time curve. A negative flow extracts water from the node. As of Build 2005-05-AN, a region can be used to equally distribute the flow hydrograph to all nodes that fall within the region. Any nodes that are a H boundary or are connected to a 2D SX cell are not included. |
|
QX |
Flow from an eXternal Source (ie. a 2D domain) |
Not required anymore. Was previously used to indicate that a 2D HX boundary is linked to the 1D QX boundary node. This is now determined automatically from 2D HX boundaries. |
|
Treatment |
The node can be wet or dry. The storage of the node influences the results. If the node storage is made excessively large, the flow hydrograph is attenuated, while if it is under-sized the node is likely to be unstable. | |
|
Combinations |
Any number of flow boundaries can be assigned to the same node. The final flow is the sum of the flows assigned. A connection to a 2D HX boundary (automatically set as a QX boundary at the node) can be applied in conjunction with other Q boundaries. | |
Table 4.23 1D Boundary Conditions (1d_bc) Attribute Descriptions