Weir (Water Overlay): Difference between revisions
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* [[Weir formula (Water Overlay)]] | * [[Weir formula (Water Overlay)]] | ||
* [[Weir height test case (Water Module)]] | |||
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{{WaterOverlay hydraulic structure nav}} | {{WaterOverlay hydraulic structure nav}} |
Latest revision as of 09:30, 17 January 2023
Weirs are effectively small dams in the water, and allow water to flow from a water body with a higher water level to a lower water level. Any water exceeding the height of the weir can flow over it, increasing the throughput as the water level increases. Strictly, water can flow over the weir in either direction.
A weir is a line-based building.
Icon | Key | Unit | Range | Description | Default value |
---|---|---|---|---|---|
WEIR_HEIGHT | m + datum | -10000 to 10000 | The height of the weir. Water can flow past the weir when the water level exceeds the weir's height. | n/a | |
WEIR_WIDTH | m | 0 to 10000 | The width of the weir. | 5 | |
WEIR_ANGLE | geo angle (0-360°) | -1.7976931348623157E308 to 1.7976931348623157E308 | The top down orientation angle of the weir. | 0 | |
WEIR_COEFFICIENT | coefficient | 0 to 10000 | The flow coefficient related to the shape of the weir. | 1,1 | |
WEIR_TARGET_LEVEL | m + datum | -10000 to 10000 | The Weir can be configured to adjust it's height automatically in order to reach the target upstream water level. This parameter is optional. | n/a |
Notes
- If a weir is placed in a waterway, and the waterway is not otherwise interrupted, water might be able to flow past the weir via the waterway itself. In order to obstruct the waterway, one of two options can be chosen:
- Define the weir angle, in which case the Tygron Platform will automatically raise the DEM in the simulation based on the position, width and angle of the weir.
- Manually raise the terrain height using the terrain height tool or applying a terrain height GeoTIFF.
- Weirs can be read in as a point. The Tygron Platform will precompute how the weir should be modeled as a line.
How-to's
- How to correct multiple buildings on the same location
- How to correct weir, pump, or culvert drawn as point
- How to correct a building in an uninterrupted waterway
- How to correct a building at the edge of the project area