Working with Storage nodes
- 21 Aug 2022
- 1 Minute to read
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Working with Storage nodes
- Updated on 21 Aug 2022
- 1 Minute to read
- Print
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The lower half of the Storage node Properties Window is shown below.
All parameters in the top of the form are identical to Junction nodes.
The Evaporation Factor is the fraction of evaporation occurred. This can be set as a value between 0 and 1 by clicking in the field, typing the new value and clicking the Enter key. The default value is 0 (no evaporation); full evaporation occurs if this value is set to 1.
The Seepage Loss field is set to NO by default. Clicking in the field provides access to 3 dots to the right, which then provide access to the Storage Seepage Editor window. Here you can specify soil properties that determine seepage loss through the bottom and sloped sides of the Storage unit.
It is necessary to specify a Storage Curve to describe the Storage unit shape (i.e. how the surface area varies with water depth). This can either be in FUNCTIONAL or TABULAR form.
A FUNCTIONAL curve is of the form:
Area = A (Depth)B+ C
Where the coefficient A, exponent B and constant C are then provided in the Coefficient, Exponent and Constant fields below.
A TABULAR curve is specified manually. Double-click in the Curve Name field to open the Curve Editor and define a new curve.
Top Tips to Define Curves
If no curve is defined and the field is shown blank (or with a *), we recommend double-clicking the field to open the Curve Editor and entering a name for your curve, alongside the data required. It is also possible to name your curve in the field initially before double-clicking on this name, however the name then must be provided a second time in the Curve Editor window.
If you have previously defined a curve (and so a curve name is provided in the field), you can double-click the name to edit the details.
If you would like to define a new curve whilst retaining the previous curve, click in the field and use the Backspace key to delete the name so the field is blank. Then double-click to enter the Curve Editor, and enter your curve details (with a new name!) When you return to the Divider node properties, you will now notice your previous curve and new curve are both available from the drop-down.
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