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Deactivated components allow water to pass through that component as if it was not there. That is, deactivated links behave as if they are straight through routing links. Deactivated nodes behave as if they are a gaugea deactivated component's downstream flow is always the same as its upstream flow. Similarly constituents and orders are not effected by the deactivated component. This allows you to test the effect of component(s) on the simulation. For example, the effectiveness of a proposed storage can be modelled by running the scenario twice; once with the storage node activated and once with it deactivated.
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Deactivating large sections of a model (eg. a network branch) will improve performance by decreasing model run-time. This can be useful when you are working with part of a model only, eg. during calibration. |
Nodes and links can be deactivated by two ways, either:
- select the component(s), right-click to open the contextual menu, select Deactivate; or
- Right-click on a single component, choose Multi-deactivate to deactivate the selected component and either all upstream or all downstream components, based on your choice from the sub-menu.
Deactivated nodes are indicated by a grey circle backlash symbol on top of the node icon. Deactivated links become a solid grey line. Figure 9 shows what happens when Middle Gauge alone was deactivated using Deactivate (left pane), or Middle Gauge and all upstream components were deactivated using Multi-deactivate » This and all upstream, or Middle Gauge and all downstream components were deactivated using Multi-deactivate » This and all downstream (right pane).
Note the following about deactivation:
- Multi-deactivate and multi-activate does not work if traversing the network leads back to the starting component. Source will notify you if this occurs. For example, it is not possible to use multi-deactivate (either upstream or downstream) on either the environmental demand node or the water user node in Figure 9.
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Deactivated
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- Two Warning notifications are generated by Source when running a model with deactivated components:
- One indicates how many components were deactivated
- The other indicates how many components were excluded from the run order. Excluding components from the run order will reduce run time.
- Deactivation has not been implemented for a wetland cluster. If a component of a wetland cluster is deactivated, there will be a run time error.
- If a splitter is deactivated, all the flow, constituent and orders are passed down the non-effluent link.
- If a supply point is deactivated, the connected water user will not receive water.
Figure 9. Node deactivation comparison