Validating models

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When you are working with info

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works.

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WS pro you will need to validate models to ensure

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they are hydraulically sound before simulations can be run.

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The validation process involves finding errors and warnings if

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any exist and then fixing them one at a time

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in the ribbon, click the file tab

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open open transportable database,

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then navigate to your desktop,

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select the data folder

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and locate the session three folder.

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Click the file named validating models dot WPT and open it.

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A window opens showing the contents of the transportable database

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press and hold shift as you click both the session 03

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and session 03 lock model groups to select both of them.

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Then

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right click and select copy

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in the model group window, right click database and click paste all

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close the transportable database window

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in the model group window, expand the session 03 model group,

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click and drag the bridge net network to open the GEO plan and

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the bridge con control from the model group window into the workspace,

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then expand the demand diagram group and click and drag

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the bridgetown demand diagram to open it as well.

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Alternatively,

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if you have the control and demand diagram already associated with the network,

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they will open with the network

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to start the validation process.

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You can either click the validate button in the toolbar

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or click the network tab and select validate network.

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The network validation dialogue opens

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in this exercise,

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you can see the network and its associated control in their respective group boxes.

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If the control and demand diagram are not associated,

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you will need to drag and drop them into their respective boxes,

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electricity tariff,

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alternative demand and solute data objects can be validated if necessary.

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Click. Ok,

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an output window appears and lists several errors and a warning,

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red circles with exclamation marks indicate

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errors and yellow circles indicate warnings.

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Errors mean the model cannot be run until they are resolved.

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Warnings mean a model can be run but

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that there is something outside of default parameters.

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You may not need to resolve a warning if

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it represents a change or setting you intended.

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Best practice is to start at the top of the list and resolve each one. In turn.

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Sometimes resolving one error will solve others that may be linked to it in some way,

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then rev validate the model. After fixing each error.

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Double click, the error named E 0040

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notice. However, that nothing happens.

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This is because it is a connectivity issue as listed in the field column,

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double click the next error.

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This time a grid appears showing the exact location of the problem

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to resolve the connectivity error

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in the ribbon

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GEO plan tab, select tracing tools. And then connectivity trace

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the subnets

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found dialogue appears showing that there are two subnets

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that means there is a single connectivity break somewhere

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in the network separating it into two subnets.

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Click one of the

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subnets in this example. The second one

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and then click find selected subnets

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R E T

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close the dialog and then adjust the size of the output window by

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clicking and dragging the right side of the window to the left.

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You can now see the source of the

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connectivity issue in the GEO plan highlighted in red

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zoom in to see the error in more detail.

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In this example, a junction is not complete

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so water cannot flow from the reservoir upstream past this point

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to fix the connection in the toolbar next to the new object button,

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expand the dropdown and select link,

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click the new object button,

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the cursor changes to indicate it is ready to create a new link.

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Click the node at the end of the upstream portion of the network to

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place a start point and then click again on the node across from it.

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In the create new link dialog, expand the type dropdown and select pipe.

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Click. OK.

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In the properties window,

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you can see the properties for the new pipe you just created.

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In this example, the small cells next to the diameter and CW

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K fields are red

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this means you are required to enter values for those properties,

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set the diameter of the pipe by entering 250 in the diameter row.

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Then enter a value of 0.1 in the C W K or friction coefficient field.

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Close the property's window

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validate the model again and click. OK. In the following dialogue.

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Now the output window only lists three errors as the connectivity issue is solved.

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Solving that issue also resolved the warning that had previously appeared here

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in the output window.

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The reservoir error is now at the top of the list,

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click and drag the edge of the window to expand it.

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And you can see top water level listed in the field column,

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double click the error to view its details in a grid.

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In the first row, you can see that the cell in the top water level column is blank.

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This is a common error that often happens

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when importing data from other sources such as GIS

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click in the type Boxx and enter the same value listed below it.

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Click in another cell to make sure the value you just entered is saved,

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then close the window

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validate the model again.

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The output window now lists only one error again emphasizing

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how fixing one error can sometimes automatically solve another.

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The final error is a control node problem in a valve,

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double click the error to open a grid to see its details,

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you can fix the error in the grid but it is sometimes easier to do so. In the GEO plan

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at the bottom of the left column, click the green cell with the black arrow,

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then click select and find in GEO plan.

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This changes the window from a grid to a zoomed in

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view of the GEO plan with the valve highlighted in red

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in the toolbar,

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click the properties button and then click the valve to view its properties

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because this is a pressure reducing valve prv. It requires a control node.

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In this example, the node immediately downstream will be used as the control

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at the top of the property's window. Click the S T 28363410 node ID

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copy it by pressing control C

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and then paste it into the combo box in the control node row.

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You can also expand the drop down to

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scroll through a list of available control nodes.

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But using the copy paste function simplifies the process

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validate the model. Again,

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the output window is now cleared of all errors and warnings.

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Meaning that the model is now hydraulically sound

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and ready to be run through simulations.