Setting up flushing simulations and schedules

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In info works.

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WS pro the flushing schedule object is used for development

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of flushing schedules and for carrying out a flushing simulation.

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The flushing schedule contains a sequence of actions to be used for cleaning a

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water distribution network by flushing the pipes

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with water one pipe section at a time

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to begin from the model group window.

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Expand the Bridgetown flushing model group,

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then click and drag network and control to the workspace to open them in the GEO plan

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before continuing.

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Make sure you have a normal or base run available to

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use as this is critical when performing a flushing simulation.

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Note that if you created one previously, you do not need to make a new one.

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If you need to create a new one from the model group window, right?

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Click run group and select new run.

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The schedule. Hydraulic run dialogue appears

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click and drag, flushing network,

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flushing control and Newtown DDG from the model group window

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to the network control and demand diagram boxes in the dialog

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type in the name base and then enable experimental

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click save, then run.

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Once you have created a base run,

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you can create a flushing object

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right click, Bridgetown flushing and select new flushing schedule group

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in the new name, flushing schedule group,

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pop up type in a new name or accept the default

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and then click ok.

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In the model group window, right,

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click the new flushing schedule group and select new flushing schedule

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again, you can enter a custom name or accept the default name.

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Next

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double click the new flushing schedule you created

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to open it in the flushing scheduler.

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The flushing scheduler dialogue has three tabs schedule

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criteria and hydrants

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and simulations.

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Start by opening the simulations tab

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in the model group window.

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Find the base flushing control run you created earlier,

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then drag and drop it into the base simulation box.

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Then click the create flushing simulation button.

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This automatically opens the flushing network in the GEO plan.

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Note that the flushing scheduler you created now appears in the model group window.

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Now click the criteria and hydrance tab

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or this example, leave the values in the criteria group box unchanged

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because this model does not contain hydrants at every node.

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You need to pick a default hydrant.

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First click and drag the pipes for flushing selection list

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into the GEO plan to highlight the branch of pipes.

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You will be flushing

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zoom to the branch.

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Then in the flushing schedule or dialogue hydrant's group box,

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click the pick hydrant button.

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Note that the cursor updates with an H

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in the GEO plan. Click a hydrant

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the grid in the hydrance group box updates with that hydrant properties.

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If you accidentally pick the wrong hydrant, you can right,

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click in the left margin and click delete row.

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Keep in mind that when performing a flushing simulation,

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you can use hydrants or nodes.

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However, if you use nodes, you must assign them the properties of a hydrant.

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If you have no hydrants in your network,

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you must enter the properties in the hydrants grid manually.

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Now click the schedule tab to open it.

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The actions group box is where you'll create

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a list and timeline of flushing actions.

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Click the add button.

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This automatically populates values for number and minimum

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interval in the first row of the grid

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in the name column, enter the name action one,

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expand the date time dropdown and pick a date and time that falls within the base run.

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You can also type in the values for day, month and year. If you prefer.

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If you need to,

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you can double click the base run to open the schedule,

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hydraulic run dialogue and verify the start and end dates and times.

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In this example, the chosen date and time is may 2nd 2022 at 0 800 hours,

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then click the box in the fixed time column.

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Click the left margin of the row to highlight it as the selected action.

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Ensure that the name of the group box below changes from selected action.

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None to selected action. One

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next you will select the pipes to be flushed and the flushing points

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in the selected action, one group box click the pipes flushed tab,

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click pick pipe

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note that the cursor now has an f next to it

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indicating it is ready to pick the pipes to be flushed

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in the GEO plan. Pick the two pipes with the ID numbers ST 28368605 point

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ST 28368602.1

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and

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ST 28367601 point ST 28367703.1.

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Then

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in the flushing schedule or dialogue, click fill gaps

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and all the pipes that run between the two selected pipes highlight

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and become part of the pipe selection.

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You also have the option to click all three

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pipes individually including pipe ST 28368602 point ST 28367601.1.

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Now in the selected action group box, click the flushing points tab,

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click pick node,

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select hydrant ST 28367703.

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Before you can successfully run a flushing simulation,

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you need to close some neighboring pipes,

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click the closed tab and check the box next to include pipes

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and then click pick link

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in the GEO plan. Select ST 28368605 point ST 28367602.1.

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Note that the pipe's properties are automatically entered into the grid

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from the schedule tab actions group box, click add again to open the add

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action dialogue

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in the position group box. Toggle on after action one

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disable the option, copy flushing points and links to close from preceding action.

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Click. OK.

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The second row of the actions grid is now active

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in the name column type action two,

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adjust the date time to May 2nd 2022 at 08 30.

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Click the box in the fixed time column,

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make sure to click the left margin of the second row to highlight action two.

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Before you select additional pipes to flush

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from the selected action group box. Open the pipes flushed tab again,

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click pick pipe, then choose ST 28368605 point ST 28367602.1

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and ST 28368605 point ST 28367602.1

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as the pipes to flush

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and then click fill gaps.

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Then open the flushing points tab in pick hydrant T

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from the closed tab. Select pick link in pick pipe ST 28368605 point ST 28368602.1

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in the flushing scheduler. Click save

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note that in this example, nothing appears in the warnings and errors window

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in the selected action group box, click update.

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A grid appears listing details of the

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action one flushing action including velocity flush,

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volume and duration.

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Click start run

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once the run is complete in the model group window,

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right? Click flushing schedule and click open as in the shortcut menu

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in the select format dialog, click workbook and then OK,

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this opens a spreadsheet with details of each action in the flushing schedule.

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You can use the arrow buttons in the workbook

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window to review the details of each action,

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close the workbook window,

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double click flushing scheduler to open it

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in the selected action group box, click update

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the grid listing details of the flushing

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action including velocity flush volume and duration

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is updated to account for the hydraulic

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conditions obtained from the flushing simulation.

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This provides a more accurate representation of the flushing conditions.