Bentley HAMMER CONNECT Edition Help

Flushing Results Browser

The flushing results browser contains the results of a flushing run listed by event. It is assumed that the flushing events were conducted in the order in which they are listed. The content of the browser corresponds to the current scenario. If it is not a flushing output scenario, no events would be displayed.

The display in the flushing browser corresponds to the current scenario which needs to be a flushing output scenario. The scenario can be switched to the flushing browser in the main drawing or by picking the button "Make Output Scenario Current" next to the output scenario selection in the right pane of the flushing manager.

Before opening the browser it is helpful to set up color coding and annotation that will highlight the flushing events. Usually color coding pipes by velocity or shear stress and junctions and hydrants by demand will be the most useful. For example, pipes with a velocity over 4 ft/s (1.2 m/s) might be red with thickness three times that of other pipes.

Toolbar buttons at the top of the browser enable the user to:

  • Zoom - zooms to extent of flushing event
  • Highlight - highlights elements in flushing event. In highlighting, the pipe run color will override element symbology color coding
  • Reset - cancels out the selected event and displays results for representative scenario
  • Report - opens preview of flushing browser report
  • Help - opens flushing help

The columns listed in the browser include:

  • Label - the event label
  • Flushing Type - conventional or UDF
  • Pipe Length Met Target - length of pipe in flushing area that met both velocity and shear stress target during event
  • Cumulative Pipe Length Met Target - sum of length of pipe in flushing area that met target of all events up to current event
  • Incremental Pipe Length Met Target - difference between cumulative length for this event and previous event. If pipe length that me target is large but incremental length is small, event may be duplicating effects of other prior events
  • Minimum Pressure Node - node with lowest pressure in the flushing area or nodes of interest
  • Minimum Pressure - pressure at node in previous column
  • Travel Time (Pipe Run) - minimum flush volume divided by hydrant flow
  • Volume (Minimum, Pipe Run) - volume of water in pipe run that must be flushed (0 if no run specified)
  • Flow (Pipe Run) - flow in the pipe run that must be flushed

When an event is highlighted, the property grid and flex tables will contain values corresponding to that event. If elements are not associated with the event, they will have NA in many fields.

To view flushing by pipes instead of by event, use the Flushing Area Report (Flex Table).