Boundary Conditions

Boundary Conditions

• atmospheric discharge
• air chamber
• air valve
• inline check valve
• dead end
• discharge tank
• draw off
• downstream reservoir
• pressure regulating valve
• pressure relief valve
• pump station
• sprinklers
• stand pipe
• surge tank
• head breaking tanks
• turbine
• upstream reservoir
• downstream valve
• inline valve

The Windows environment is ideal for quickly drawing the pipe network and boundary conditions. A pipeline can literally be drawn in minutes. The network may be a simple pipeline with multiple pipes or a complex looped distribution network.

Hytran can attempt a steady state analysis before a transient run and then save the results as the start conditions prior to a transient analysis.

Hytran carries out extensive hysraulic checks to ensure the start conditions are consistent. A run-in time may be used to smooth out minor transients caused by inconsisitency in the input data. A special benefit of the real time trasnient display is that suspect transients can be spotted immedialtely in the form of erratic and sudden appearances of spikes.
 

Main Window for Drawing & Editing Click here to enlarge view

Drawing the network (Metric or English Units)

• Pipeline drawn with mouse
• 20 Boundary Conditions (BC's) pumps, valves etc.
• No limit on the number of pipes, nodes or BC's
• Pipe nodes may be snapped together
• Drag and drop BC's to nodes
• Dummy Pipe to connect existing BC to create a new one, e.g., air valve + dummy pipe + check valve
• Comprehensive pump options (fail, start, shut, & run)
• Rapid input to pipe data
• Input data dialogs at a click
• Visual indicator to show input data is required
• Network can be drawn on an elevation or plan view (looped distribution network)
• Zooming facilities
• Re-number nodes & pipes
• Valve database provided for head loss coefficients
• Pipe database provided pipe materials
• Import EPANET Network Data (*.inp file) and steady state results (*.rpt file)
• Extensive online help
• Software video Tutorial and Help
• Free bonus software HyPlot which may be copied and redistributed to clients for re-playing the transients

Editing the network

• Simple graphical editing of pipeline
• Edit the pipeline and BC's at any time
• Cut/copy & paste BC's to different nodes
• Delete pipes and nodes
• Try different BC's without having to edit external files
• Extensive network checks to minimize errors

Running the transients
Hytran carries out extensive network and hydraulic checks to minimize and run time errors or false transients.

Transient Window for viewing real time transients Click here to enlarge view

• Real time display of the instantaneous transients along pipe profile
• View transients at different location in the pipeline network
• Flow direction in pipes showing influence on transients
• Sub atmospheric pressure indicator
• Column separation indicator when cavitation occurs
• Extensive output plots and text listing
• View transient plots anywhere at a mouse click