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CONSULTING		  
      
HYTRAN

      Waterhammer
      and Surge Analysis in Pipe Systems


      

        

          
            
Solves water hammer and surge
            transients in pumped and pipe flow systems

            Advanced graphical display aids understanding of waterhammer
            phenomenon and effect of control devices

            Simple graphical entry of pipe and boundary condition details

          		
        

      


      
The goal in developing Hytran, apart from being an accurate analytical tool,
      was to produce software that is simple to use and able to impart
      a better understanding of the water hammer phenomenon. Seeing
      real time transient graphics flashing across the display screen
      takes away much of the mystery that seems to surround this topic.

      

      

        

          
            
Sneak Preview…click
            here
            for a quick look at Hytran's advanced graphical display of transient
            behaviour. The simulation is of a rising main with a single pump
            delivering to a reservoir. The transients which occur on pump
            failure are displayed. Note the following as you run the simulation:


            
    
              
  • Instantaneous
              pressure variation with time along the pipeline is plotted.
              
  • Pressure variation
              with time at three fixed locations is shown in the insert Window
              (the locations are identified by coloured vertical lines on the
              pipe, eg the blue line at the pump).
              
  • Flow direction
              is indicated by the red and blue arrows in the pipe.
              
  • Column separation
              is identified by black dots in the pipe at the upstream high
              point.
            


            
You will need
            an appropriate viewer loaded onto your computer to run this AVI
            file, eg RealPlayer.
          

        

      


      
Using Hytran
      is a simple 3-step process...


      
1. BUILD THE
      PIPE SYSTEM


      
    
        
  • Simply click and drag the pipe
        into position using the auto-scaling feature - 
    
        then adjust pipe lengths and elevations to correct values.    
        
  • Mouse driven drag-and-drop
        
  • 16 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.
        
  • Comprehensive pump options:
        fail, start, shut, & run.
        
  • Input data dialogs at a click.
        
  • Visual indicator to show input
        data is required.
        
  • Network can be drawn on an elevation
        or plan view.
        
  • Zooming facilities.
        
  • Simple graphical editing of
        pipeline, cut & paste BC's.
        
  • Edit the pipeline and BC's at
        any time.
        
  • Delete pipes and nodes.
        
  • Try different BC's without having
        to edit external files.
        
  • Extensive network checks to
        minimise errors.
      


      
2. SET THE
      BOUNDARY CONDITIONS



      Hytran will model the following 16 Boundary Conditions and Control
      Devices:

         
        

          
            
    
              
  • Air chamber
              
  • Air valve
              
  • Atmospheric
              discharge
              
  • Check valve
              
  • Dead end
              
  • Discharge tank
              
  • Downstram reservoirs
              
  • Downstream valve
            

          		
          
            
    
              
  • Draw off
              
  • Inline valve
              
  • Pressure regulating
              valve
              
  • Pressure relief
              valve
              
  • Pump
              
  • Surge tank
              
  • Turbine
              
  • Upstream reservoir
            

          		
        

      


      
3. RUN THE
      TRANSIENTS


      
You can actually
      see the instantaneous transient HGL as the pressure transients
      travel the pipeline. Transients at user-defined at fixed points
      along the pipeline can also be displayed in real time.The Sneak Preview
      illustrates this, but for more a more information click
      here.


      
Hytran allows:


      
    
        
  • Real time display of the instantaneous
        transients along pipe profile.
        
  • View transients at any location
        in the pipeline network.
        
  • Flow direction in pipes showing
        influence on transients.
        
  • Column separation indictor when
        cavitation occurs.
        
  • Extensive output listing.
        
  • Print transients plots directly
        or customise graphs via spreadsheet.
      


      
For more information click
      here.


      

        

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