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Inflow Type Issue: "CONCENTRATION" vs "MASS"

Posted by Tobi Reid on March 13, 2012 at 2:44pm in Water Quality

I am trying to set a baseline level of a pollutant.  This only appears to work when the  inflow type "MASS" is selected.  Inputting a value when inflow type "CONCEN" is selected, nothing registers on the resulting time series plot, as shown in the example below:

 

Graph when "MASS" is selected as the inflow type:

Graph when "CONCEN" is selected as the inflow type:

I would like to be able to work with Concentration, not Mass.  What am I doing wrong?

 

Thanks to whoever can help.

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Tags: time, series, plot, pollutant, type
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Replies

  • Robert Dickinson March 13, 2012 at 5:16pm

    It works for me with baseline flow and concentration

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  • Tobi Reid March 13, 2012 at 4:52pm

    Thanks for your help, Robert.  However, I am not using any time series for this node.  I am trying to establish an output of water containing a constant concentration of pollutant from the junction in question.  It seems to be working with Mass, but not with Concentration.

     

    Robert Dickinson said:

    Hi,

    This example works with Concentration - I am only loading the one node at the lower right corner for TSS, using a time series for flow and a time series for concentration

  • Robert Dickinson March 13, 2012 at 3:17pm

    Hi,

    This example works with Concentration - I am only loading the one node at the lower right corner for TSS, using a time series for flow and a time series for concentration

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