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derived constituent

Thu, 01/08/2004 - 5:48am — esn
hi i am working on nitrate &phosphate modeling for reservior.from water quality parameters i have only nitrate & phosphate. i want to know in "derived constituent" and "constituent fluxes" cards which item must be "ON" please guide me. B.R esn[addsig]
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Water Quality
Thu, 01/08/2004 - 7:19am — Tom

I am not certain that I understand what you are asking, but if you want to output concentrations of NO3 and PO4, then you need to turn to " ON" these variables in the "CST PRIN" card. These are state variables, not derived constituents. If you are asking something else, please rephrase the question so that I know exactly what you want.[addsig]