Hi everyone. I have a small question, i have one reservoir to a pump to a tank and then to the hydraulic network.I also have some data from scada regarding the tank level.Moreover, I think the characteristics of the pump are the right ones.What could I change (beyond the demand, its is not change a lot!) so that the tank leve is the same as scada tank level?Should I make someone pattern to work slower? if so, roughly, how would it be? Or is it something else?Below are some screenshots from the watergems and a pdf with pump informations, is set right?E10S64-3D.pdfThank you all in advance.
Hello,
This may be a calibration exercise. I would recommend taking a look at this wiki article: Water Model Calibration Tips. It is possible that calibrating the model will help the model results line up better with the SCADA data. If you have WaterGEMS, you can use Darwin Calibrator to help with this.
Regards,
Scott
Calibrating pumps and tanks in an EPS model depends on the source of error. You need to proceed logically.
Usually, the easiest thing to check is the pump curve. Measure the flow and pump head over a range of conditions (try throttling the discharge vale to change flow). If the operating points you measure don't match the model pump curve, adjust the pump curve in the model.
If the pump curve is good, check the tank levels corresponding to pump on/off. If the pump is turning on/off in the model at a different tank level, adjust your control set points.
If the slope of the tank level graph when the pump is off is less than the model predicts, then the model demands may be too high and should be adjusted.
If the slopes are different only at certain times of the day, then the demand patterns may need adjustment.
If the tank level curves are good (slopes and range) except that the on/off times don't exactly match, don't worry too much about it. It's very difficult to match on/off times because no two days are exactly the same.
Okay!! Thnaks a lot!That help, i think i manage it, i change the hydraulic patterns and the pump definition and everything go smoothier! One more, how can i see the total flow out from the tank or for all the hydraulic network (for example i know that the total flow for my network is 5.500 m^3 between 24 hours, how i can see the total flow for 24 hours)?
The easiest way is to pick Analysis > Summary which will give you inflow, outflow and change in storage overall and by time step.
If you want totalized from through any pipe, pick Analysis > More > Totalizing Flow Meter > New and select the pipes which will report the totalized flow. Of course, this only works for EPS runs.