• Problem setting up default graph for pumps

    Hi All, I am trying to set up a default graph for pumps in SewerGems 10. I would like to show the pump flow vs. the design flow and the pump head vs the design head. The problem is every time I try to use the new default settings SewerGems adds "IdahoPumpDefinitionData…
  • relative speed factor not being calculated in watergems 2.2.0 for fixed flow variable speed pump

    Hello, I'm having trouble with fixed flow pumps in hammer update 4: Relative speed factor not calculated and causing 'pump cannot deliver...' error Pump is in fact delivering, but calculated speed is 0 Seems to only be happening with watergems…
  • What do i need to transform a reservoir model into a tank model??

    Hello, I´m looking for a tutorial, tip´s and protips to upgrade my model into a EPS, changing the reservoir´s for tank´s, use controls for the pump´s and detect critical headloss gradient. Thanks!!
  • PROBLEM WITH SCADAconnect SIMULATOR

    Hi everyone and thank you very much for your time!!! I have a question about the scadaconnect simulator . (we run watergems connect edition update 2) I have a water supply network that has 3 reservoirs, and 3 boreholes (active). While I pass the files…
  • Pump Set to Off But is Adding Energy to the System

    This is in WaterCAD CONNECT Edition. My question stems from an issue with a tank in my model keeps overflowing during EPS run (fills up, remains full, doesn't drain). I believe I have identified the hydraulic grade is being supplied by a certain pump…
  • Tanks Emptying and Won't Refill

    Hello, I have a water model where two of my tanks that 'float' on the distribution system (both have same base and overflow elevations) that will gradually empty in my EPS scenario. Neither has a separate inlet. There is a 3rd tank some distance away…
  • Pump Head & Flow WaterGems

    I need technical assistance for the attached cooling water model KSP-Cooling Water System.wtg Process Brief: The cold water from the elevated tank (actually a cooling tower) is pumped (fixed speed pump) through heat exchanger (chiller) and back to…
  • Head curve for Vertical Turbine Pump

    HI, I'm trying to enter the pump-head characterisitics for a vertical turbine pump. It should look like this: But whenever I enter the head data as Multiple point, the curve doesn't look like what it should as if Hammer is fitting a new curve to…
  • Deep well

    Hello guys how to add deep well as a reservoir in water cad
  • Model Calibration

    I have started the process of calibrating my SewerGEMS model to match the measured data. The measured data I have is Pump Station flow rates (gal/day) and WWTP flow (gal/day). I have created graphs and profiles for these elements and export the graph…
  • inserimento air valve dopo evento transitorio arresto pompa (ho bisogno di aiuto)

    buongiorno, dopo tante domande siamo quasi arrivati alla fine del problema. Dopo aver calcolato un'analisi transitoria di arresto di una pompa con numero di giri variabile ho problemi relativi alla cavitazione e quindi ho inserito dove ho questi problemi…
  • evento transitorio spegnimento pompa velocità variabile

    buonasera, ho riscontrato due errori in questa simulazione: 1) problema cavitazione 2) analizzando i risultati dell'analisi ho notato che le portate (flow) delle tubazioni a valle della pompa spenta non tendono mai a 0 ho pensato: per risolvere…
  • How do I check that my pump design is correct and optimal (for pumping water to multiple overhead tanks)?

    Dear all, I have a situation where pipe network is laid upto 12 overhead tanks. Now I need to design pump to feed water to this network, so that daily demands at the tanks are met. So far, what I have tried is- defined a 1 design point pump with an…
  • SewerCAD Booster Pump - No Wet Well

    Is there a way to model a booster pump in SewerCAD without having to use a wet well? The model is currently setup with a wet well and I am not sure how this would affect high and low head conditions in the force main when in the field the booster pump…
  • Running 2 pumps in parallel

    Good Morning Everyone, I am a bit new to WaterCAD. I am trying to model 2 lift station pumps with different curves running parallel and joining together before tie in into a Force main. The model is attached. I am not sure how much data to input…
  • SewerGEMS Clonnect Edition: How to model a eastewater pumpiing system to calculate H2S concentration?

    Hi everyone I am going to calculate H2S concetration in a wastewater pump station using SewerGEMS Connect Edition. As I have learned it is just with the Explicit (SWMM Solvers) we can calculate concentration of H2S. Is it true? Problem is, when…
  • 3 Pump Cycling

    I have a Lift Station that has two force mains and 3 pumps coming out of it. The municipality cycles between each pump through out the day. Is there a way to set up controls to switch between these 3 pumps? I currently have the model set up to cycle between…
  • WaterCAD - Negative pressures due to Submersible Well Pump Not delivering enough head with storage tank at low elevation

    Hi All, In waterCAD, I am modeling submersible well pumps which will pump into a tank about 12,000+ ft away. The wells are located at a higher elevation compared to the storage tank. My main question is on how to model accordingly to have no negative…
  • How to attach an existing junction on an existing pipe line?

    I am working on a model in which many of the junctions are not on the existing pipeline. So, I want to attach the existing junction(which is not attached to the pipeline) to the existing pipeline by not creating a new junction on the pipeline and splitting…
  • Extreme negative pressures and hydraulic grades

    Hello, I have imported a model into WaterGEMS and entered as much info as I have from the client. When I run the model, I am getting some very extreme negative pressures and hydraulic grades. The areas of the model in question are at high points in…
  • No Flow From The Tank

    Hello, My model is currently no delivering flow. I am unsure if it is the tank causing the issue, or the effluent pump? (Lower right hand corner of the model). I have tried numerous things to fix the issue but nothing seems to be working. My file…
  • WaterCADD- best way to model a Positive Displacement Pump

    What is the best way to model a system comprised of positive displacement pumps? In particular, I have ~100 groundwater wells that contain bladder pumps (they each are supplied 100 PSI). I've tried making a pump curve off of the literature provided by…
  • WaterCADD - Global Pump Definition Assignments

    Is there a way to assign a pump definition to multiple pumps at once? I have about 150 pumps in my model, and I don't really want to click each one and then select the pump definition from the drop-down list. I would love to be able to just click a few…
  • Behavior of pump in the case of Valve closure is not clear

    I am modelling a system, and one of the scenarios is an emergency shutdown of the flow control valve (FCV) downstream of the pump as shown in the following image: the FCV is modelled as a throttle control valve (TCV) with the properties of the original…
  • Potable Water Distribution Design for communities - use of PRV's

    Hi all, I have a general question on the use of PRV's at individual services for a "closed" distribution system, i.e. pumps directly draw from a treated reservoir and feed to end-users with no elevated/pressure tank and storage elsewhere. I have come…