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  • Solução de problemas de pressões negativas em bombas, junções e outros elementos de nós

    Aplica-se a Produto(s): WaterGEMS, SewerCAD, HAMMER, WaterCAD Versão(ões): V8i, CONNECT Edition Área: Modelagem Autor Original: Dan Iannicelli , Mark Pachlhofer e Jesse Dringoli, Grupo de Suporte Técnico…

  • Pump max flow

    Hello, My pump designed flow rate is 3600 m3/h woth a max flow rate of 7200 m3/h . When needed in peak hours for my pump to give more flow cause the tank above is emptying, my pumo does not give more than 3600 m3/h. The pump type is constant speed…

  • Pump shut down after 1 hour in model EPS

    Dear, I have a problem with a pumping station, made up of 5 pumps running in parallel, where when I set the variable speed option with a fixed flow rate, the pumps turn off after 1 hour of running the model in EPS. Can you help me?

  • Merging Force Main Analysis

    I am currently analyzing a force main system wherein two force main networks merge at one point before discharging to an outfall. I'm currently thinking of the considerations and possible differences between simulation and actual scenario for this…

  • pump station start time

    Greetings , i’m using the explicit swmm solver and want to run a pump station but the operation will start after 2 days from the start of the storm , can you please help ? Thank you

  • Simulating an existing water distribution system in waterGems and optimising it on the basis of Pattern variation.

    Hello everyone, I am trying to simulate an existing water distribution system into waterGEMS and later I wish to alter it's patterns of pumping, demand, etc.. in order to optimise it in terms of energy consumption. THE PHYSICAL NETWORK HAS BEEN CREATED…

  • PSV Settings and Reverse Flow through Pump

    First I have a PSV and I was wondering if someone could explain the difference in setting it to the max elevation of the tank and the minimum elevation of the tank and if the sets below were correct way of doing it. When I set it to the max elevation…

  • Modeling Two Connection Points_WaterCAD

    Hello All, I am working on a new WaterCAD model for a multifamily residential development. The internal water mains are tying into a 16" WM to the north and a 8" WM to the west. We have fire flow tests at both locations, but I read that modeling the…

  • Modeling a FM into a Gravity System for a Pump Station_WaterCAD

    Hello, I'm currently in the process of selecting a pump as part of a wastewater design system and had a question on how to model the reservoir at the end of the system. The pump pumps into a force main which eventually connects to a gravity system…

  • Modeling pump dicharge regardless of waterdemand

    I'm modelling an underpressure network with a pumping station including various pumps. The model is buildup and base demands are given to the network. The demands are based on the pupulation off 3 years ago. Actually in the reality the population has…

  • 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…

  • WaterCADD - Reservoir influence

    I just recently started using WaterCADD. I am trying to model a system that involves pumping water out of the bottom of groundwater wells and into a collection tank. In order to supply water to the pumps, I am using a Reservoir (set at 1' above the pump…

  • negative pressure - groundwell [ submersible pump - what is the problem ?? please help

    i dont know what is the problem of this system pump definition is good elevation of nodes is correct i increased the trials to 200 i added a imaginary tank but presuure is -16 000 kPa right at top of the well what is the problem ???

  • Fixed Pump flow for 12 hours

    hello everyone, I want to make the pumps flow at 24 Lps for 12 hours and the tank will provide the flow in the other 12 hours the problem I found in watergems that I couldn't fix the flow at 24Lps for 12 hours, the flow rises at 36Lps and that causes…

  • esquematizar una bomba sumergible sewergems

    estimados quisiera saber cuales serian los componentes para modelar 3 bombas sumergibles(solamente cámara húmeda) para aguas residuales que están en funcionamiento simultáneamente en el software SewerGEMS. gracias de antemano

  • Pumps pumping more water then defined in the pump definitions

    Good Morning, I have a really complicated situation, My model has two reservoir's and each reservoir have two pumps, Reservoir 1 designed to produces 4000 GPM (Combined two pumps) Reservoir 2 designed to produces 1850 GPM (Combined two pumps…

  • Surge study for sewage transmission line

    Hello i would like to study a surge effect in sewage transmission line consist from lefting station of 1 submarsible pump .. water will be pumped by the submarsble pump for 1.5 km to a manhole . how can i model that submarsable pump in water hammer…

  • Submersible pump with bottom inlet in OpenPlant

    How can I model a submersible plant with bottom inlet in openplant? The pump is vertical with contrablock.

  • How do i set up a known Pump and Hydropneumatic?

    on the model that im doing, I will have to add and use a pump and a hydfropneumatic that are already on site. But I get confused when I neeed to add the definition of the pump curve and the hydropneumatic data. For the pump i have a Pedrollo Cp670 with…

  • High Service Pump/Clearwell

    I am trying to create a model of a rural water distribution system fed from high service pumps at the water plant that pull water from the plant clearwell and pump into the distribution system/storage tanks. How is this high service pump/clearwell system…

  • Pump selection for a closed system

    Product(s): WaterCAD, WaterGEMS Version(s): 10.XX.XX.XX, 08.11.XX.XX Area: Modeling Problem When designing a closed system with only demands downstream (no storage), how can the program help me select a pump? The system head…

  • Changing transient solver accuracy and max trials

    Product(s): HAMMER Version(s): 10.XX.XX.XX, 08.11.02.31 and greater Area: Calculation Problem How can you change the Accuracy and Maximum Trials for the transient calculation engine? Transient results appear to be unstable…

  • Velocities in network for different pumps

    Hello I have made a model in Watergems with some pipes and junctions, a reservoir and pump after that. I wanted to select between two pumps. When I put each of the pumps in the system and run it, pressures in the junctions change but velocities of the…

  • Booster Pump Station Scenario Alternatives

    I am needing help deciding which alternative to change. I want to create a scenario where I add in a booster pump station within my system. I might try to add in an alternative to Active Topology. If I do this, will the inactive pumps stop the flow in…
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