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  • How to Count Courant Number

    I make modelling OpenFlows 2D that have DT = 4, dx = 33 m, and Max Depth= 20.438 m. Why the courant number show up like this? what it must sum of CFL axis-x and CFL axis-y? Best Regard Thank You
  • Batch Merge Hydrants to Nearby Junctions in WaterCAD

    In WaterCAD, I imported a set of two shapefiles from GIS using ModelBuilder. The first shapefile was the general layout of a watermain with the pipe lengths and pipe diameters. For this model, I opted for modelbuilder to automatically create nodes. After…
  • WaterCAD UDF Flushing simulations velocity

    When running WaterCAD UDF Flushing simulations, when I isolate out a pipe section in the network, why do other pipes in the network still have flow even though there is theoretically no source?
  • Very high flow rates in a downstream pipe connecting two tanks.

    Hello , I am simulating a large area whose zones communicate through tanks. So i have 10 pipes connecting tanks. The problem i face is that the flow in these pipes cause of the altitude differences is very high, not corresponding to the demand of…
  • Hydraulic Analysis on Agriculture Irrigation System

    I have a short agricultural irrigation system (a main) that provides water to farmers. The head of the system is a canal with a structure that provides a constant head of water elevation during the season. There is no pump to deliver water to the customers…
  • Reverse Flow through a PRV-5

    I am having some trouble with model. At first, I was getting an unbalanced system. I did the walkthrough on how to check and fix an unbalanced system. We updated the controls, elevations, and pump curves. Right now the Model is getting three errors…
  • How to perform Demand Driven Analysis?

    Please Explain with Full Example.
  • How to perform gravity driven analysis in watergems?

    How to design a network based on gravity driven analysis. Basically pipe should be in partial flow.
  • ERROR: Instability in THOMAS3D - ModuleFunctions - ERR10

    Hello I'm trying to make coastal modelling and I'm used nested method by multiple to simulation this model, but while running the simulation there is error. It said that simulation is instability. Is the bathymetry too shallow or can it not be nested…
  • FATAL; INTERNAL; Verify_Numerical_Options - Hydrodynamic - ERR20..

    Hello, I've tried to set up modules hydrodynamic, but this message error come up while running simulation. Can you help me to fix this error?
  • WRITTEN_BY_PROPERTY_GRID : 0 or 1

    Hello, I'm just wondering what it is mean 'WRITTEN_BY_PROPERTY_GRID : 0 or 1' ?
  • forrtl: warning (528): IEEE_UNDERFLOW is signaling

    Hello, anybody know what it is mean 'forrtl: warning (528): IEEE_UNDERFLOW is signaling'?
  • Rainwater Harvesting

    We have several buildings which we are seeking to harvest rainwater to an earth dam for use. Basically we have several gutters and downpipes. The Downpipes will in turn be connected to collection pipes which eventually flow into the earth dam. The water…
  • Calibração de rugosidade

    É possível calibrar o coeficiente de rugosidade de um modelo hidráulico de uma rede de distribuição de água no período?
  • how to find wall thickness and class of Galvanised iron pipe?

    can i find wall thickness in watergems or i have to take the help of hammer. how to design the pipe for particular grade( like mserw grades (grade a or grade b or X42)) or class (like Gallvanised iron (light , medium and heavy class) in watergems…
  • How do I CONTROL fire flow available and pressure (calculated residual) in water gems????

    It seems as if the previous designer of this residential development was able to control the fire flow available (1000 gpm) in one scenario and then control the pressure calculated residual (20 psi) in another scenario. Does anyone know how to do this…
  • Target Model Data getting deleted while importing submodel in WaterGEMS

    Some of the Target Model Data (E.g. Pipes) getting deleted while importing submodel in WaterGEMS Connect Edition. Why? Could anybody help me out from this issue?
  • Modeling Standpipe and Elevated Storage Tank

    All, I am currently working on creating an existing system model that has both an elevated storage tank (750,000 GAL with 56.50' diameter) and a stand pipe (10,000 GAL with a 12' diameter). My model is running into an issue where the two tanks are not…
  • trex not updating elevtion of customer meter and isolation valve

    Iam using landxml file as dataset and X-Y unit are in meter and z unit is in meter as in land xml dataset but its showing error as shown below in image attached.
  • How can the WaterGEMS determine pipe diameter automatically based pressure and velocity constraint on optimization by Darwin designer but i'm not having costs of pipe?

    darwin designer is asking for cost of pipe.
  • Hydrant testing as a boundary condition

    I would like to know if we could use two independent fire hydrant test (not performed at the same time) results run at two nearby locations as boundary condition to run a fire flow analysis in water model?
  • Watercad nottification error

    How can i fix this nottification ? What it means? Its water supply system.
  • How to split crossing pipes in bulk?

    While building the model many pipes are crossing each other and I need to split them at the crossing point using junctions.
  • 1. How can there be a flow supply without any flow demand? Can anyone help pe learn about it?

  • Demand multiplier

    Hello everyone. Please can someone help me explain what a demand multiplier is? I want to use ESP but I'm stucked here. I really need to know what demand multiplier is. Thank you