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Nishadi

Nishadi

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  • RE: Additional flow to the network

    Scott Kampa
    Scott Kampa
    Hello Nishadi, You have a very high continuity error being reported. This can be an indication of instability in the results. Part of this may be because there is no inflow. Low flows or zero flows can be difficult for the solver to find a good solution…
    • over 1 year ago
    • OpenFlows | Water Infrastructure
    • OpenFlows | Water Infrastructure Forum
  • RE: Run off estimation in SewerGEMS plat form

    Sushma Choure
    Sushma Choure
    Hello Nishadi, You will need to select unit hydrograph method as runoff method in SewerGEMS, which will allow you to define SCS curve number, see below. Which solver are you using? You can find more information in the help documentation. File>Help>SewerGEMS…
    • over 1 year ago
    • OpenFlows | Water Infrastructure
    • OpenFlows | Water Infrastructure Forum
  • RE: Run off estimation in SewerGEMS plat form

    Jesse Dringoli
    Jesse Dringoli
    A few other points to add to Sushma's response: The Runoff Methods that you can select from depends on the active numerical solver that you have selected. For example if you are using the GVF-Rational solver, you will only be able to use the Rational…
    • over 1 year ago
    • OpenFlows | Water Infrastructure
    • OpenFlows | Water Infrastructure Forum
  • RE: Selecting appropriate constituent source type

    Yashodhan Joshi
    Yashodhan Joshi
    Hello Nishadi, Nishadi said: I need to maintain 3 PPM concentration at tank outlet point A and B. Is this 3 PPM "each" at A and B? or in total? Usually, 'Set Point Booster" is used at tanks to maintain a constant concentration at the outlet. Can…
    • over 1 year ago
    • OpenFlows | Water Infrastructure
    • OpenFlows | Water Infrastructure Forum
  • RE: Constituent Analysis in Pump operating Network

    Sushma Choure
    Sushma Choure
    If out of 8 pumps, say 2 pumps turn on and off at same time then you can use composite action in controls like composite conditions. IF Clock time >= 8:00 PM THEN PU2 status = ON and PU1 status = ON Using Controls, Conditions, Actions and Control…
    • over 1 year ago
    • OpenFlows | Water Infrastructure
    • OpenFlows | Water Infrastructure Forum
  • RE: Constituent Analysis in Pump operating Network

    Sushma Choure
    Sushma Choure
    Hello Nishadi, clock time based controls example are as below, this is explained in below wiki's, please go through it. IF Clock time >= 12:00 AM AND Clock Time < 1:00 AM THEN Pump status = ON IF Clock time >= 1:00 AM AND Clock Time < 8:00 PM THEN…
    • over 1 year ago
    • OpenFlows | Water Infrastructure
    • OpenFlows | Water Infrastructure Forum
  • RE: Error message in Constituent Analysis

    Sushma Choure
    Sushma Choure
    Hello Nishadi, We tried to reproduce the issue, however no such error is seen in child scenario for EPS run and constituent. Could you please elaborate what changes did you make in child scenario? Disconnected demand nodes will happen for closed valves…
    • over 1 year ago
    • OpenFlows | Water Infrastructure
    • OpenFlows | Water Infrastructure Forum
  • RE: Message in transient analysis

    Jesse Dringoli
    Jesse Dringoli
    Just to add to Yashodhan and Sushma's responses - a regular tank element is also treated as a surge tank during the transient simulation and can overflow if the water level exceeds the top elevation of the tank. As mentioned in prior replies, check …
    • over 1 year ago
    • OpenFlows | Water Infrastructure
    • OpenFlows | Water Infrastructure Forum
  • RE: Message in transient analysis

    Yashodhan Joshi
    Yashodhan Joshi
    Hello Nishadi, Yes. If you have set the surge tank type to "circular" or "variable area", overflow rate is considered. This will show the overflow above the top of the tank. If the section type is "variable area" this is simply the total inflow into…
    • over 1 year ago
    • OpenFlows | Water Infrastructure
    • OpenFlows | Water Infrastructure Forum
  • RE: Message in transient analysis

    Sushma Choure
    Sushma Choure
    From your screenshot it appears that it is a normal tank that you are using and not a surge tank. If your tank is too small like small diameter or even if the difference between initial and maximum elevations / levels is minimal then this notification…
    • over 1 year ago
    • OpenFlows | Water Infrastructure
    • OpenFlows | Water Infrastructure Forum
  • RE: Assigning a minimum flow requirement to tanks

    Sushma Choure
    Sushma Choure
    Hello Nishadi, You should try to replicate what is there on field, if there is overhead tank on field then you should model it as tank element. Tank acts as a hydraulic boundary where as junction is normal element, when there is storage like tank downstream…
    • over 1 year ago
    • OpenFlows | Water Infrastructure
    • OpenFlows | Water Infrastructure Forum
  • RE: Pump sizing for transmission line with elevated towers

    Sushma Choure
    Sushma Choure
    Here is reference for creating pressure zones in your model if required as suggested Dr. Walski, Using the Pressure Zone Manager Modeling District Metered Areas (DMAs) Negative flow means flow is going in reverse direction that what is defined as…
    • over 1 year ago
    • OpenFlows | Water Infrastructure
    • OpenFlows | Water Infrastructure Forum
  • RE: Pump sizing for transmission line with elevated towers

    Tom Walski
    Tom Walski
    1. You would use a peak period steady run to size pipes and pumps. You would use an EPS run to determine how to operate the system, in particular looking for period of high or low pressure. 2. Where and how are you think you are getting " minus inflow…
    • over 1 year ago
    • OpenFlows | Water Infrastructure
    • OpenFlows | Water Infrastructure Forum
  • RE: Convert Channel section to Conduit in SewerGEMS

    Yashodhan Joshi
    Yashodhan Joshi
    Hello Nishadi, You can morph pressure pipes to conduits but not channels. However, you can use ModelBuilder to make these changes. See the below article which can guide you in this; Morphing conduits into pressure pipes You can keep the cross=section…
    • over 4 years ago
    • OpenFlows | Water Infrastructure
    • OpenFlows | Water Infrastructure Forum
  • RE: Convert Channel section to Conduit in SewerGEMS

    Jesse Dringoli
    Jesse Dringoli
    Just to add one point of clarification - Conduits model the cross sectional area in the conduit link itself, whereas channels define their cross sectional area at the cross section node end-points. So, it is not possible to have cross sections in series…
    • over 4 years ago
    • OpenFlows | Water Infrastructure
    • OpenFlows | Water Infrastructure Forum
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