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Prioritizing when modeling

Hi

In the case that one is modeling a water-distribution system for say an island but is restricted by the amount of pipes that the license allows one to model. How does one then prioritize in order to decide which pipes to model and which not to model.

  • Hello Chisten,

    Note however that Skelebrator is included with a WaterGEMS license, so if you have WaterCAD and do not also have access to WaterGEMS, you would need to upgrade to WaterGEMS in order to have access to use Skelebrator, as mentioned in this article: How can I reduce the number of pipes in my model?

    If you do not have access to WaterGEMS, then you can still apply the principles of series pipe and parallel pipe merging manually. If pipes are in series of different diameters, you would have to consider equivalent diameter and if they are in parallel then headloss will come into picture.

    You can refer the Advanced Water Distribution and Management publication to look into the theory of series and parallel pipe merging. Visit the Bentley Education website here for details.


    Regards,

    Yashodhan Joshi

    Answer Verified By: Christen Crique 

  • I found out that i can not use skelebrator since i only have WaterCAD to work with and not Watergems. I would therefore like to know if there are good tutorials and or literature out there that explain how to simplify the model without the use of skelebrator. And which ones (tutorials / literature) do you guys recommend.

  • Yes, the check on the number of pipes is only done when you compute the model and is tracked at the currently open model. So, you can certainly have multiple models each of which has less than 2000 pipes. However, you may not be able to separate the models without impacting the hydraulics, as a hydraulic change in one part of the model can potentially impact the hydraulics on the other side. Are these separate sections disconnected, or does water flow between them? (in which case you would need to approximate the hydraulics at the connection points such as with the method described here).

    I would consider Tom's point about the cost of upgrading to a higher pipe limit versus the much higher cost of a typical project. If you're interested in upgrading, you can contact sales here, or let us know and we can put you in touch with your Bentley sales representative.

    I believe the academic license for WaterCAD is 2000 pipes - you are not using an academic license, right?


    Regards,

    Jesse Dringoli
    Technical Support Manager, OpenFlows
    Bentley Communities Site Administrator
    Bentley Systems, Inc.

    Answer Verified By: Christen Crique 

  • I would assume that it's possible since n you stated that the license check is only done on compute.

  • Hello Jesse I have another question lets say I have a WaterCAD licence that allows me to model up to 2000 pipes. Could I create multiple models of different sections of the water distribution system and simulate the sections separately or am I limited to only one model with a limit of 2000 pipes?