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darwin designer optimization

  

darewin designer is giving different dia for same flow of pipe.

  • Hello Abhshek, 

    Usually the best approach is to initially size the pipes by estimating the peak flow over the life of the pipe and a reasonable maximum velocity (e.g. 2 m/s) and solve A = Q/V. That will get you a good initial estimate. Then, run a large number of scenarios based on different future demand growth assumptions and emergency situations to see how these sizes will work.

    In case of Darwin Designer, you need to create different design groups of pipes to be designed, ideally you should group those pipes together who might have similar diameters and similar flows, like branch pipes in one group, trunk pipes in one group likewise. I believe you might have included pipes P-465, 466, 467, 468 into different design groups or you have created separate design group for each pipe, which is not recommended, can you please confirm if that is the case? 

    Using Darwin Designer to design pipes in WaterGEMS 

    Regards,

    Sushma Choure

    Bentley Technical Suppport

  • thankyou for answer.

    yes i have created separate design group for each pipe because i was not able to decide the design group for pipe and which pipe i have to take in which design group.

  • You can initially assign diameters to all pipes in model, compute the model, you could create design groups based on velocity categories, first create selection set of pipes and then assign those selection sets to different groups for design, it is one way of creating pipe groups. Else as mentioned above assign trunk mains into one group, branch pipes into one likewise, you need to have at least 2 groups for design. 

    Regards,

    Sushma Choure

    Bentley Technical Suppport