Model works in EPANET but not so well in WaterGEMS

Question

Hi Guys 
 Please assist, a user has sent me this for help and I am in transit and unable to assist for the next few hours. 
 WA corrected controls.ctl Western Aqueduct_As-Built Current Demands_Rev 5.1.zip 
 He has a model which he has saved from EPANET (.inp) and imported into WaterGEMS but id does not work as well in WaterGEMS (errors). 
 
 Please see the attached (model, control file and screen grabs) and advise further. 
 
 Thank you.

Sushma Choure · Accepted Answer

Hello Linda, 
 I meant to change names in only in controls and not in actual model of EPANET as that would change whole hydraulics. 
 I tested the results between two models in one model controls were defined with word TANK and in other controls in EPANET were defined with word NODE, and results in EPANET were same for tanks results. 
 About below user notifications of "unknown status value in control action ", you may ignore it as controls are successfully imported which can be confirmed in the controls window by comparing that with EPANET controls. There is always a difference in the way you define controls in EPANET and WaterGEMS, its just about that. 
 What are the limitations of importing/exporting EPANET files?

Sushma Choure · Answer

Hello Linda, 
 The user notifications shows that the control conditions are not imported correctly in WaterGEMS, which can be seen in below screenshot, so WaterGEMS assumes that condition elements are not defined for these controls, as condition elements are seen as none in controls. 
 
 There appears to be duplicate controls as well in the model. Let me dig into this further and get back to you.

Sushma Choure · Answer

Hello Linda, 
 While looking at sample models from EPANET I saw that for simple controls on tank in EPANET it is denoted as NODE 1 e.g. not TANK 1. So I replaced tank word with node in EPANET and then exported the file as .NET and then imported in WaterGEMS then controls are imported correctly. 
 
 After computing the model there are user notifications like junctions are disconnected as tanks become full. 
 In WaterGEMS whenever tank becomes empty or full the a built-in altitude valve will close the adjacent pipe. , making the network disconnected. 
 So you see those user notifications about junctions being disconnected and tanks becoming full. You would need to revise your controls so as tanks not become completely empty or completely full. Please see below technote for reference on this. 
 What happens when a tank becomes empty or full? (altitude valve)

Scott Kampa · Answer

Hello Linda, 
 There isn't an automated way of doing that. It may be possible fix many issues (depending on what they are) with features like global edits, updates using ModelBuilder, control sets, etc. What are the messages that you need cleaned up? 
 Keep in mind that some warning or informational messages may have little or no impact on the actual hydraulic calculation. 
 Regards, 
 Scott

Model works in EPANET but not so well in WaterGEMS

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