Hi,
The SETPOINT and CONCEN soureTypes are quite bugged in the latest version of WaterGEMS and CAD (10.04.00.108).
So far I had been able to function with workarounds to the bugs but now I've encountered a point I can't figure out a workaround for. I have a model setup that models Chlorine Bulk and Wall decay as well as THM formation. Within the network I need to simulate removal of the THM's at a certain location in the network.
I should be able to use CONCE to do this but unfortunately it completely ignores my CONCEN command line (i.e. if I have 0.2mg/L THM's coming into a node and I set that node to CONCEN 0.1, I should see 0.1mg/L coming out of that node but there is no change to the concentration from that node)
To quote the MSX Manual: "A CONCEN type source sets the concentration of the species in any external source infow (i.e., a negative demand) entering the node. The external infow must be established as part of the hydraulic specification of the network model."
A brief summary of the bugs I've found woth the [SOURCES] code so far and workarounds for simulating Chlorine dosing and boosting:
I have a test model I created to test MSX code and impact of tank mixing on chlorine/chloramine decay, it's a bit of a mess but should be understandable. I've uploaded this using the secure file upload to save you time replicating these bugs.Please let me know if you can find a means to reduce THM concentration.
Thank for providing the model. We are looking into this and will be in touch when we have more information.
Regards,
Scott