CSVTU_T1.zip
please provide the solution ASAP.
The system is disconnected because of tank, when the tank becomes empty or full, the adjacent pipe closes and it disconnects the model elements from tank.
In your case you need some source of water which will supply water to the tank, as there is no source of water to the tank and hence tank is empty so demands are not supplied.
What happens when a tank becomes empty or full? (altitude valve)
If you don't know the exact source of water, then you can model the limited source as negative demand, it is explained in detail below please go through it.
Modeling Fixed Inflow from a Marginal Source
Regards,
Sushma Choure
Bentley Technical Suppport