Hi,
I have a water distribution network containing various demand nodes and FCVs u/s of the demand nodes.
I want to formulate the control condition such that the FCV should close if the total volume of water reaches some set value.
Is there any way to do this?
Hello Chetan,
FCV's control flow on a set discharge value by inducing a headloss through it to balance the flow to the set value. See the below article for more details on the use of an FCV or a TCV (Throttle Control Valve)
What is the difference between a Throttle Control Valve (TCV) and a Flow Control Valve (FCV)?
Can you elaborate on how you want "volume" to be controlled at a node? Is the node connecting to a tank?
Regards,
Yashodhan Joshi
Thanks for the reply Yashodhan.
I have substituted the d/s node to the FCV as reservoir now.
Can we establish some condition at FCV or at the d/s pipe of the FCV connecting to the reservoir such that the after x volume of water is passed through the pipe, it will get closed?
Basically I want to do this for scheduling the valves in intermittent supply system.
The easiest way is to use the downstream demand and the flow rate through the FCV to estimate the length of time it will take to deliver the water (T=V/Q). Then you would use time based controls. This won't be perfectly accurate but it should be good enough for most work.
Related article: Using "Clock Time" and "Time From Start" Controls