Dear Bentley Team,
I am having confusion in input parameters of Hydropneumatic Tank.
HGL Initial =
Liquid Volume =
Pressure (Gas-Preset) =
For example, consider a tank that has been given a full volume of 500 L and the initial conditions pressure head is 50 m. Assume that the pre-charge pressure is 5% of the steady state pipeline pressure. (This is a number that you would know ahead of time.) So, the gas preset pressure is set to 2.5 m (50 m times 5%). In this case, HAMMER computes the 'K' constant as (2.5 m + 10.33 m)(0.5 m3) = 6.415. Since K is known now, the initial gas volume for the transient simulation after the bladder is submitted to pipeline pressure is computed as V = K/P = (6.415)/(50 m+10.33 m) = 0.106 m3 = 106 L.
By keeping above example in mind I am assigning following parameter in my calculation.
Elevation = 200m (Tank Location) Steady state pressure 10 bars
HGL Initial = (200+100) =300
Liquid Volume (initial)= 200L (?)
Tank Volume = 500L (Assume)
Pressure (Gas-Preset) = 5m (5% of Steady State Pressure)
Please correct me if my calculation is wrong.
Regards,
SA
Hi Syed,
You have posted a query in the Communities Feedback Forum which is a space specific to feedback regarding Bentley Communities. I will be moving this post to the OpenFlows | Water Infrastructure Forum to get the support that it needs from our product experts.