How can I determine the headloss through a hydropneumatic tank for a given timestep in HAMMER?
There is no report that shows the exact headloss through the tank. However, there is a relatively easy way to determine it.
** Gas vessel at node HT-2 **
Time Volume Head-Gas Head-Pipe Inflow
(s) (m3) (m) (m) (cms)
To determine the headloss, you basically look at the difference between the values for "Head-Pipe" and "Head-Gas". When the value for "Inflow" is positive, that means the tank is filling, so the head in the tank (Head-Gas) may be less than the head in the pipe (Head-Pipe) due to headlosses. When the "Inflow" is negative, that means the tank is draining, so the Head-Pipe may be less than the Head-Gas due to headlosses.
Modeling Reference - Hydropneumatic TanksDetermining the Headloss Coefficient for a hydropneumatic tank or surge tank