Hello,
How does Hammer treat an active PDD alternative in a transient simulation? Is PDD only for WaterGEMS EPS or is it also applicable to Hammer for transient analyses?
Regards,
Youssef
Hello Youssef,
PDD alternative is considered for calculations in initial conditions of Hammer. So you can use the same model set up with PDD function in Hammer to perform transient analysis. Basically PDD or demands will be considered for calculating initial conditions which will eventually provide pressures and HGLs to perform the transient analysis.
Here is information about preparing your model for transient analysis, for your reference.
Preparing an existing model for a transient analysis in HAMMER
Sushma Choure
Bentley Technical Suppport
Hi Sushma,
Excellent, this clarifies a lot. So I am guessing this is the reason why there is no transient results output for PDD demand shortfall during the transient simulation, correct? Since it's only for initial conditions?
Youssef,, the demand shortfall due to transients is usually negligible. If you want to study demand shortfalls, you really should be in WaterGEMS > Criticality.
Hi Tom,
Got it, thank you so much for clarifying!