Hellowhen I modeling transient event , in some points the maximum transient pressure is the same as steady state , what is the meaning of this?is there something wrong
Hello Adnan,
For the parts of the profile where the max transient head is equal to the initial conditions head, it means that the HGL during the transient simulation never went above the initial conditions HGL. This could be due to a number of different reasons, either "real", or due to some problem. Since the minimum pressure seems to be equal to the vapor pressure limit for most of the profile, most likely you are modeling a transient event that results in a "downsurge" wave throughout the profile in question and the pressure never rises back up for most of the network before the end of the simulation. The parts of the profile on the right side may experience vapor pocket collapse, causing an "upsurge" wave from the water columns colliding, resulting in the pressure rising up, above the initial pressure.
See more in the video below.
I would recommend animating the profile using the green play button at the top, to better visualize what is happening here. If this does not help, please compress the .WTG and .SQLITE files into a zip file and upload using one of the methods below:
Sharing Hydraulic Model Files on the Haestad Forum
Regards,
Jesse DringoliTechnical Support Manager, OpenFlowsBentley Communities Site AdministratorBentley Systems, Inc.
Answer Verified By: Adnan Draweel
System A-B ( After Modeling TRANS.) TIme ste LAST GG.wtg.zip