Dear All,
I want to model a Pump Rising Main pipe which is discharge in sea via diffusers. Also I need to check the Hammer Forces acting in the submerged pipe segment. For information, this Pumping station is in operation for last 6 month, but due to breakdown at submerged pipe joint, it is gone under maintenance and client want to see that whether it is happens because to Hammer forces or by some other reason.
Can all of you please advise on this concern and suggest me how to build the model.
Thanks & Regards
Hello Jusvinder,
You can model the diffusers either as emitter coefficients, or reservoirs set to the water surface elevation first in WaterGEMS / WaterCAD if you have, then you can perform transient force calculations in Hammer. You should look after minor losses in this case to make sure they are considered.
Here are some diffusers related discussions that you should find helpful.
Modeling a wastewater effluent diffuser
Also here is information about calculating transient forces in Hammer.
Transient Force Calculations in HAMMER
Regards,
Sushma Choure
Bentley Technical Suppport
Hello Sushma,
Thanks for reply...I have run the transient simulation based on this and results are ok.
Hello Again,
Although Result are fine, but when I checked Transient Forces on Junction point, X-force shows 0 force (horizontal line), what does it mean? can you please suggest me.
Best Regards
Jusvinder Singh
Force calculations are based on the X and Y coordinates, as well as elevation for the Z coordinate. If you have a pipe that doesn't have a change in the X coordinate (in other words, is straight up and down in the drawing), there may be little force in the X direction.
More information on force calculations can be found here: Transient Force Calculations.
If that doesn't help, we would likely need to see a copy of the model files.
Scott