Water network modelling 1

[bnard]

Hi is there anyone who could advise me regarding the proper assigning of numbers of nodes in water network modelling? Is there a sequence to be followed or steps like a loop maybe in clockwise or counterclockwise? I am using epanet and watercaed software. Pls advise. . .thanks

 

[francesca]

There is no correct way. In WaterCAD you could even "number" the nodes with their physical location (e.g. 1st & Peachtree or "1450 3rd Ave").

As long as your system is logical and can be understood by others, you should be fine.

 

[stanier]

Suggest you number the nodes initially in steps of five 5, 10, 15 etc. then when you add in a node it can be in sequence. Associate the up stream or downstream pipe number with the node.

Geoffrey D Stone FIMechE C.Eng;FIEAust CP Eng

http://www.waterhammer.bigblog.com.au

 

[bnard]

Thanks guys for the info I was just wondering because the principles involved in watercad and epanet are of matrix type I guess similar to cholesky which as others told me needs to be labelled accordingly and closer to each other to minimize the bandwidth (dunno the exact name) I just forgot the principles behind it.

 

[fel3]

Both francesca and stainer offer good suggestions. I used stainer's method a lot when I started modeling (about 25 yrs ago).

With modern software you have more options as francesca noted. If you want shorter labels than "street x street" you could always number your nodes based on a map grid. For example…several of our clients have utility base mapping with a grid overlay. A typical grid might be 500 feet x 500 feet and be indexed something like A to M east-west and 1 to 25 north-south. Within grid square F10, you could label the nodes F10-05, F10-10, F10-15, and so on.