INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Jobs

Stuck in setting emitter coefficients of EPANET

Stuck in setting emitter coefficients of EPANET

(OP)
Hi, guys. I am using epanet to simulating the water leakage recently. To express the different extend of leakage, the emitter coefficients need to be set from 0-0.3 lps at the step of 0.002 lps, and then monitor the pressure variations in each node. But it is a big work to change emitter coeff. every time manually. I am curious that is there any ways to adjust this parameter automatically? like any the commands in 'controls'?

Thank you very much :)

RE: Stuck in setting emitter coefficients of EPANET

I would put a pattern on a demand, true while the flow may not adjust according to changes in pressure, you will see the changes in pressure due to the change in flow

Hydrae

RE: Stuck in setting emitter coefficients of EPANET

(OP)
Thank you, you are right. But I think you've misunderstand my purpose. My aim is to monitor the variation of pressure according to the change of emitter coefficient. Anyway, thanks for you advice, if you know the way of how to change emitter coefficient automatically, I will be very grateful :)

RE: Stuck in setting emitter coefficients of EPANET

OK you really do want what you asked for: I was thinking maybe you could reverse the data, get all the data by stepping through a sequence of demands and build a lookup table from the data to get the info you want.

On a way to change emitter value, I agree the interface to change that parameter is cumbersome
the only easy way I can think of to change that globally is to setup editing in a text editor. The
input file is a text file that can be edited, you just gotta watch out for syntax and make sure your text editor does not convert it to different file type. Notepad works fine, wordpad also works but can convert the file to a '.doc' during a save.

Note: the use of emitters instead of demands it increases the work on the calculation engine so if you have a large model, calculation runs will take longer. But then again computers are so fast now you may not even notice.

Hydrae

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close