CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > OpenFOAM > OpenFOAM Running, Solving & CFD

ncrement of water level with “variableHeightFlowRate and variableHeightFlowRateInletV

Register Blogs Members List Search Today's Posts Mark Forums Read

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   October 26, 2021, 03:11
Default ncrement of water level with “variableHeightFlowRate and variableHeightFlowRateInletV
  #1
New Member
 
Edgar Camilo Virgüez Muñoz
Join Date: Jul 2021
Posts: 1
Rep Power: 0
echamilo is on a distinguished road
Hi everyone, and I hope that you are fine.

Firstly, I am relative beginner in CFD topics, specially in OpenFOAM, and I would like make known a problem that I have with modelling a channel and lateral weir using InterFOAM.

he problem that I have is a increment of shape water in the side of principal channel (see figures attached in the post), this phenomena is produced from the first moments of run model . Some characteristics of model are:
  • Water level height constant, equal to 90cm.
  • Flow rate constant, keeping same water level.
  • Parallel simulation with three processors.

Additionally, some solutions and/or possibles causes that I considered in this problems are:
  • Change interpolation scheme of “interfaceCompression vanLeer 1” to “upwind”, where this phenomena still occurs. (solution)
  • I considered that solution is the interpolation scheme of phi, alpha (or all interpolations schemes). (cause)
  • In consideration that variableFlowRAteInletVelocity estimated an average velocity on the bounday condition as scalar avgU = -flowRate/gSum(patch().magSf()*alphap); then I’ve considered reduce flow rate for prevent possibles increments in the water level. (solution)

I really appreciate your opinions and suggestions, thanks .
Attached Images
File Type: jpg fig1.jpg (32.9 KB, 23 views)
File Type: jpg fig2.jpg (35.4 KB, 22 views)
File Type: jpg fig3.jpg (35.5 KB, 23 views)
echamilo is offline   Reply With Quote

Reply

Tags
boundary condition, inlet, variableheightflowrate, water level

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Water level drop at outlet InterFoam solver IngmarScholte OpenFOAM Running, Solving & CFD 1 December 17, 2020 14:35
Constant water level BC, spillway, open channel Mathia1510 OpenFOAM Pre-Processing 0 March 1, 2020 15:40
No liquid water exist in my Fuel Cell simulation fatchang FLUENT 19 October 15, 2018 15:27
Water level fall in Vof svenki7 ANSYS 2 February 24, 2015 23:57
[snappyHexMesh] AMI-interface "cuts" water jet jrrygg OpenFOAM Meshing & Mesh Conversion 0 February 15, 2013 08:08


All times are GMT -4. The time now is 06:47.