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

Waves Keep dissappearing in flume -IHFOAM-

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

Like Tree1Likes
  • 1 Post By Phicau

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   March 5, 2016, 16:55
Default Waves Keep dissappearing in flume -IHFOAM-
  #1
New Member
 
Cagkan
Join Date: Aug 2015
Posts: 8
Rep Power: 10
cagkn is on a distinguished road
I'm making a school project about numerical model of wave flume in our lab.I'm using IHFoam which is installed on top of OpenFoam 2.4.0. It's pretty basic, waves are identical with 7cm of height with 0.9s period and depth is 0.5m. Wave flume has a perforated wall with 50% porosity which is 7m away and a blank wall after that which is 0.15m away from the perforated wall.

I took baseWaveFlume from IHFoam tutorial and add RAS turbulence model files from CR35_DamBreak tutorial because original waveFlume case was linear.

It works w/o any warnings or errors but after sim finished when you watch it with paraFoam, you easly see that waves are severly flattened at the middle of the flume and near 15 second mark water level nearly becomes standing still.

I couldn't find the problem if you can help me i would be very happy as 15th of April is my deadline. I'm adding my case file and i will be very happy to answer any question.

Thank you in advance
Attached Files
File Type: zip RasWaveFlume.zip (13.1 KB, 2 views)
cagkn is offline   Reply With Quote

Old   March 6, 2016, 01:30
Default
  #2
Senior Member
 
Pablo Higuera
Join Date: Jan 2011
Location: Auckland
Posts: 627
Rep Power: 19
Phicau is on a distinguished road
Hi Cagkan,

several errors here:

waves generated with Cnoidal out of its application range, waves break close to generation and later again because of that and triggers turbulence buildup (check nut).

Best,

Pablo
cagkn likes this.

Last edited by Phicau; March 6, 2016 at 03:31.
Phicau is offline   Reply With Quote

Old   March 6, 2016, 05:26
Default
  #3
New Member
 
Cagkan
Join Date: Aug 2015
Posts: 8
Rep Power: 10
cagkn is on a distinguished road
Hi Pablo,

I don't have a nut file where should I check for errors? What are the cnoidal wave app. ranges?

Sorry I'm very new to all of this
cagkn is offline   Reply With Quote

Old   March 8, 2016, 14:37
Default
  #4
New Member
 
Cagkan
Join Date: Aug 2015
Posts: 8
Rep Power: 10
cagkn is on a distinguished road
problem remains the same can anybody please explain and help me with it?

Thank you
cagkn is offline   Reply With Quote

Reply

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
Outlet boundary condition for wave flume with interFoam solver Arnoldinho OpenFOAM 9 July 10, 2018 06:15
gravitational waves and capillary waves astroam COMSOL 0 August 15, 2015 17:49
gravitational waves and capillary waves astroam COMSOL 0 August 1, 2015 11:38
WAVES GENERATION IN A PORT OR BRAKE WAVES. important tecnicaf1 STAR-CCM+ 1 May 27, 2011 08:32
CFD Animations of waves, ships, and turbulence---- Douglas Dommermuth Main CFD Forum 23 January 8, 2008 13:41


All times are GMT -4. The time now is 01:28.