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

Grid-induced turbulence using pisoFoam

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   February 23, 2017, 11:03
Default Grid-induced turbulence using pisoFoam
  #1
New Member
 
Xander Walsh
Join Date: Jan 2012
Posts: 3
Rep Power: 12
CliftonReed is on a distinguished road
Dear All,

I am performing a model-scale LES to replicate wind tunnel results. The simulation uses the Xie-Castro mass-corrected turbulence inlet and has several refinement boxes.

The issue is that there seems to be a generation of turbulence when the cell size changes. I have witnessed this before in OpenFOAM in cases where there has been no inlet turbulence.

Also note that the mesh was generated using HEXPRESS/hybrid.

Can anyone provide some insight or a solution to this problem?

Thanks.
Attached Images
File Type: png 1.PNG (71.6 KB, 11 views)
File Type: png 2.PNG (78.5 KB, 9 views)
CliftonReed is offline   Reply With Quote

Reply

Tags
les, mesh, mesh-induced turbulence;, turbulence

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
On grid independent solution for pulsatile flow David FLUENT 5 March 25, 2022 03:33
Displaying Turbulence Intensity in LES and creating a constant Turbulence Intensity Anwer FLUENT 1 August 8, 2016 16:59
Dynamic Mesh resulting in Curved Grid Lines adubois FLUENT 3 April 17, 2014 10:06
pisoFoam elbow case with turbulence inf.vish OpenFOAM Running, Solving & CFD 0 August 19, 2013 05:17
MapFields to New Grid For Extreme Grid Deformations due to Body Motion albcem OpenFOAM 0 May 5, 2009 14:17


All times are GMT -4. The time now is 20:08.