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

Channel flow with symmetry Plane not symmetric

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   May 19, 2017, 22:32
Default Channel flow with symmetry Plane not symmetric
  #1
Member
 
Hilbert
Join Date: Aug 2015
Location: Australia
Posts: 50
Rep Power: 10
Hillie is on a distinguished road
Dear Foamers,

For some LES simulations I am trying to generate an inflow condition by means of running a half channel with a symmetry condition.

I am running PimpleFoam for the runs. in the direction were there is no symmetry condition the flow profile looks good. I attached a plot of Umean.

In the direction of the symmetry plane the results are a bit weird. The maximum flow velocity is not on the symmetry plane as one would expect but off center. I attached an other plot of the distribution.

The channel is reasonably small, 7x4x70 mm. On the forum I found that playing with the number of correctors in the pimple settings could help. Everything I tried did nothing to the velocity distribution though.

My current settings:
Code:
 nOuterCorrectors 1;
    nCorrectors     7;
    nNonOrthogonalCorrectors 0;
    pRefPoint       (0 0 0);
    pRefValue       0;
Does anybody have any pointers on what to do about it?

Cheers
Attached Files
File Type: pdf VelocityDistribution.pdf (125.6 KB, 15 views)
File Type: pdf VelocityDistributionwalltowall.pdf (107.5 KB, 10 views)
Hillie is offline   Reply With Quote

Reply


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
Issues on the simulation of high-speed compressible flow within turbomachinery dowlee OpenFOAM Running, Solving & CFD 11 August 6, 2021 06:40
Possible Bug in pimpleFoam (or createPatch) (or fluent3DMeshToFoam) cfdonline2mohsen OpenFOAM 3 October 21, 2013 09:28
[ICEM] Flow channel meshing problems StefanG ANSYS Meshing & Geometry 19 May 15, 2012 06:44
Poor Residuals at Intersection Between Symmetry Plane and Airfoil Leading Edge TWaung CFX 2 February 16, 2010 08:11
ICEM and symmetry plane Roland CFX 3 September 13, 2006 08:38


All times are GMT -4. The time now is 22:33.