|
[Sponsors] |
August 4, 2015, 20:52 |
A strange Problem with my OpenFoam animation
|
#1 |
Member
Mike
Join Date: Apr 2011
Location: Canada
Posts: 83
Rep Power: 15 |
Hi there,
I am new to OpenFoam and just started working with that. I have conducted a test on a 2D cylinder at Re=100 (laminar), just to make sure that the basics of my openfoam simulation are OK. The simulation went well and I also made an animation for the flow evolution which can be downloaded from here: https://www.dropbox.com/s/zqnvxg7hbt...-SLOW.avi?dl=0 and here is with the vectors superimposed: https://www.dropbox.com/s/e3mvvvxnm0...ector.avi?dl=0 There is some thing that puzzles me a bit. Although it is quite obvious from the contour structures and topology that the flow is from left to right, in the animation it seems that those high U contours are begin convected from the outflow boundary to the cylinder. It is not a visual mistake as I refined the time step and got the same result. I suspect there might be some more subtleties related to OpenFoam. I checked whatever I knew but could not find the problem. If I ran the animation in the reverse order then it looks quite nice! if you look at the flow development, from time=0 to the first couple of snapshots, it shows that the flow is developing correctly and I think that is an indication that the zone order is right. But suddenly we see that reverse behavior around time=1. I'd appreciate your help. |
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Extrusion with OpenFoam problem No. Iterations 0 | Lord Kelvin | OpenFOAM Running, Solving & CFD | 8 | March 28, 2016 11:08 |
strange problem with data | seav | OpenFOAM Running, Solving & CFD | 0 | April 11, 2014 05:01 |
Problem in fvMesh.C when using topological changes. OpenFoam 2-2-x | Horacio Aguerre | OpenFOAM Programming & Development | 0 | August 14, 2013 11:57 |
OpenFOAM 1.7.1 installation problem on Fedora 14 | armonica | OpenFOAM Installation | 16 | March 31, 2011 13:16 |
Anyone met this strange problem? | Lee | Siemens | 1 | June 7, 2005 03:15 |