|
[Sponsors] |
October 15, 2013, 09:55 |
Problem 45deg Inflow and Outflow
|
#1 |
Senior Member
Join Date: Dec 2010
Posts: 135
Rep Power: 15 |
Hi guys
I want to investigate a flow over a cylinder with an velocitsy inflow angle of 45 degrees. Therfore I created the computational domain in the attachement. My inflow patch is the on the side in x-direction, outflow patch in following to that on the opposite. Top and Bottom of the domain are set to cyclic patches. Forget about the streamlines in the picture. The do make no sense. Last edited by eRzBeNgEl; October 16, 2013 at 05:13. |
|
October 16, 2013, 04:38 |
|
#2 | |||
Senior Member
Join Date: Dec 2010
Posts: 135
Rep Power: 15 |
Ok I am sure I have to use periodic boundary conditions. Tried also to implement them but always getting following error:
Quote:
Quote:
Quote:
|
||||
October 16, 2013, 07:33 |
|
#3 |
Senior Member
Join Date: Dec 2010
Posts: 135
Rep Power: 15 |
no one can help me?
|
|
October 16, 2013, 12:49 |
|
#4 | |
Member
Jace
Join Date: Oct 2012
Posts: 77
Rep Power: 15 |
Quote:
patch1 { type cyclic; nFaces 100; startFace 1; matchTolerace 0.0001; neighbourPatch patch2; } patch2 { type cyclic; nFaces 100; startFace 101; matchTolerace 0.0001; neighbourPatch patch1; } If your cells in the top and bottom faces are way off, such that the matchTolerance parameter doesn't help, then you will have to use cyclicAMI instead of the cyclic boundary type. I know of it, but haven't used it myself, so can't help you with the details related to how to use cyclicAMI. However, I'm sure you can find some information on the forum by doing a quick search. Hope this helps! good luck! |
||
November 2, 2013, 06:16 |
|
#5 | |
Member
Yao Lu
Join Date: May 2013
Posts: 33
Rep Power: 12 |
Quote:
I'm solving a flow around cylinder case with interFoam. My geometry is just like yours. I'm wondering how to simulate outflow BC(just like outflow BC in fluent) in openfoam. I have tried freestream and freestreamPressure BC in U and p files. However, the drag coefficient doesn't match the values announced in papers. Do you have any ideas? thanks in advance. |
||
November 4, 2013, 08:42 |
|
#6 | |||
Senior Member
Join Date: Dec 2010
Posts: 135
Rep Power: 15 |
I want to refresh this topic:
Now I tried to use cyclicAMI This is what I did so far: Made faceSets: setSet faceSet AMI new patchToFace sym1 faceSet AMI add patchToFace sym2 quit setsToZones -noFlipMap boundary file: Quote:
I also adjusted the initial conditions U and p correctly: Quote:
Now I got following error : Quote:
I think I am almost there, the error is asking for intial target face. I thought I already defined this by faceSets at the beginning. |
||||
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
DSMC errors at inflow and outflow boundary | wenjie | OpenFOAM | 5 | February 20, 2013 23:27 |
suitable turbulent (kOmegaSST)BC for inflow and outflow. | immortality | OpenFOAM Running, Solving & CFD | 0 | January 6, 2013 03:03 |
outflow boundar condition problem, mutiphase flow | ziemowitzima | OpenFOAM Running, Solving & CFD | 1 | April 29, 2012 14:27 |
Correct location for inflow and outflow boundaries | Varun | CFX | 1 | May 23, 2008 03:43 |
Inflow without outflow! | ANASTASIOS GEORGOULAS | FLUENT | 3 | September 15, 2007 03:58 |