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

SimpleFOAM and MRF

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   June 15, 2016, 02:39
Default SimpleFOAM and MRF
  #1
Member
 
carno
Join Date: Mar 2009
Posts: 70
Rep Power: 17
Carno is on a distinguished road
Hi All,

I am simulating a axial fan in SimpleFOAM. The solution is converged but the results are totally strange. I have noticed two problems.

1. The flow is happening in opposite direction the fan is pushing
2. The pressure and velocity magnitudes are very high.

I have posted some pictures to give you an idea.

The mechCheck is ok. I am using total pressure inlet and static pressure outet. The domain is simple, a cylinder with fan inside it.

I suspect is fvSchemes issue.

BTW, how to submit <code> in the forum?

Code:

FoamFile
{
version 2.0;
class dictionary;
format ascii;
location "system";
object fvSchemes;
}
ddtSchemes
{
default steadyState;
}
gradSchemes
{
default Gauss linear;
}
divSchemes
{
default bounded Gauss upwind;
div(phi,U) bounded Gauss upwind;
div(phi,omega) bounded Gauss upwind;
div(phi,k) bounded Gauss upwind;
div(R) Gauss linear;
div((nuEff*dev(T(grad(U))))) Gauss linear;
}
laplacianSchemes
{
default Gauss linear corrected;
}
interpolationSchemes
{
default linear;
}
snGradSchemes
{
default corrected;
}
fluxRequired
{
default no;
p ;
}
Attached Images
File Type: jpg Pressure.jpg (40.7 KB, 52 views)
File Type: jpg Pressure_rotor.jpg (61.5 KB, 54 views)
File Type: jpg Vmag.jpg (57.5 KB, 61 views)
File Type: jpg Vel_rotor.jpg (53.0 KB, 47 views)
Carno is offline   Reply With Quote

Reply

Tags
mrf, simplefoam convergence


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
strange behaviour in the "interface" between two reference frames (simpleFoam MRF) cvillescas OpenFOAM Running, Solving & CFD 17 July 27, 2021 10:05
SRFSimpleFoam vs SimpleFoam (MRF) oscar_urri OpenFOAM Running, Solving & CFD 9 November 13, 2018 17:18
having trouble using simpleFoam and moving reference frame (MRF) joyw OpenFOAM 5 June 24, 2018 15:23
Simulation of Radial Fan with simpleFoam MRF nash OpenFOAM Running, Solving & CFD 2 November 5, 2015 10:12
simpleFoam MRF validation mpl OpenFOAM Running, Solving & CFD 1 August 19, 2014 12:17


All times are GMT -4. The time now is 13:27.