Rotating Wall Velocity Error of a Fan

[hooshsim]

Hi, all

I am trying to simulate a rotating fan installed in a box. The model file is setup correctly and a mesh is generated without any error. I have also updated the "U" file in the "0" directory to include the fan speed as outlined below. Once I submit the model for the solution, I get an error as shown in the attached sfile.

Can someone please take a look at my model and tell me what the issue could be here. My model is very similar to this tutorial on Youtube. https://youtu.be/Q10MbSFEiEM

Thanks

Code: Select all

/*--------------------------------*- C++ -*----------------------------------*\
|                                                                             |
|                Generated by the CfdOF workbench for FreeCAD                 |
|                  https://gitlab.com/opensimproject/CfdOF                    |
|                                                                             |
\*---------------------------------------------------------------------------*/
FoamFile
{
    version     2.0;
    format      ascii;
    class       volVectorField;
    object      U;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

dimensions      [0 1 -1 0 0 0 0];

internalField   uniform (0.0 0.0 0.0);

boundaryField
{

    inlet
    {
        type            flowRateInletVelocity;
        massFlowRate    1.0;
        rho             rho;
        rhoInlet        1.2;
        value           $internalField;
    }

    outlet
    {
        type        pressureInletOutletVelocity;
        value       $internalField;
    }

    wall
    {
        // movingWallVelocity reduces to fixedValue if the mesh is not moving
        type        movingWallVelocity;
        value       uniform (0 0 0);
    }

    fan
    {
        // Specified velocity, only component tangential to wall is used
	type	rotatingwallvelocity;		
	origin	(0. 0. 0.);
     	axis  	(0. 0. -1.);
     	omega	constant 430;
    }

    defaultFaces
    {
        type        slip;
        value       $internalField;
    }

}

// ************************************************************************* //

[NewJoker]

This question should be placed in the FEM —> CfdOF subforum.

Which lines are the ones to which the error refers ?

[chrisb]

/*--------------------------------*- C++ -*----------------------------------*\
| |
| Generated by the CfdOF workbench for FreeCAD |
| https://gitlab.com/opensimproject/CfdOF |
| |
\*---------------------------------------------------------------------------*/

Please edit your post and put the code in code tags using the button </>. That makes the post easier to read and shows immediately the indentations.

[hooshsim]

This question should be placed in the FEM —> CfdOF subforum.

Which lines are the ones to which the error refers ?

Error refers to the lines below patch name "Fan"

[NewJoker]

Error refers to the lines below patch name "Fan"

Try changing it to this:

Code: Select all

type	rotatingwallvelocity;		
	origin	(0. 0. 0.);
     	axis  	(0. 0. -1.);
     	omega	430;

[hooshsim]

Error refers to the lines below patch name "Fan"

Try changing it to this:

Code: Select all

type	rotatingwallvelocity;		
	origin	(0. 0. 0.);
     	axis  	(0. 0. -1.);
     	omega	430;

I tried that first...same error but, at different line under the same patch name.
Trying to attach the file but it's too big. How do I reduce the file size for posting? Appreciate your help.

[NewJoker]

Trying to attach the file but it's too big. How do I reduce the file size for posting? Appreciate your help.

You could use some hosting website like WeTransfer, Drobpox or Google Drive and paste the link here.

[hooshsim]

Here is the link to the model file.

https://drive.google.com/file/d/1351og6 ... sp=sharing

[hooshsim]

Trying to attach the file but it's too big. How do I reduce the file size for posting? Appreciate your help.

You could use some hosting website like WeTransfer, Drobpox or Google Drive and paste the link here.

NewJ,

Does the link work out for you? First timer on Google Drive

Thanks

[NewJoker]

Does the link work out for you? First timer on Google Drive

You would also have to set access to "Anyone with the link".