Cyclic Boundary Condition in FreeCAD CfdOF
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Cyclic Boundary Condition in FreeCAD CfdOF
Is it possible to model a blade sector of an axial fan in CfdOF simulation? I have created a model of axial fan installed in a wind-tunnel and would like to take advantage of modeling a blade sector (periodic BC) in order to reduce the computational time. I would like to know if it’s possible, if so what’s the proper approach. Thanks in advance
Re: Cyclic Boundary Condition in FreeCAD CfdOF
@ oliveroxtoby
I posted this thread few weeks ago but no reply yet. Do you know if it’s possible to model a blade segment of an axial fan in CFDoF? If so, what are my options. Appreciate your time and effort.
I posted this thread few weeks ago but no reply yet. Do you know if it’s possible to model a blade segment of an axial fan in CFDoF? If so, what are my options. Appreciate your time and effort.
Re: Cyclic Boundary Condition in FreeCAD CfdOF
You can add this boundary condition manually to the solver files: https://www.openfoam.com/documentation/ ... yclic.html
Re: Cyclic Boundary Condition in FreeCAD CfdOF
I have assigned ”p1” and “p2” as a pair for cyclic surfaces. Should I add P1 as coupled patchname in mesh boundary and p2 as patchname in the field files? This is the first time I am using BC manually. Could you explain more, please. ThanksNewJoker wrote: ↑Mon Apr 10, 2023 6:21 pm You can add this boundary condition manually to the solver files: https://www.openfoam.com/documentation/ ... yclic.html
Re: Cyclic Boundary Condition in FreeCAD CfdOF
@NewJokerNewJoker wrote: ↑Mon Apr 10, 2023 6:21 pm You can add this boundary condition manually to the solver files: https://www.openfoam.com/documentation/ ... yclic.html
Per your recommendation, I added cyclic BC's manually to the solver as shown below and got an error message. Please help.
Code: Select all
fan
type rotatingWallVelocity;
origin (0. 0. 0.);
axis (0. 0. 1.);
omega 430;
//
P1
{
type cyclic;
}
P2
{
type cyclic;
}
//
//
*********************************************************
// Mesh Boundary File
P2
{
type cyclic;
neighbourPatch P1;
transform rotational;
}
//
P1
{
type cyclic;
neighbourPatch P2;
transform rotational;
}
Re: Cyclic Boundary Condition in FreeCAD CfdOF
“OpenFOAM IO error: inconsistent patch and patchField types for file: O/U.boundaryField.p1 at line 45. Simulation exited with error”
Re: Cyclic Boundary Condition in FreeCAD CfdOF
Simplified version of my case is attached.
- Attachments
-
- Cyclic.FCStd
- (27.7 KiB) Downloaded 49 times