[vjp]

Hello everyone,

I would like to use a torus region with topoSet but I don't know how to do it.
I already used cylinderToCell, cylinderAnnulusToCell in topoSetDict to post-process some regions but I don't find a way to create a torus region or a volume of revolution around an axis.

Can anyone help me

Thanks in advance

[vjp]

I try to do what you explain (the surface specified with the STL file is not torus, it is a cylinder):

/*--------------------------------*- C++ -*----------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration | Website: https://openfoam.org
\\ / A nd | Version: 8
\\/ M anipulation |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class dictionary;
object topoSetDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

actions
(
{
name cylindre; // Name of the set
type cellSet; // Set type

action new; // Create a new set
source surfaceToCell; // Use cells as the source
sourceInfo
{
file "constant/triSurface/cylindre.stl";
useSurfaceOrientation false;
outsidePoints ((0 0.03 0));
includeCut true;
includeInside true;
includeOutside false;
nearDistance -1;
curvature -100;

}
}
{
name centre;
type cellZoneSet;
action new;
source setToCellZone;
sourceInfo
{
set cylindre;
}

}
);

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

I define my surface with the stl file "cylindre.stl" but when I run

topoSet | tee 2>&1 4-topoSet.log

I have always

cellSet cylindre now size 0
Created cellZoneSet centre
Applying source setToCellZone
Adding all cells from cellSet cylindre ...
cellZoneSet centre now size 0

It seems that there is nothing inside my surface but i don't understand why. The outsidePoint is outside the surface created.

[ohLi6oolee]

Originally Posted by vjp

I try to do what you explain (the surface specified with the STL file is not torus, it is a cylinder): geometry dash


I define my surface with the stl file "cylindre.stl" but when I run I have always
It seems that there is nothing inside my surface but i don't understand why. The outsidePoint is outside the surface created.

To create a torus region using topoSet in OpenFOAM (or similar software), you need to define a set of geometric parameters and use the relevant topoSet commands

[konkreta]

Originally Posted by ohLi6oolee

To create a torus region using topoSet in OpenFOAM (or similar software), you need to define a set of geometric parameters and use the relevant topoSet commands

Originally Posted by vjp

I try to do what you explain (the surface specified with the STL file is not torus, it is a cylinder): slope


I define my surface with the stl file "cylindre.stl" but when I run I have always
It seems that there is nothing inside my surface but i don't understand why. The outsidePoint is outside the surface created.

It seems like you're trying to use topoSet to define a surface using an STL file in OpenFOAM but are running into issues. Based on the message, it appears the issue might be with how the outsidePoint is specified. The point you're defining as outside should clearly be outside the geometry you're working with (in your case, a cylinder). If the STL is not being properly recognized or there's nothing inside the surface, it might be worth double-checking the integrity of the STL file or ensuring the surface normals are correctly oriented. Additionally, verify the positioning and accuracy of the outsidePoint relative.

[clarkehan]

Originally Posted by konkreta

It seems like you're trying to use topoSet to define a surface using an STL file in OpenFOAM but are running into issues. Based on the message, it appears the issue might be with how the outsidePoint is specified. The point you're defining as outside should clearly be outside the geometry you're working with (in your case, a cylinder). If the STL is not being properly recognized or there's nothing inside the surface, it might be worth double-checking the integrity of the STL file or ensuring the surface normals are correctly oriented. Additionally, verify the positioning and accuracy of the outsidePoint relative. Agario

Thanks for the detailed insights! I’ll make sure that the outsidePoint is correctly positioned outside the cylinder geometry. Additionally, I’ll verify the integrity of the STL file and ensure that all surface normals are properly oriented. If the STL isn’t being recognized correctly, I’ll use tools like surfaceCheck to identify any issues and possibly correct the normals with reverseSurfaceNormals. I’ll also double-check the placement and accuracy of the outsidePoint relative to the geometry. If I continue to encounter problems after these steps, I’ll provide more information for further assistance. Appreciate your help!

[salmawis]

Originally Posted by ohLi6oolee

To create a torus region using topoSet in OpenFOAM (or similar software),Drift Boss you need to define a set of geometric parameters and use the relevant topoSet commands

Appreciate your help!

[karina99]

Originally Posted by konkreta

red ball 4 It seems like you're trying to use topoSet to define a surface using an STL file in OpenFOAM but are running into issues. Based on the message, it appears the issue might be with how the outsidePoint is specified. The point you're defining as outside should clearly be outside the geometry you're working with (in your case, a cylinder). If the STL is not being properly recognized or there's nothing inside the surface, it might be worth double-checking the integrity of the STL file or ensuring the surface normals are correctly oriented. Additionally, verify the positioning and accuracy of the outsidePoint relative.

thanks bro