[lome792e]

Hi everyone!
I'm using openFoam (lynux) to run a k eps (simpleFoam) case. I'm importing a file.stl from an external cad, to use snappyHexMesh. For this reason, I need to create a parallelepiped that contains the stl geometry, and I need to visualize it correctly.
At first I was trying to run blockMesh: it creates correctly the polyMesh folder, but it doesn't generate the foam file of the parallelepiped.
This is what blockMesh says in the terminal:

/*---------------------------------------------------------------------------*\

========= |

\\ / F ield | OpenFOAM: The Open Source CFD Toolbox

\\ / O peration | Website: https://openfoam.org

\\ / A nd | Version: 10

\\/ M anipulation |

\*---------------------------------------------------------------------------*/

Build : 10-c4cf895ad8fa

Exec : blockMesh

Date : Apr 11 2023

Time : 11:30:29

Host : "lome-VirtualBox"

PID : 6382

I/O : uncollated

Case : /home/lome/OpenFOAM/lome-10/run/Lab_CFD/simulazioni_2023/Prova02023

nProcs : 1

sigFpe : Enabling floating point exception trapping (FOAM_SIGFPE).

fileModificationChecking : Monitoring run-time modified files using timeStampMaster (fileModificationSkew 10)

allowSystemOperations : Allowing user-supplied system call operations



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

Create time



Reading "blockMeshDict"



Creating block mesh from

"system/blockMeshDict"

Creating block edges

No non-planar block faces defined

Creating topology blocks

Creating topology patches



Creating block mesh topology



Check topology



Basic statistics

Number of internal faces : 0

Number of boundary faces : 6

Number of defined boundary faces : 6

Number of undefined boundary faces : 0

Checking patch -> block consistency



Creating block offsets

Creating merge list .



Creating polyMesh from blockMesh

Creating patches

Creating cells

Creating points with scale 1

Block 0 cell size :

i : 0.009

j : 0.007

k : 0.01



There are no merge patch pairs edges



Writing polyMesh

----------------

Mesh Information

----------------

boundingBox: (-0.55 -0.07 0) (0.35 0.07 0.01)

nPoints: 4242

nCells: 2000

nFaces: 8120

nInternalFaces: 3880

----------------

Patches

----------------

patch 0 (start: 3880 size: 20) name: inlet

patch 1 (start: 3900 size: 20) name: outlet

patch 2 (start: 3920 size: 100) name: top

patch 3 (start: 4020 size: 100) name: bottom

patch 4 (start: 4120 size: 2000) name: spnw_rigth

patch 5 (start: 6120 size: 2000) name: spnw_left



End

so apparently it generates correctly the box, but it does not create a foam file. I tried also to use a tutorial case ( for example, pitzDaily), but still it does not create the foam file when I run blockMesh.
I found this discussion : http://www.cfd-online.com/Forums/ope...tml#post234151 - post #10 ; it does not help much.
Thank you for your help!!

Lorenzo

I

[AtoHM]

The <whatever>.foam file is just an empty file. AFAIK no utility creates it. You can just copy it from whatever tutorial/case you already have or create it yourself with the touch command in linux.