snappyHexMesh tutorial for beginners- Flow past objects
HTML-код
- Опубликовано: 11 сен 2024
- Hello all!!!
In this tutorial, I briefly explained how to use snappyHexMeshing in OpenFOAM. I also briefly discussed how to make your models with FreeCAD (Free open-source software) for making your object file and export it to OpenFOAM for meshing.
This tutorial is mainly for beginners.
Screencast recorded in Ubuntu 16.04 with KAZAM.
I am thankful to OpenFOAM, FreeCAD, and MeshLab community.
![[Openfoam Tutorial 4] Simulating the flow around a Motorbike with SnappyHexMesh](http://i.ytimg.com/vi/1C4Av_yCfpw/mqdefault.jpg)
Well done - you really concentrated on the important steps. The video is quite usefull for my beginner-level.
Great tutorial! Hope to see your further simulations, keep uploading!
Make more please. Your clarity is amazing.
Very good tutorial. Thanks!
Great job. Nailed it.
That was very helpful, Thank you!
It is a very nice video. Thanks!
Hi. May I know, how do you create the files as shown in the video? I managed to install the OpenFOAM but seems like I can't find those files.
You can find those files in tutorial folder in openfoam installation directory, select the files according to our case
Thank you for your video. I tried but when I ran openfoam, the position of cylinder was different from in freecad. Do you know why?
Very useful, thanks
Thank you for the video, it is great. Do you know what could be wrong with my mesh? I am creating a mesh of a rectangular tank with a pipe. I get a mesh at the walls of the tank and at the walls of the pipe, but there is no internal mesh. Thanks!
It seems to be a issue with viewing in paraview if I am correct. You can try checking the mesh by using volume instead of surface.
The other issue may be with locationInMesh.. check that one as well
Please make a tutorial on using sHM with reactingParcelFilmFoam solver, thank you!
Hi. When I use the command surfaceFeatureExtract appaers the following error:
Reading surfaceFeatureExtractDict
--> FOAM FATAL ERROR: (openfoam-2012)
No surfaces specified/found for entry: cube.stl
From int main(int, char**)
in file surfaceFeatureExtract.C at line 305.
FOAM exiting
I am not sure where the error come from, since the name of the file is the same as the name in the triSurface folder.
Thank You! :D
I can't tick off the Binary Encoding in MeshLab. Why is that?
To answer my own question... It is possible to export ascii stl file directly from FreeCAD. If you go to Mesh Design wb > Meshes > Create mesh from shape... ; Export mesh to file > choose ascii stl format
Great video. Do you mind posting the files used somewhere so that I may try to see what is wrong with my setup? I keep on receiving this error from snappyHexMesh:
Reading refinement surfaces.
--> FOAM FATAL ERROR:
Not implemented
From function virtual Foam::Istream& Foam::ITstream::read(char*, std::streamsize)
in file db/IOstreams/Tstreams/ITstream.C at line 159.
FOAM aborting
#0 Foam::error::printStack(Foam::Ostream&) at ??:?
#1 Foam::error::abort() at ??:?
#2 Foam::ITstream::read(char*, long) at ??:?
#3 Foam::Istream& Foam::operator>>(Foam::Istream&, Foam::FixedList&) at ??:?
#4 Foam::refinementSurfaces::refinementSurfaces(Foam::searchableSurfaces const&, Foam::dictionary const&, int) at ??:?
#5 ? at ??:?
#6 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6"
#7 ? at ??:?
Aborted (core dumped)
What type of mesh is created by SnappyHexMesh? For example.. Polyhedral, tetrahedral etc?
How do I add inflation layers to this mesh, to account for reasonable y+
Hi! Can you show the result of the command checkMesh -allTopology -allGeometry?
Sir, thanks for your great tutorial. Could you please the files?
sir how to get these directry?
Please review your video before. Remove unnesesary super-mega detailed explanation. And focus on the important and necesary steps.
see some people need super mega explanation, not everyone is super easy with the basics.
😃 this is an Indian style of explanation; we need that detailed explanation who is in beginner lever.
eventhough I am not a real beginner, I still prefere detailed explanation instead of those fast result oriented vids. They won't help much