I think the diagram of the Vertex order at 2:30 is wrong. I sketched it out from *blockMeshDict* of Lily's template and it looks exactly as the diagram shown in this tutorial . Which is different than the diagram shown at 2:30. www.wolfdynamics.com/wiki/meshing_OF_blockmesh.pdf
Hello Thank you for the video. There is valuable information but i have an issue into my terminal when i run surfaceFeatureExtract into preGeo. This says: bash: surfaceFeatureExtract: command not found. why is this error? Thank you for the information that you can give me!
From static bool Foam::entry::New(Foam::dictionary&, Foam::Istream&, Foam::entry::inputMode, int) in file db/dictionary/entry/entryIO.C at line 166. I got this error
Thanks a lot! Just a couple of issues in preGeo folder files. 1) constant\triSurface\cylinder.STL > cylinder.stl 2) 0\omega - add closing bracket at line 49.
Hi, I come to the point of surfaceFeaturExtract and I receive the following message in the terminal: --> FOAM FATAL ERROR: (openfoam-2012) No surfaces specified/found for entry: cylinder.stl From int main(int, char**) in file surfaceFeatureExtract.C at line 305. FOAM exiting Any idea what happens and how I could run it?
Hi, may I know how did you created the PreGeo folder? I am creating a 3d geometry of a square. However, I couldn't do the simulation in OpenFoam. Can you guide and teach me on that? Really need your help
Hi Lily, Thanks for the great tutorial! This helps a lot with figuring out how to set up my own case. One question though, opening paraview I see the mesh block but no cylinder. Looking through the other comments having this issue, I've changed to wireframe, unchecked skip 0, tried adding -overwrite to snappyHexMesh, but I'm still having no luck. Any ideas? Thanks! Edit: Figured it out, if anyone is having these issues make sure when you export your .stl that it exports in meters (same page as where you change to ASCII).
Hello, I am getting this error. Could you please help me. Reading surfaceFeatureExtractDict --> FOAM FATAL ERROR: (openfoam-2012) No surfaces specified/found for entry: cylinder.stl From int main(int, char**) in file surfaceFeatureExtract.C at line 305. I'm stuck here :( . I even checked whether the cylinder file is in ascii format or binary. I saved it again in ascii format, but it still gives me the same error. Could you please let me know what to do.
Thank you for the tutorial! I've a question about running surfacemeshextract. When i try to run this code, i got an error says: surfaceFeatureExtract surfaceFeatureExtract: symbol lookup error: surfaceFeatureExtract: undefined symbol: _ZN4Foam9UOPstream5writeERKNS_5tokenE I've been searching for a solution for the problem but i've got nothing, do you have any idea what this is about?
@Killian Whyte Sir, I did as you said. I got: keyword surfaces is undefined in dictionary file: C:/Users/admin/Desktop/motorBike/system/surfaceFeaturesDict/motorBike.obj from line 20 to line 41. From function const Foam::entry& Foam::dictionary::lookupEntry(const Foam::word&, bool, bool) const in file db/dictionary/dictionary.C at line 799.
Hi I need help please, i want to simulate a vertical axis wind turbine that uses Magnus effect, basically rotating cylinders, how hard it is to adapt this tutorial to test the VAWT in openfoam. All I have so far is an assembly of the top section without the generator. Looking forward to your advice. Tim
I assume you ran blockMesh which is why you can see it on paraview. But did you also run snappyHexMesh before paraview too? If you did and that's not the issue, then it could be that you are viewing the block as a surface and your geometry is inside so you can't see it. Try changing the surface view to wireframe as in the video. Hope this helps.
@@kingl5519 In fact I had ran snappyHexMesh and turn the view to wireframe. I'm also sure that the cube point coordinates had adjusted to cover my geometry completely. That's confusing.
Hi Lily, After simpleFoam I got such error: No MRF models present No finite volume options present Starting time loop streamLine streamlines: --> FOAM FATAL IO ERROR: keyword direction is undefined in dictionary "/home/marcin/OpenFOAM/marcin-7/run/PreGeo/system/controlDict.functions.streamlines" file: /home/marcin/OpenFOAM/marcin-7/run/PreGeo/system/controlDict.functions.streamlines from line 13 to line 20. From function const Foam::entry& Foam::dictionary::lookupEntry(const Foam::word&, bool, bool) const in file db/dictionary/dictionary.C at line 570. Do you know how to solve it? Thanks in advance.
Hello and thank you for this tutorial. I have an error message coming up, while trying to execute surfaceFeatureExtract which is looking like this: Create time Note: Feature line extraction only valid on closed manifold surfaces Reading surfaceFeatureExtractDict --> FOAM FATAL ERROR: No surfaces specified/found for entry: cylinder.STL From function int main(int, char**) in file surfaceFeatureExtract.C at line 307. FOAM exiting Do you have any idea how to solve this issue, please?
@@ungedrageset I have. The reason this command did not worked in my case was that i used OpenFOAM from openfoam.org at this time. And this variant did not had this command in its command folders. After downloading from openfoam.com, it worked. I know it sounds stupid, but in my case this was the solution.
thank you, the cylinder works fine! I've tried to change the cylinder with my stl but I got some problems: my stl is a naca64 split in half simetrically but the simplefoam seems to compute the pressure only in the left half, so when I compute lateral thrust and drag with Paraview I get unconsistent results. Why this happens? Can you help me?
