Propeller CFD - OpenFoam Tutorial | snappyHexMesh Dynamic Meshing | pimpleFoam | Transient |

[@umamisoup3335]

The tutorial is clear and enjoyable, keep up the good work!

[@Codeynamics]

Thankyou very much

[@bumpty9830]

Don't forget about Tab completion when typing out those long file paths! My system even auto-completes the environment variable name, but I'm sure yours will at least autocomplete directory names (like incompressibleMultiphaseVoF). Saves a little time and wrist effort.

[@Codeynamics]

Thanks for your suggestions. I do use that. But it doesn't work when we use $FOAM_TUTORIALS in WSL. I have tried it and it adds a \ before $ everytime I hit tab. And once there is a \, it can no longer auto complete as it is neither a variable or a path. I'm glad it works for you. I hate it that it doesn't work for me in such cases.

[@opensourcemechanics]

Veey good video! Thanks for sharing!

[@Codeynamics]

Thankyou. Please share and support!

[@SamirPatnaik]

so clean tutorial bro, love it. every other one on this topic is unwatchable

[@Codeynamics]

Glad you think so! Thankyou.

[@imonghosh7286]

loved it, very well explained.

[@Codeynamics]

Thankyou, keep supporting

[@chriswiese1348]

Great Video!

[@Codeynamics]

Glad you enjoyed it

[@ahmadnabhani9290]

Thank you for the useful video. What is "Q" parameter here?

[@Codeynamics]

Thankyou The Q criterion defines vortices as areas where the vorticity magnitude is greater than the magnitude of the rate of strain. Pls check documentation for more clarity

[@POTATOMAN-gi9ce]

hey if you close wsl inbetween and reopen it later can you continue the steps?

[@Codeynamics]

yes absolutely. As long as you go to the correct case directory location and perform the appropriate commands, it will work.

[@raoufdz4474]

Thank you

[@Codeynamics]

Welcome 😊

[@disinlungkamei2869]

sir please can you tell me how did the blade rotate which file of the openfoam stores the information about this rotation .. i am ignorant on this ....and where can i download this model ...thank you sir

[@Codeynamics]

it is the dynamicMeshDict in the constant folder. This model is also available in the tutorial resources. Please follow the video. I have explained it as well.

[@silviasimi4394]

Hi, what about free libraries in OpenFOAM? Is it possibile that some users make available BlockMeshDict, SnappyHexMeshDict and others file, but without stl/obj file? I can’t find the subdirectory constant/Trisurface. In the constant folder, I have RASProperties, transportProperties and turbolenceProperties. Thanks!

[@Codeynamics]

To use blockMesh you don't need an object, but for snappyHexMesh, you would need an stl or an obj file. The constant folder never comes with the triSurface folder. You have to manually create it and add your geometry inside that and mesh it using the snappyHexMesh. I hope this helps. Please check my video on meshing a plane using snappyHexMesh. It would clarify your question.

[@ap-qn9hw]

Hi, is it possible to have the final foam file ? I am working in vizualisation rather than in calculation. Thanks for the vid. I am working on it anyway.

[@Codeynamics]

Sorry I don't have the final file now. You can easily run the case from tutorials to get the solution though.

[@ap-qn9hw]

yeah for sure, thanks@@Codeynamics

[@TerragonCFD]

nice 🙂

[@Codeynamics]

Thankyou so much

[@beingahmed276]

we can use snappyhexmesh for 2d geometry alike flow over cylinder/prism????

[@Codeynamics]

Yes you can. Use type "empty" for the frontAndBack faces. Separate all faces from the geometry, use inlet.stl, outlet.stl, walls.stl, prism.stl, frontAndBack.stl and then do the snappyhexmesh. It should work fine. if it doesn't, mail us at [e-mail]

[@MarcelNKemet]

What parameter in snappyHexMeshDict controls the animation of the propeller? Thanks

[@Codeynamics]

snappyHexMeshDict was used only to create mesh for the case. It has no role in the animation directly.

[@MarcelNKemet]

@@Codeynamics In that case, I suspect animation is controlled by a custom function somewhere the system/controlDict

[@Codeynamics]

@@MarcelNKemet I dont understand what you are trying to say. The animation is post processed in paraview. how is animation related to controlDict?

[@MarcelNKemet]

@@Codeynamics I found out there is a dictionary (dynamicMeshDict) located in constant/ folder which controls the mesh animation. You could have mentioned that in the video. Anyway, good introduction to dyn meshes.

[@Codeynamics]

@@MarcelNKemet That doesnt control animation directly. That controls the mesh motion. Animation is a byproduct. So I didnt mention. Thankyou for your suggestions