Well, kinda difficult to help you there buddy

Nah anyways I've figured out that

Currently I'm working in preCICE ...if anyone knows how to establish a connection can anyone help

I've written my python code and openfoam case is ready the .XML is also ready but there are some issue

good day eneryone. I need to simulate a rod tumbling in a simple shear flow as a test case. I suppose the best way would be to use a rigidBodyMotion like in floatingObject tutorial, but with pimpleFoam since I'm not interested in multiphase simulation at the moment. The problem is, I can't really get it how to set a cylindrical rod. Does anyone knows about any related tutorials about how to write a dynamicMeshDict for arbitrary rigid bodies? I'm using OF 12.

What do you mean by "how to set a cylindrical rod"? Create the mesh?

The dynamicMeshDict itself should be pretty similar to the floatingObject tutorial if this is the kind of motion you want to do

I mean, in the floatingObject rigid body consists of a single cuboid. I would like to know how to change it from cuboid to cylindrical rod.

yeah, that's the meshing part. You just need to mesh the shape you want. In the tutorial the mesh is created entirely with blockMesh. You can mesh a cylinder with blockMesh even if this isn't the most pleasant experience or you can use snappyHexMesh to create your mesh.

Don’t I need to set an inertia tensor, mass, center of mass in a different way from how it is done in a tutorial?

Oh ok, yes of course you need to adjust the values/setup to reflect the properties of your object.

if you want to know what other choices you have, instead of the ``cuboid`` type, you can just replace it by ``banana`` in the tutorial, and run it again. You will get an error listing the valid types. This is the good old banana trick (https://openfoamwiki.net/index.php/OpenFOAM_guide/Use_bananas)

In the .org branch, if you don't like bananas a more elegant way could be to use the ``foamInfo`` and ``foamToC`` tools to find information about it. For instance : ``foamInfo "cuboid"``

Thank you! I will try to figure it out that way

more details about these tools: https://cfd.direct/openfoam/v11-useful-tools/

shouldnt be too hard with curved edges and enough mesh resolution tbh if they have rotational symmetry, could even use a wedge, which would be equivalent in that sense

quite possibly the dumbest question to be asked but how does one get the solid part of an airfoil? I am interested in simulating an FSI case of a flexible airfoil and creating simple shapes is easy with blockMesh and creating the fluid domain of the airfoil is also simple given a lot of opensource blockMesh codes but what about the solid part? the arifoil? how does one get that? i have seen a lot of people just import ansys meshes, but is there another way? thank you and im using solids4foam

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You can do the airfoild in block mesh also 👍🏻

oooooooohhhh

crazy

@otaolafr god bless you sir

Take this example: https://github.com/damogranlabs/classy_blocks/blob/master/examples/complex/airfoil/airfoil.py, change blocking to the above picture and you're done! Here's some context https://damogranlabs.com/2024/11/classy_blocks-tutorial-part-8-custom-sketches/ and if you want better blocking on-the-fly you can check out this https://damogranlabs.com/2023/11/classy_blocks-tutorial-part-7-optimization/ (a bit outdated though but optimization works the same)

thank you @kandelabr , i will get it done :)

I would gladly do it myself but really have no time right now so... the fate of the world is in your hands

leave it to me

god bless @kandelabr i am for nothing

if god blessed anything remotely connected with CFD we'd not be talking about simple meshes right now

god abandoned CFD long time ago