Time-Stamps: 0:00 - Introduction/Overview 1:09 - Geometry: ANSYS DesignModeler 2:35 - Generate Mesh: Fluent Mesh 3:57 - Exporting Mesh File 4:27 - Navigate to project folder 5:05 - convert mesh to OpenFOAM format 5:36 - Check and modify boundary conditions 6:46 - Calculation Control 7:23 - Check mesh in ParaView 8:36 - run calculation 8:56 - save results 9:20 - post process in ParaView 10:40 - animation/closing remarks

Fantastic video! Short and simple and easy to understand. Of course, before we watch the video, we must have some basics of OpenFOAM (at least tried Lid Caity driven case) and Ansys-FLUENT. Keep up the good effort. Hope you have create more new videos.

probably the best tutorial for learning openfoam, being a beginner. other tutorials runs a pre-loaded case which is hard to learn and understand.

Thanks a lot. I was at a loss when simscale severely limited the community offer to only 10 simulations. OpenFOAM is not as intuitive but seems quite powerful.

informative , clear and lucid, need some more videos on brain aneurysms ANYSY and openFOAM, shall keep waiting. Thanks

amazing tutorial. definitely, it helps me in my project work. Hope you make more video like this, Thank you.

A true legend for this

Thank you so much for this. I really needed something like this!

Thousand thanks to you man. Keep up the charity work.

Hey! Nice video, thanks for sharing!

Excellent simulation

This tutorial is absolutely great, it helped me a lot with a school porject

oh boy this tutorial rocks!

This got me excited about going back to openfoam again and experiment after hopelessly struggling with that 90 degree elbow flow tutorial during my uni years

Extremely cool!

Very comprehensive. Liked the video..cudos

Oh wow! I just started learning OpenFOAM two weeks ago and I'm in the exact position you described. Its really difficult to find actually helpful (beginner focussed) content out there :(. Thanks for making this! :) I did have a question if you have the time. I'm trying to simulate airflow around an air rifle pellet (basically a bullet) as if in a wind tunnel. How do I best go about setting up the original case folder? I could indeed just copy a folder like the motorBike tutorial, but every file there already seems customized to fit the motorbike.obj model. Is there a more basic way to create a case folder that works for general models or does that require extensive knowledge beyond a beginners capacity?

Excellent!

Good Tutorial. A few comments. You missed where to set the model in the constant folder. I know it's LES, but say someone wants to go with a RAS KOmegaSST model instead. Maybe it's out of the scope of the tutorial. Also, it would be helpful to go over the boundary conditions. For instance, why is there an inletOutlet condition on the outlet of U and what is a turbulent inlet condition. A lot of tutorials miss explaining what boundary conditions are and OpenFOAM is very sensitive to them. The angle you're taking in your tutorials is great and needed, thank you and keep it up.

Thanks buddy.

Great video! A question Why is the value of k on internal field cero? Is this value for the definition of turbulentinlet on the inlet? Best regards.

This is not a complete tutorial... You have edited some of the files in system and you have not shown what you have done. blockMeshDict for example has "upperWall", "lowerWall" and "frontAndBack", whereas our geometry has just wall. I have no idea what values to put in the matrices for wall. Running this setup throws errors. So this is another frustrating, incomplete OpenFOAM tutorial.... I get this error: "--> FOAM Warning : From void Foam::polyBoundaryMesh::calcGroupIDs() const in file meshes/polyMesh/polyBoundaryMesh/polyBoundaryMesh.C at line 100 Removed group 'wall' which clashes with patch 2 of the same name. --> FOAM Warning : From Foam::labelHashSet Foam::polyBoundaryMesh::patchSet(const Foam::UList&, bool, bool) const in file meshes/polyMesh/polyBoundaryMesh/polyBoundaryMesh.C at line 915 Cannot find any patch or group names matching lowerWall --> FOAM Warning : From Foam::labelHashSet Foam::polyBoundaryMesh::patchSet(const Foam::UList&, bool, bool) const in file meshes/polyMesh/polyBoundaryMesh/polyBoundaryMesh.C at line 921 Cannot find any patch names matching lowerWall Sampled surface: nearWall -> vtk sampledPatchInternalField: nearWall : patches:1(lowerWall)" EDIT: seems to run now. The only change I made was making sure that deltaT = 0.0001. However, my point stands with the blockMeshDict file. Why does it still run even though upper/lower/front and back are mentioned there? And if I want to only mention "wall", how do I find the values to put in the matrix?

AMAZING, very good job. If you have a Patreon page, let us know!!

Thank you a lot! I am learning to apply LES in building ventilation simulation in bluecfd and I find this video very helpful and straightforward! I have a very simple question: why do we use OpenFoam to do simulation if we have Ansys Fluent? What's the advantage of OpenFoam compared to Ansys Fluent?

try to make videos as simple as possible from scratch the way you are making now.thank you very much.

Hi, How do you make a 3D colormap like you have right at the start of the video ?

thank you for the tutorial! it is great!!

so I just need a case a case that is already written? which cases are good for simulating a water pump impeler and a other case for simulating car aerodynamics?

I have been able to follow everything up until the fluent3DToMesh command. It is giving me: "FOAM FATAL IO ERROR: Essential value for keyword 'field' not set. In function entry: scalarTransport in file /.../controlDict at line 130 The function entry should be: scalarTransport(field = )". Regarding the path, I copied the folder from the github repo titled OpenFOAM-pisoFoam-LES-Step-1-main and placed it in my tutorials/.../LES path making sure to add the mesh.msh file also. What changes do I need to make to the controlDict file to correct the error?

How would I go about testing how loud a whistle is? Say I was designing a whistle and I wanted to compare designs to see what is the loudest whistle within the range of human perception

Nice tutorial. FYI, I would have preferred it without any music.

Hi. Thank you for your tutorial. Unfortunately m, I was disappointedat. I mean the content of the video and its description are not identical: No focus on how to setup the case, no focus on the turbulence model, why to choose that model, how to set its coefficients, how to set the boundary/initial conditions in 0 folder. The main focus was only on mesh generation which is relatively easy compared to case preparation and proper setup itself.

Great video! Could you do a tutorial on open channel flow (like square or trapezoidal crossection of the channel)

Can you please do same for flow over cylinder and calculate drag and lift? Thank you

can you make a video about the software you used to generate this msh file

can you plese tell us how you set up the 0,constant and system folders?

Does anyone know how to open a .msh in Paraview? I've tried installing a couple of plugins to no avail.

Hello, I appreciate the efforts that you have made as I am in a similar boat as you appeared to be. The question I have is how do I get the software that you use to make the mesh? When I look it up it appears to be for professionals and students not hobbyists like me. Do you know how I can get a mesh without having to spend excessive amounts of money?

god bless your soul.

how do you create the files in 0, constant, and system folder?

Hi, thank you for the detailed guide! I'm new to OpenFOAM and ubuntu in general, but everytime I try to create a folder in my ubuntu directory, I dont have permission to open it through the ubuntu terminal to i.e. run the solver pisoFoam. It says that it doesn't have the permission to open the "p" in my "0" folder? I don't know how to get around this and give ubuntu the permission it needs to open the files and run the solver. Any ideas on how to overcome this?

can we run the animation with a random .stl?

Hello, I am discovering OpenFOAM, I keep having an error in the console where I doesn't find my .msh file. I am using Ubuntu 20.04 with the same OpenFOAM version (20.12). Any help would be really appreciated, thank you. Also, besides this error, how should we setup the 0, system and constant folders' files ?

Thank you! if you can help to show result (coefficients,..) will be better

Hi gréât job, Can we use sketchup models, and how we van show thé animation indice unreal engine, if its possible, and van we use a big model as e parc of city with terrain (topographic as montzin)? Thank you

i ran the pisofoam however there is an error: --> FOAM FATAL IO ERROR: (openfoam-2106) Unexpected EOF while reading dictionary entry From static bool Foam::entry::New(Foam::dictionary&, Foam::Istream&, Foam::entry::inputMode, int) in file db/dictionary/entry/entryIO.C at line 165. do you know how to fix this? thanks in advance

Nice! It's possible use ANSYS to plot results from OpenFOAM?

Hey, quick question. Do we ever create our own controlDict and other files? As in, are problems always run by making use of the different cases given inside the 'tutorials' folder in OpenFOAM? Will there be a requirement to create out own controlDicts and/or other files? Thanks a bunch!

As far as my understanding goes, the mesh you created in Ansys was a custom one. How did you get the 0, constant, and system files for the simulation to run? The rest of the video is very informative, so thanks.

May i ask something really simple ? If you import geometry from ansys and you generate mesh in ansys , why not to run it in ansys fluent?

hello, when making my model and checking with Paraview, i have something called patch/walls and it doesn't allow me to pisoFoam the file as it says "cannot find Patchfield entry for wall". It also removes the group wall since it clashes with the patch called wall. Should I delete the patch called wall ? I honestly don't know from what it came from

I cant get ANYSY to work. Are there any alternatives? I use Fusion 360 to generate my Geometry but I dont know how to generate a Mesh for CFD. I am trying to learn CFD for my hobby, building RC planes.

I just have a question. Why using ansys instead of an free alternative? I mean, I suppose the idea by using OpenFoam is to avoid privative software.

Hey could you please tell me a way to design the geometry than using ANSYS. I run Openfoam on linux. Thanks

Hi. Thanks for the helpful videos. I am a beginner in openfoam currently learning it in windows Ubuntu LTS. When I modify any case file in a text editor, I have to everything give it the read permission in terminal before solution. But, you do not seem to be doing it. Please tell me how can I give permission once and all for all case files so that I can also use it seamlessly like you. Thanks in advance.

Even in 2023, most of the so called "tutorials" simply load one of the examples in the installation folder of the package. I find your tutorial very useful, but would like to know other non commercial alternatives to create a (probably complex) mesh.

thank you it is interesting.. I just started learning OpenFOAM just now I am learning to apply aerodynamic effect simulation on buses...and i do not have the software please send me the app software

Any chance you could add time stamps? I keep coming back to this video as I'm learning different steps! would help me greatly!

I can't get Ansys to generate a mesh like yours. It creates a mesh on the surface and not on the inside of whenever I try to get it generate my mesh. No matter what I do Ansys just creates a mesh that is on the outside of my geometry, so it never works.

Thanks a lot for your efforts 🌹 Just wonder when did you modified the Boundary Conditions of the case, I think you have just opened the files, but it would much helpful if you change something then show that change in post processing. Also you mentioned Courant number, but didn’t say what to do with it. Thank you very much again :)

Hey, cheers for your video. Do you intend to share the code in a repo?

what are the specifications of your computer?

Give more tutorials in openfoam

Can you do a tutorial on Oversetting mesh and also on dynamic meshing, I'm about to give up there isn't just enough material. There are videos from "Wolf Dynamics" no offence him, but I can't understand the accent.

great tutorial but music in the background is very annoying

you had me till you mentioned Ansys. thought you were gonna use open-source software like gmsh to create the geometry. not everyone has/will have ansys after uni.

Hmmm... I'm planning on learning CFD and I found OpenFOAM. But after watching this, I don't think it's a software for beginners... Do you happen to have any recommendation for newbies? I've seen my friend use Ansys but it seems just as complicated... P.S.: I have little to no experience with linux or whatever Ubuntu is....

It does little good to post a tutorial for Open Source software, and then use very expensive CAD tools to make the model.

I dont have ansys

Making the tutorial depend on ANSYS Modeler kind of defeats the purpose. If we had ANSYS then we would probably not be worried about OpenFOAM.

If you have an ANSYS FLUENT license, why would you use OpenFOAM?! 🤔 please create a tutorial to use Gmsh for geometry and mesh generation.

well you did not do a better job, incomprehensible

its been almost 20 years and this guys didnt build an user interface.

iam gay

There has to be something a little bit more user-friendly than this. This seems like trash. The fact that you have to go from the GUI to the command line prompt is redundant.

music is not helpful ... distracting...but the video is otherwise great...

Hi, I've encountered this error, any insights on how to solve this? Thanks. # Probe 0 (0.0254 0.0253 0) # Not Found # Probe 1 (0.0508 0.0253 0) # Not Found # Probe 2 (0.0762 0.0253 0) # Not Found # Probe 3 (0.1016 0.0253 0) # Not Found # Probe 4 (0.127 0.0253 0) # Not Found # Probe 5 (0.1524 0.0253 0) # Not Found # Probe 6 (0.1778 0.0253 0) # Not Found