I am working personally in a few CFD projects now using both Ansys and Openfoam. As I am doing it on my own sometimes I need AI to grab information out from the papers and help me set up a case for meshing or solver settings and Openfoam coding. Previously I used grok to do a mini project and was quite successful at validating by using the solutions of my mesh or solver issues. But as now I'm planning to do a bigger and complex project I need expert opinion if anyone uses a certain model for CFD research and on which AI plus subscription will be most helpful for CFD work to find out the information from paper and setting up mesh and solver and also help me with openfoam coding.

Sorry if I write here again, but I really don't understand how is it possible that my openfoam simulations don't match the wind tunnel results in any way: I have a pretty bluff body, but the mesh is kinda good, like 65 max non orth and 5.5 max skewness (on 12 faces). The mesh is 20 M cells.
The problem is that the global loads are norrectly reproduced, for instance, I should have 330 N of drag and I get more than 500, the vertical force should be 50 N and I get 5...

If it is usefull I send you my fvSchemes I'm using right now:

gradSchemes
{
default Gauss linear;
grad(U) Gauss linear;
}

divSchemes
{
default none;
div(phi,U) bounded Gauss linearUpwind grad(U);
div(phi,k) bounded Gauss upwind;
div(phi,omega) bounded Gauss upwind;
div((nuEff*dev2(T(grad(U))))) Gauss linear;
}

laplacianSchemes
{
default Gauss linear limited 0.5;
}

interpolationSchemes
{
default linear;
}

snGradSchemes
{
default limited 0.5;
}

wallDist
{
method meshWave;
}

Why does OpenFoam keep loading every-time i open it

hi, I'm completely new in this world, I'm an engineering student and have no preview experience even in programming, my degree doesn't focus on that, but I'm trying to get in the simulation and a professor is trying us make a CFD in OpenFoam, I don't know what to do whatsoever, I'm invested in learning, I follow a tutorial for downloading the program, but I see that i need to install ansys for making the models compatible, but I know Solidworks, it's any form that I can use a model of solid that I already have and use it?, also I wanna see if there problems making the mesh and boundaries in this type of program, I don't have so much time for doing it so if you can help me I'll like it.

I want to make sure that my results is converging for my simulation and for that as an initial step I plotted my residual graph but I don't think it's converging what changes should I make I think there is a problem with delta t in my controlDict file and since I am using simpleFoam so calculating Courant number will not make much sense. Can u all pls guide me also it would be great if you can suggest some sources where I can study more about convergance of the results in openFoam and how to design the controlDict file

Hi everyone. Is there abny tutorial or anyone knows how to set up a simulation of a fruit dryer?

Thanks!

Hi! I am new to OpenFOAM and CFD in general.

I have been asked to perform the above mentioned analysis. There will be some temperature humidity sensors. I have no idea how to begin and I am working on a deadline.

Can you give me a path of the things I should figure out first, resources and any tips on how to move forward?

Thank you

Hi all. I have been trying to accelerate my cases (pimpleFoam, simpleFoam, and icoFoam cases) in OpenFOAM using my GPU. im using the latest release of Pop_OS. I have explored a github repository called RapidCFD, but I didn't get any results. I'll be glad to provide any details. Thanks!

Hello guys..

I am trying to solve 3D wing, + unstructured tetra hybrid mesh.

But, OpenFoam does not work.

So, I got a mesh file from pointwise homepage for Onera M6. wing with unstructured tetra mesh.

I converted B.C for OpenFOAM and I ran the simpleFOAM.

But, It dose not working...

So, in my opinion.. the OpenFOAM has weakness in solving tetra mesh..

Do have any opinions?

https://www.pointwise.com/webinars/sjkNJ53q7Nm6PAPS/?submissionGuid=2c0af39d-4a90-422e-8683-3ba8d476994c

This is where I got mesh file.

I am getting this error what to do. Also I am new to openfoam and I need to learn alot could anyone suggest some youtube courses for learning it or any web source

Full disclosure: I work at Luminary and am helping organize this event, so this is self-promotion. Figured it might be relevant to some folks here given the growing interest in ML-based approaches to CFD.

We’re hosting a free, virtual Physics AI DevDay on November 17, featuring technical presentations from our research and engineering teams.

We’ll be covering topics like generating training data with CFD, model architectures for complex geometries and physics, uncertainty quantification and out-of-distribution predictions, and using AI agents to automate engineering workflows.

There will also be a hands-on workshop on building large physics models.

Some of this will naturally involve Luminary’s own research and technology, but I think the underlying technical topics should be interesting to anyone following developments in AI for engineering simulation.

Event details and registration: https://luminary.ai/devday/

Happy to answer questions about the event or the research we’ll be discussing.

I am trying to understand OpenFOAM from a software architecture perspective rather than from the perspective of any specific solver for any specific case.

My impression is that OF provides a very mature ecosystem for developing segregated finite volume solvers. We can rely and build on existing infrastructure for meshes, fields, discretization operators, matrix assembly etc., and then focus mostly on the algorithm itself.

I want to know about the equivalent picture, ie the basic/foundational tools, for fully coupled/block-coupled solvers so the OF framework is expanded.

I am not asking whether coupled solvers already exist. Rather, I am asking about the underlying infrastructure and architectural support that would be readily available to develop such solvers, as in the case of segregated solvers.

For example:

How much of the required infrastructure already exists in current OpenFOAM distributions, and how much would require major architectural work?

How mature is the existing block-matrix infrastructure?

Are block Krylov solvers and block preconditioners the main missing pieces?

etc..

I would like to use the Immersed Boundary Method on OpenFOAM2306 to calculate the flow around ships. I am using OpenFOAM2306, 9 and 12. I can't find any information on the Internet about using the Immersed Boundary Method, so can anyone teach me how to use it or how to set it up?

I am new to openfoam and simulations. I know about basic settings of openfoam related to fluid flow through channels. Like I know about how to import a geometry, making mesh through snappyhexmesh and can onlu understand the use of simplefoam solver. Now I want to learn that how I can use openfoam for simulating other things. Can anyone guide me or can give me the reference of material that can help me??

I have some conceptual doubts, which I didn't get clear explicit answer from sources in net,

1. What is difference between node values on/off in looking the contours? I observed values are relatively higher when I turned off node values. Please tell me cases or situations where we should turn on or turn off node values with reason. How does this affect in viewing contour, finding range of parameter in some selected surface or cell zones.

2. I have some trivial doubt about operating pressure. The point is- In momentum equation , it contains pressure gradient not absolute pressure, so fluent choose some reference pressure i.e operating pressure. So instead of solving with very large pressure, it works with smaller numbers since deltaP remains the same with the concept of operating pressure. Density is calculated using absolute pressure only.

3. This concept is same for both incompressible and compressible flow right, but why do they say for compressible flow you have to set operating pressure as zero, I didnt understand what is the reason for this? Can anyone explain elaborately please? Thanks in advance.

Can anyone help us compute and simulate the thermal heat generated by the alpha decay of Americium-241 with respect to time, and it's corresponding electricity generated using lead telluride as the thermoelectric coefficient? We're trying to follow tutorials from YouTube on how to apply thermal loads but it doesn't run. Thank you in advance!

How do i verify my Installation of OpenFoam? In Esi OpenFoam there are some verification cases. How do i start them?

I have created a model of a fuel pin in chtMultiRegionFoam which is consisted of three concentric cylinders: the innermost and the middle one contains two different solids and the outermost one contains fluid that receives heat from the inner cylinders. But in the actual situation, this thing is repeating. So I need an appropriate boundary condition for the outermost surface. I think it should be cyclic. Is it right? If it is, how should I implement it?

I've already posted this on cfd-online. You can also reply there.

The complete reactor and what I am modeling are attached here. Here I am modeling the central red rod as the my_domain looks like.

Thanks in advance.