Видео

Thankyou

Yes.

Thankyou

I dont remember exactly. Maybe around 30k.

Thankyou very much

Check your CFL number. Keep it less than 1. It will be fine in most cases. Try adaptive time stepping to make things easier. sure I'll make a video on sonicFoam

that is FVM. Standard OpenFOAM simulation.

Please mail your problem with detailed description to admin@codeynamics.com

It is a dynamic meshing. The entire mesh (geometry) oscillates at a specific frequency.

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.

Glad you enjoyed it

Most welcome. Thanks for your support

Thankyou for your suggestion. Will make LES using OpenFOAM asap. Will try to make in fluent too.

Thankyou for your support

Thankyou for your support

Just create a new folder named triSurface and add your stl files there.

Means a lot. thankyou so much. Share and support

Sure. Will drop a video on that soon.

theoretical yes. you can. but practically that would ruin your simulation and consistency of your results.

@@Codeynamics Thanks

Thanks for commenting. Please mail the zipped case file to codeynamics@gmail.com we will get back to you asap

@@Codeynamics thanks a lot, have a great day

Air, oil, water and mercury

Thankyou

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

Yes. I will do a stationary mesh case soon. But the dynamic meshing case will take time. The video is getting way too lengthy and the simulation takes days to complete. Ill make a video on how to setup the case for dynamic mesh without running it though.

@@Codeynamics That's perfectly fine. Even if you just say or instruct on how to run the sim (without actually running the sim), that will be really helpful. Thank you.

Uploading soon!..... Thankyou for your comment

Uploaded the meshing tutorial: ruclips.net/video/NbAUjwUotCE/видео.html Will do the dynamic meshing simulation case soon.

@@CodeynamicsVery much appreciated

I will try for sure!

@@Codeynamics Thanks!!!!

Thankyou for the comment.

Please write a detailed email about the error along with screenshots to codeynamics@gmail.com. Our engineers will reply soon.

We do not suggest using the .org/foundation version. Especially anything after v-10. To follow our videos, please use ESI/.com version of OpenFOAM.

@@Codeynamics Alright thanks so much!

😄

sure. Will do soon.

Thankyou soo much. Do support by subscribing and sharing 😊

​@@Codeynamics Today I followed the tutorial and succesfully did the meshing. I am also thinking to run the case considering a random velocity of fluid. I must again thank you for making everything as clear as possible. I was wondering if you can make a tutorial meshing the same file in "cfMesh" . Also, can you make any tutorial on meshing and case setting a wind turbine!

Sure will try to make them.

Sure. Soon Please do Subscribe and support

Uploaded the tutorial: ruclips.net/video/NbAUjwUotCE/видео.html

@@Codeynamics Thank you :)

😂😂😂

r/thathappened

@@Gordy-io8sb what does that mean redditor

@@yepyen No, you didn't. You clearly didn't.

@@Gordy-io8sb do you even know how lissajous curves work? The circle is being made by 1:1 ratio, if you try 2:1 it will turn into an elipse, rise the value and will get tighter and tighter eventually forming a straight line. I did something wrong and somehow it turned inside out like this. I even have proof if you want

Thankyou. I did not run the simulation. If you had to run for that case specifically, you should be using simpleFoam command. It depends on the solver. Please do subscribe and support for more useful videos.

@@Codeynamics hello again, i'm having a problem with the snappyhexmesh.When i run it i am usually having blocks meshed around the airplane instead of the geometry being meshed completly.So the resulting mesh is just a bunch of blocks surrounding the aircraft what can be causing this error?I just used the snappyhexmesh command without the mpirun because for some reason it told me that this command doesn't exist could this be the reason?

The reason is that in the snappyHexMeshDict, under snapControls function, see the 6th and the 7th parameters. set the implicitFeatureSnap to false and set explicitFeatureSnap to true. This should make your problem solved. The behavior with just snappyHexMesh will be exactly the same as doing it with decomposed case. It is only a matter of time that differs for both the process. mpirun case is faster due to parallel processing. I hope this is clear.

x = sin (t/12), y = sin (t/11). t varied from 0 to 600 pi

😊😊

There is no blockMesh for the cases where we import mesh from Ansys.

How can I import from Ansys in not familiar with Ansys

this video is about making mesh in ansys and importing it in OpenFOAM. Pls follow along. if you need the same mesh made in OpenFOAM, pls contact us at codeynamics@gmail.com

Welcome. please subscribe and support.

Yes sure. I will make one.

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

Use turbulence models like kOmegaSST or kEpsilon or spalartAllmaras. I can make a video on that for flow over a cube if you need it.

@@Codeynamics please do a video. Thankyou ❤️

Can u try to make the simulation using simplefoam solver and rans realizable kepsilon model?

Okay. I will make. Maybe for a different case. But using these turbulence models.

It's complicated to explain it in comments.

@@Codeynamics sorry to bother, but I found it interesting

Is there a link to a scientific work or documents that would not be explained in the comments?​@@Codeynamics

You can study on the computing difference between a GPU and CPU on Nvidia's page. Or any computer science journals. If you want for CFD in specific, please read ANSYS documentation.

Thankyou, keep supporting

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

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

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

@@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.

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

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

yeah for sure, thanks@@Codeynamics

Yes. Just change the polyMesh or Mesh used in general. That is enough. Solver is same regardless of 2D or 3D. Thanks for your comment. Please sub, share and support!