Von Karman vortex street (laminar, temperature), Re = 250

A Computational Fluid Dynamics (CFD) simulation of the Von Karman vortex street behind a hot cylinder. Reynolds number Re = 250. Codes used: Gmsh, dolfyn, and VisIt. (wervelstraat, Wirbelstrasse)

[@BHARGAV_GAJJAR]

These beautiful mysteries of the universe and the human understanding of it makes our times worth living....

[@DolfynNet]

Codes used: Gmsh (meshing), dolfyn (simulation), and VisIt (visualisation), none of them are by Ansys, all of them are free and open-source.

[@Jbroglydecap]

Can you share the code on github?? that would be awesome

[@TheRojo387]

Could placing cylindrical structures in a spiral pattern build up the vortices of one chirality enough to create a twister?

[@burhanuludag8445]

Fantastic

[@Time2Warp]

the world is naturally beautiful, whether we can see it or not. :)

[@bushcatbandit2566]

Trust me, this isn’t a “naturally beautiful” thing when you’re caught up in it.

[@Neuro_nActivation]

I think I'd rather see the beautiful phenomenon, thanks

[@laprepper]

This is FASCINATING!

[@Chapter1987]

Best Von Karman Vortex street simulation i've seen

[@nnananahh]

This is the dance of the universe

[@varunlobo]

Its beautiful

[@DolfynNet]

@rosikru It is definitely U (unsteady) and indeed the Navier-Stokes equations.

[@DolfynNet]

thank you!

[@luckyirvin]

can this apply to how our earth's trailing magnetic field recouples?

[@beomjinkim5359]

Great video. And what program is this?

[@calebtemples9568]

don’t know why i’m watching this but i’m glad i did

[@professormanhattan7254]

This for no good reason caused me immense feelings of unease and terror. It really cool don't get me wrong, but jeez that was intense

[@MIJAPLEX]

Nice work! Can you tell me please wich BC did you use for the exit plane?

[@DolfynNet]

Thanks for the compliments. See the dolfyn.net website for details.

[@websonic1000]

Hi,
Do you think it is possible to see in more detail one f created vortexes?

[@jaypatel590]

I think you were using some sort of super computer for this simulation...Can you provide the information of the system u used for running such awesome simulation so smoothly..Thanks and keep up the great work.

[@pawandeo2972]

what is dimension of a inlet,outlet, top n bottom

[@ThomasKarabela]

Amogus lol

[@Theres-No-God-But-Allah]

Sus

[@cmdargument]

thanks

[@nebulousjam8795]

Interesting!

[@DolfynNet]

Simple outlet. Details can be found at: dolfyn.net (look for the 8th Gmsh tutorial: von Karman vortex street)

[@jeanconstantinople2328]

I want this as my Screensaver

[@antjasemrome]

think my volume might be broken

[@radioactive1]

Hi, I wonder what settings do you use to generate the mesh on Gmsh?

[@HenkKrus]

You will find your answer on the dolfyn website :- )

[@mikaelhoudet77]

Thank for the video
I don't use the same software
Can you remember the caracteristics you used? (cylinder size, fluid, fluid speed)

[@feuilledesbois5915]

Hey,
I'm aslo intresseted about this

[@DolfynNet]

please do!

[@willylagos]

which program is it?

[@beomjinkim5359]

What is this program

[@ros1k]

is it uRANS? what equations do you solve?

[@industrialengineer6449]

Hi!! I have done this problem in my computer, but I don´t know how to do this video, Could you help me please??

[@DolfynNet]

+Industrial Engineer
That depends on your postprocessing software. Create many pictures (25 per second) and import them into a "movie builder" (for example "OpenShot" on Linux/Ubuntu).

[@user-vg8md7uu5f]

ANSYS ?

[@mehdimovahedaagre8253]

what does the pseudocolor band represent and in which unit?!

[@DolfynNet]

In the legend you will find the hint temperature and Kelvin - it is meant as a tracer

[@mehdimovahedaagre8253]

DolfynNet Thanks for your reply.

[@TheTPotts87]

cool hadouken

[@mukesh7452]

Aero 4B anybody ?

[@DrQuarkable]

uhuu! Clone babies X)

[@kakaluot438301327]

so fucking beautiful!

[@DolfynNet]

赵南一
Thanks :-)

[@iebalazs]

This phenomenon caused the death of Djatlov group in 1959...

[@cyrusIIIII]

What are the colors representing?

[@DolfynNet]

The title and legend mention temperature - it is a heated cylinder

[@cyrusIIIII]

DolfynNet haha I did not pay attention to the title and I simply could not read the colorful bar :)
Is this a free software?

[@DolfynNet]

Yes all codes used (GMSH, dolfyn, and VisIt) are free software. On www.dolfyn.net it shows you how it has been done.

[@cyrusIIIII]

DolfynNet What is the advantage of this to openfoam?

[@DolfynNet]

Be my guest to find out yourselves and if you like it, use it, if you don't, well... don't use it. It is easy to understand (40k lines of code in total) and people who never compiled any source code (on Windows) are able to do so, and actually do.

[@unlimitedcreativity6630]

If you could make experiments for Tesla's turbine, that would be great! People want to see how Tesla's turbine works.

[@noelalexisshaw-nas-noz5142]

Our Luminaries Processions Then 🤦🤦

[@ethertoroid7091]

Look like microwaves in waveguide

[@aemeerzanhaziq]

This such kind of experiment solved Russian most mysterious death case

[@jumpluff167]

It didn't solve the mystery, this was just a hypothesized theory.

[@ericluriergo8251]

Adam Perez Exactly. Nothing was solved!

[@mashnbangers22]

sexy

[@beomjinkim5359]

Great video. And what program is this?