Example with analytical solution

hesam

greetings everyone!

Are there any examples with analytical solutions in this program?

(such as Taylor-Green Vortex)

Regards

Asalih3d

There is an example with Poiseuille flow, if that is what you mean?

I also believe that the Taylor-Green Vortex has been simulated in a few different SPH papers, but I don't think there is an easy way to do it directly inside of DualSPHyiscs, without altering the code - I might be wrong though!

Kind regards

hesam

https://forums.dual.sphysics.org/discussion/comment/4652#Comment_4652

Thanks for your guidance!

I tried to solve the Taylor-Green Vortex problem with Dualsphysics, but when I set the gravity to zero, it gives an error.

Kind regards.

Asalih3d

What was the error? It could simply be that you have to specify a speed of sound directly, which is a common error when gz has been set to zero.

Kind regards

hesam

https://forums.dual.sphysics.org/discussion/comment/4655#Comment_4655

Dedicated to you

Alex

Please follow the example in DualSPHysics_v5.0\examples\main\03_MovingSquare where we have imposed the value of cteB:

      <b value="1.1200e+05" auto="false" />

Otherwise with gravity = 0 then cteB=0

Regards

hesam

https://forums.dual.sphysics.org/discussion/comment/4657#Comment_4657

Thank you very much for your guidance and kindness

Asalih3d

https://forums.dual.sphysics.org/discussion/comment/4656#Comment_4656

Exactly as @Alex said, just to show you the formula as well:

So you should not set b to anything random, but here you have a formula of how to calculate it.

Kind regards

hesam

https://forums.dual.sphysics.org/discussion/comment/4661#Comment_4661

Thank you very much for making this clear to me