[Rasmusiwersen]

Hi all

I am experiencing some weird behaviour of the water/air interphase, see attached screenshot. I get some small ripples in my interphase between air and water.

I am only using blockMesh to create the mesh, and using wave2Foam to calculate a streamfunction wave. Why to i see those ripples in the watersurface?? The models runs fine, no errors in checkMesh.

I am running OpenFOAM v2012.

Best
Rasmus

[pferro]

Hello,

Bad mesh.

1. Use regular cells without these large growth rates in the region of wave propagation.

2. increase the number of subcycle for alpha : 5

3. decrease your time step

Good luck.

Paulin

[Rasmusiwersen]

Originally Posted by pferro

Hello,

Bad mesh.

1. Use regular cells without these large growth rates in the region of wave propagation.

2. increase the number of subcycle for alpha : 5

3. decrease your time step

Good luck.

Paulin

Thank your for replying.
I resolved it from the first step you suggested. Usually I would try and keep an aspect ratio of 1, but the expansionrates were apparently the issue..
My timestep was set to dynamic.

Thank you!