Questions about simulation results

dupeng

Hi,
I did a simulation about an object moving in calm water. The simulation is fine. But the waves generated by the object are not smooth after using isosurface command. They look like the wool of the sheep. What might be the problem? As I see, it might be caused by the interpolation of the isosurface command. Another possibility is that it doesn't consider the surface tension in Dualsphysics. Can anyone give me some suggestions about the reason and the way to fix the problem? Thanks.

dupeng

Mine is like this:
https://drive.google.com/file/d/0BxPwBcrBoQ5GaW1nRDJXbHVZN0E/view?ts=56efb457
https://drive.google.com/file/d/0BxPwBcrBoQ5GcTJjTnhRSkdqYTQ/view?ts=56efb46f
I used the laminar+SPS model with viscosity 0.000001 (water) and dp 0.1. I saw the response of Alex to you. Hope the new version can fix this problem. Have you solved the problem?

dupeng

Sorry, dp in my simulation is about 0.04, not 0.1.

dupeng

Sorry, you can check if the following two links work:
https://drive.google.com/file/d/0BxPwBcrBoQ5GaW1nRDJXbHVZN0E/view?usp=sharing
https://drive.google.com/file/d/0BxPwBcrBoQ5GcTJjTnhRSkdqYTQ/view?usp=sharing
The waves can be clearly seen, but the free surface is not smooth. What kind of change do you make to the geometry? Maybe I can get some clues from your case. Thanks.

dupeng

Yes, I'm also waiting for the new release. Thanks for your response. Overall, DualSPHysics is a good tool, though not mature enough now.