Particles are generated on the entire surface of the sea

[flat]

In the following ship scenes, Foam particles suddenly occurs on the entire sea surface in frame 3.
(and Barth Volume will be ignored)

https://drive.google.com/file/d/18cN...ew?usp=sharing

Using Phoenix FD 20180228 Nightlies

I'm found, When Grid cell size is slightly changed (0.22 to 0.27), whole particles do not occur.
What is the cause?

[georgi.zhekov]

Hello,

In your scene you have the "By Free fly" option on. You can find more about it here - https://docs.chaosgroup.com/display/...st-SplashBirth
It is not recommended to use a value other than 0.0 for ocean simulations because the liquid might sometimes be in a temporary state of free fall and create particles all over the place.
So just set the By free Fly to 0 and reduce your Splash Threshold so it will be easier for the splashes to be born.

[georgi.zhekov]

Also make sure that your Birth Volume geometry is set to Non-Solid from the Phoenix FD properties if you don't want it to interact with the rest of the simulation.

[flat]

hello, Georgi

In your scene you have the "By Free fly" option on.

Oops! That was right. Thank you for your advice.

solved. Thank you very much.

[Guest]

Just a tip: The ship geometry should be solid (closed) without any overlapping faces, open edges, multiple edges etc. Otherwise, you could experience some strange simulation behavior.