Crispy background ocean water

[rescale]

Hi guys,

I'm new with Phoenix / Vray and working actual on a trailer for a fishing game with ships. I'm very satisfied with my boat watersim / foam but I got this major problem. If the camera is on a small angle to the ocean, the water in the background gets very crispy and noisy. Is there any trick how I can get rid of this? Please see the picture!

Greetings

Dirk

[Svetlin.Nikolov]

Hey,

Have you tried adjusting the ocean subdivisions from the Rendering panel?
https://docs.chaosgroup.com/display/...ng-OceanSubdiv

Cheers!

[rescale]

Hey,

no didn't try this, can I change this value without resimulating the scene?

Greetings

[Svetlin.Nikolov]

Sure - all settings in the Rendering panel are applied over the already simulated caches at preview or render time and would not need simulating again.

Cheers!

[baro]

Hey Dirk,
excellent job with this sim!!!
At what speed is your ship moving. I've been experimenting for long time but can never get a stern wave system. My boats* move at about 15kn and get dissent bow wave, but nothing behind the stern. It could be a stern shape dependent thing, but your picture looks very real and in compliment with hydrodynamics too.
And the foam/splash is so real as well. Did you start with presets or form scratch?
I've tried both to no avail - the foam/plash is either too much or not enough but consistently grainy at best. would you be willing to share your secret ingredient for cooking* such a realistic foam?

mine


cheers
pl

[Ivaylo Katev]

hey, baro, is this 3.0?

[rescale]

Hey Baro,

thanks for your feedback, there is no special ingredient. I used the sample ship file from chaosgroup as basic and change some of the stuff. For our interested, I upload the videoscene to vimeo :

I guess, one of the major difference between you and my scene is the shape of the ship. You had a very flat front side of the ship, my ship is more sharp . I will post later my settings for the scene.

Greetings

[baro]

yes it is

[baro]

nicely done video
I also had good results whit the sample scene, but that boat moves with 25kn, the sim setting were for v2.2 and units 1u=20cm.
I've been unlucky reproducing such a good results using v.3 presets or starting from scratch.
the bow on my ship is pretty dull indeed since it is slow steamer (14-17kn max speed):

and the bow wave is what is typical for such shape:

it is the stern wave system on you boat that I envy*.

now, the lack of such on a tanker:

is not untypical, only that it is a uneventful and boating and I want to be able to fake it

[rescale]

Hey,

here you can see my settings and the trawler shiphull that I used for simulating the water. For the speed I used the same as the sample file. Hope that helps you a bit.

[Ivaylo Katev]

the sample scene is reworked for 3.0 and the stern wave is handled by a source that represents the propellers, it's really surprisingly how many users forget them

[rescale]

Hey Ivaylo,

I did'nt forget the sorce for represents the propellers. I tested it first with such a source but wasn't quite satisfied with the results, so I came up with simulating it only with a mainhull source and liked the result of it.

the sample scene is reworked for 3.0 and the stern wave is handled by a source that represents the propellers, it's really surprisingly how many users forget them