phoenixFD demo ocean

[waaazoo]

btw seeing the break downs for some very experienced people, they use velocity/vorticity to make the water white. i should make some experiments....
phoenix is able to export the vorticity, it's a hidden option. there is a parameter called "zmr" , when you set value 7 in it, the vorticity is exported into the smoke channel

I will try this but for now I have to pause all this and I'm a little sad not to have my infinite ocean I hope to see a nightly that works before the end of my evaluation period.

regards,

olivier

[waaazoo]

1- Good news for Phoenix. Regarding the problem I had on my i7 3930K crashing (P9X79 PRO mainboard), I updated the BIOS yesterday. I did some simulations while working on other projects (with mesh preview) and it simulated also over night, and no crash. So, it was probably a computer related problem, I hope it'll stay like this. I'll tell if I ever get a blue screen again.

2- Now, I'm considering buying a Xeon E5-2687W. On Asus website it's said that this CPU is supported with latest BIOS, but some features might be not supported :/
Does anybody use these CPU with this Board (P9X79 PRO) ? What kind of mainboards do you have ?

3- Rendering the Ocean test scene on the i7 3930K takes 6m57 for one frame. Rendering with DR (added 4 i7920) it takes 5m14.... not very efficient... what is the explanation ?

best regards,

Olivier

[Ivaylo Katev]

the main reason for inefficient DR is the big time for the preparation.
- big cache size and big time to transport it
- big time to build the mesh
- big time to build the accelerating trees.
see the vray log ant tell us the detailed time distribution, this means region rendering time and sequence rendering time

[waaazoo]

OK, thanks, I will check this.

Here is a new simulation and render I made https://vimeo.com/88628396

I'm quite disappointed with all this:
- at bow, it doesn't seem very natural. The waves are too long stretching to stern.
- foam pattern on the sides is not really nice, foam and splash size might be too big.
- the foam that is near to the hull on each sides is very dense and doesn't look good.
- the foam at stern is very strange. It doesn't seem to be moving. Everything at at stern looks very static.
- and then we have the problem when foam goes out of grid with this breakline

Do you think all this is mostly related to a scaling problem or grid definition ?

best regards,

Olivier

[Ivaylo Katev]

i also noticed that the foam at stern is not moving with the expected speed. we have to investigate this, one possible reason is lack of air friction

[waaazoo]

yes, absolutely. I'm reviewing all my settings. I'm pretty sure there is a mess up with scaling.

[Ivaylo Katev]

i will try to reproduce this effect and to dig into the reason.

[waaazoo]

Hi,

I'm getting slowly a better foam pattern. I started from scratch yesterday, but I find the units in phoenix still confusing (grid size, cells/grid, foam/splash sizes, etc...)

[Ivaylo Katev]

the most sizes and velocities used in phoenix are in scene units

[waaazoo]

New test: http://vimeo.com/88861935
I think foam pattern is now better but everything is a little exaggerated. I'm still on build from 17Feb. Is there something new in the builds ?

best regards,

Olivier

[Ivaylo Katev]

the ocean bug is still not fixed, don't switch to new build

[waaazoo]

new test: https://vimeo.com/89097143

Look how the foam behaves at stern. I can send scene again if you would like to check if there is anything totally wrong in my settings.

best regards,

olivier

Edit: better quality here http://youtu.be/qmu_66m_WKU

[jstrob]

getting really nice!

[waaazoo]

Thanks
I love your Iron Baby !

Doing a new test over the week-end. I hope to get something decent now...

[Truffi]

Hi

How is it possible to create foam on the wavetops created by the displacement?