Meshing multiple grids

[PowerCreative]

Hello,

First post (for PFD), couldn't find my answer in a search. I have a few individual sims/grids that I would like to mesh as one. Is this possible with phoenixfd or maybe even vraymetaball? I was not able to figure this out on my own. Or does that require another mesher like Frost to combine them? being able to merge sims together would be handy.

On a side note, I've put off picking up phoenixfd for a while and have been using realflow and fumefx for years, and I'm thoroughly impressed with phoenixfd. I really hope you guys continue to develop this tool because it's just fantastic.

Thanks!

[Ivaylo Katev]

i suppose you mean ocean sims, because this question is frequently asked for ships, actually to share the ocean extension for few ocean sims. this is not done automatically, in the most cases the solution is rendering all the sims in cap mode except one that is rendered as ocean. if your question is not about the ocean surface, can you explain more what you are trying to do?

[PowerCreative]

It wasn't for an ocean, but that's very good to know as ocean projects come up every now and then.

Basically, I was trying to use 3 different sims for better control of how each are handled, but need them meshed as one object because they're ultimately one liquid object at the end of it all. I learned that I could combine my separate sim grids together by using one as an emitter in another sim grid (like the wine bottle tutorial) and this works well enough rendering implicit geometry. My only problem now is that despite being 100% brush, there is a slight delay in the simulation picking up the velocity from the other grid. It produces a couple of frames overlapping lag before it picks up speed, and I think this is understandable even if it isn't desirable. I assume the cells can't go from 0 to max speed immediately without accelerating through drag. Here's a gif for illustration: https://i.imgur.com/77Tho1H.gif - blue is sim 1 and green is sim 2 inheriting sim 1's velocity. I think with motion blur and materials, this hickup will be unnoticed.

[Ivaylo Katev]

well, what if you just render them as separate meshes with equal material, this should produce the same result as if they are single mesh.