Search found 73 matches

by chris001
04 Sep 2014, 14:09
Forum: TurbulenceFD for CINEMA 4D
Topic: Best way to render a separate pass with just Turbulence FD
Replies: 7
Views: 4939

Re: Best way to render a separate pass with just Turbulence

we always render the fluids separately. Are parts of your cache behind transparent objects? then you will get problems, because matte objects are not transparent. GI and reflection can be rendered in separate passes as well. And you could try to render with "Geometry" antialiasing, maybe that is eno...
by chris001
29 Aug 2014, 10:40
Forum: TurbulenceFD for CINEMA 4D
Topic: Hair object as TFD emitter?
Replies: 2
Views: 1236

Re: Hair object as TFD emitter?

Go to the "Generate" tab of your hair object and change the Type to "Square". Then open your Hair Material and change the Thickness to both Root&Tip = 4. This seems to work. Although the single hairs don't have a closed volume. Not sure if this can make problems. If it does, uncheck the "Fill Object...
by chris001
15 Aug 2014, 18:00
Forum: TurbulenceFD for CINEMA 4D
Topic: Simulating huge scenes.
Replies: 2
Views: 3131

Re: Simulating huge scenes.

you should split this up into 2 simulations: - 1 small but detailed sim close to the airplane. this one disappears quickly (adjust Cooling and Clipping) - and one large but lowres sim for the trail. 2sims.jpg You can adjust the substeps in "Container->Simulation->Solver->Frame Sub-Steps Limit". I us...
by chris001
13 May 2014, 10:45
Forum: TurbulenceFD for CINEMA 4D
Topic: Rendertimes - optimizations?
Replies: 6
Views: 10675

Re: Rendertimes - optimizations?

subgrid noise can increase rendertimes as well...
If you have the feeling that rendering takes too long on "invisible" parts you can clip those low densitiy areas with the mapping graph. You could set the most left control point to an X-value of e.g. "0.01"
by chris001
22 Apr 2014, 12:01
Forum: TurbulenceFD for CINEMA 4D
Topic: TFD strength reduced in AE Cineware
Replies: 7
Views: 5061

Re: TFD strength reduced in AE Cineware

is the composition set to 32bit?
edit: I never used Cineware, but maybe it's important that the render settings inside the c4d-file are set to 32bit as well
by chris001
21 Mar 2014, 13:11
Forum: TurbulenceFD for CINEMA 4D
Topic: Problem with using multiple collision surfaces
Replies: 1
Views: 896

Re: Problem with using multiple collision surfaces

maybe the boxes don't have enough thickness so they are thinner then the simulation grid cell size. you can set the simulation viewport preview from "temperature" to "collision" to see what's wrong...
by chris001
11 Mar 2014, 18:10
Forum: TurbulenceFD for CINEMA 4D
Topic: xpresso - difference between PFluid and GetFluid velocity?
Replies: 2
Views: 1499

Re: xpresso - difference between PFluid and GetFluid velocit

ok, it seems the GetFluidData gives a wrong velocity for the Z axis.
Actually, it is reversed. So i added a multiply node and multiplied the Z velocity with -1 before passing it to the SetData. Now it's perfect, but this is probably a bug!
by chris001
11 Mar 2014, 14:23
Forum: TurbulenceFD for CINEMA 4D
Topic: xpresso - difference between PFluid and GetFluid velocity?
Replies: 2
Views: 1499

xpresso - difference between PFluid and GetFluid velocity?

I want Thinking Particles to follow the fluids. So I guess there are 2 approaches here: 1) simply use the PFluid node. or 2) read fluids velocity at particle position via GetFluidData and use SetData to set the velocity. Bot give completely different results. The first moves nice with the simulation...
by chris001
10 Mar 2014, 13:48
Forum: TurbulenceFD for CINEMA 4D
Topic: Multiple Scattering & Light Brightness
Replies: 3
Views: 1563

Multiple Scattering & Light Brightness

I don't (!) want the light objects being used for Multiple Scattering to save some rendertime and the normal illumination looks good. Only the fire should give some additional light. But if I set the Multiple Scattering "Light Brightness" to 0% I don't have any illumination at all - the normal illum...
by chris001
10 Mar 2014, 13:25
Forum: TurbulenceFD for CINEMA 4D
Topic: Don't use Subgrid-Detail for Multiple Scattering
Replies: 0
Views: 1419

Don't use Subgrid-Detail for Multiple Scattering

Using Subgrid Detail for fire increases the preperation time for Mulitple Scattering drastically... Maybe a checkbox could be added that makes the illumination use the "undistorted" fire with less details?