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Fluids

Set up your Maya options for animation
Move the time slider over to frame 1 at the bottom of the screen.
timeslider_1

Change 24 fps to 30 fps over to the right on the time slider.
timeline_30fps


Lights
Add Lights to the scene. These will illuminate the smoke.


Render Test Settings
Press Render Settings icon upper right or middle  srender_settings

Under the Arnold Renderer
tab:
Under the Sampling arrow:
     Set Camera (AA) to 2      (a little grainy, default 3)
     Set Diffuse to 0      (default 2)
     Set Specular to 0      (default 2)
     Set Transmission to 0      (
default 2)
     Set SSS to 0      (
default 2)
     Set Volume Indirect to 0      (
default 2)
Under
Filter arrow
     Set
Width to 1
Under the Ray Depth arrow
     Set Total to 0      (
default 10)
     Set Diffuse
to 0      (
default 1)
     Set Specular
to 0      (
default 1)
     Set Transmisssion
to 0      (
default 8)
     Set Volume
to 0      (
default 0)
     Set Transparency Depth
to 0      (
default 10)





Basic Fire Tutorial
fx_module
  
Use the FX Module

Fluids->3D Container->option
     Uncheck Add Emitter:

Select the fluid object
Attribute Editor
Container Properties
     Base Resolution 40
     (default 10, higher for more detail and slower render)
     Size 5  15  5
Add an object or more to the scene to emit fluids, place within the container.

Select the fluid, shift select emitter object(s)
Fluids->Add/Edit Contents->Emit from Object



Fluid Container Settings
Select the fluid
Contents Method
     Temperature   Dynamic Grid
      (default Off(zero))


Dynamic Simulation
     Viscosity 0     (.05, default 0)
     High Detail Solve   All Grids    (off, default Off)
     Substeps 1
    (default 1)
     Solver Quality 20     (default 20)


Auto Resize
     Select Auto Resize  (default off)


Content Details
     Density
          Density Scale .5   (1, more dense, default .5)
          Buoyancy 9
    (1.2, default 1)   rise faster
          Dissipation .2     (.1, default 0)    dies off faster
         Noise 0  (2, default 0)

     Velocity
     Swirl 10
    (1.5, default 0)
     Noise 0       (1, can be higher, default 0)

     Turbulence
     Strength  .01
   (.1, default 0)

     Temperature
     Temperature Scale 
1    (default 1)
     Buoyancy 9 (1, default 3)
     Dissipation .1     (default .1)
     Turbulence  .1     (2, default .1)
     Noise 0     (1, default 0)





Fluid Shader Settings
You do not need to re-run the simulation for color changes.

Select the fluid
Shading
     Transparency .2
    (.4, color, default .25)
     Dropoff Shape  Cube  (default Cube)
     Edge Drop Off   .1     (0, This effects the height, default .05)


Color
     Selected Color .2
(default 1, white)


Incandescence
     Make the value of orange 15    (push the color selector over limit, default .7)
    
Incandescence Input   Temperature   (default Temperature)
     Input Bias  .1  (-.088, try various numbers, default 0)


Opacity
Make the ramp spiky, try different patterns.
Play with the Input Bias try .3  (this can make a huge difference)
fluid_opacity


Shading Quality
Quality  5
   (1, default 1)
Render Interpolator  smooth    (default linear)



Emitter Settings
Select the emitter, tab in the fluid or grouped under emitter object
Basic Emitter Attributes
     Emitter rate 100
     (default 100)
     Select Use Distance   (default not checked)
          Max Distance  3


     Fluid Attributes
          Density/Voxel/Sec   1
     (play with this, default 1)
          Heat/Voxel/Sec  2  (1, default 1)
          Fuel/Voxel/Sec    4   (1, default 1)
     Fluid Dropoff 2  (0, default 2)

     Keep Jitter checked     (maybe no difference)


Fluid Emission Turbulence
     Turbulence 1.2
  (1, default 0)



timesliderplay Play the animation simulation to see changes you have made.



Cache the Simulation
This can create some huge files,caching allows you to look at any frame in the sequence or batch render on multiple computers.

Select the fluid
nCache->Create New Cache->Maya Fluid
     Create a folder for cache  


2022.3 BUG
Batch Render bug, the first frame of any sequence has no fluid.


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© 1988-2022 34 years Jennifer Steinkamp