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Understanding Particles and Dynamics in Maya—Part 16

Preview


1. Creating a Fluid Dynamics Container

Step 1

Open Maya.

Open Maya
Open Maya

Step 2

Jump in Dynamics
mode. Go to Fluid Effects > Create 3D Container and draw a 3D fluid
container in the view port as shown in the following image.

Dynamics mode
Dynamics mode

Step 3

Go to fluidShape1 attribute and set the value of Base
Resolution
to 50. Set the values of Grid Size to 10
each.

Base Resolution
Base Resolution

Step 4

Go to Container
Properties
. Set the options of Boundary X to None, Boundary
Y
to –Y Side and Boundary Z to None.

Container Properties
Container Properties

Step 5

Change the values of Temperature
and Fuel to Dynamic Grid.

Temperature and Fuel
Temperature and Fuel

Step 6

Go to fluidShape1 attribute
and under Display rollout, set the Boundary Draw option to Bounding
box
.

Display rollout
Display rollout

Step 7

Under Dynamic
Simulation
rollout, set the High Detail Solve option to All Grids
and set the value of Solver Quality to 40.

Dynamic Simulation
Dynamic Simulation

Step 8

Go to Auto Resize
to turn on Auto Resize option and turn off Resize Closed Boundaries
and Resize in Substeps options. Set the values of Auto Resize
Threshold
to 0.002 and Auto Resize Margin to 5.

 Auto Resize
Auto Resize

2. Creating Emitter

Step 1

With the fluid container
selected, go to Fluid Effects > Add/ Edit Contents > Emitter and
click on the option box.

Fluid Effects  Add Edit Contents  Emitter
Fluid Effects > Add/ Edit Contents > Emitter

Step 2

In the Emitter
Options
window, set the Emitter type to Volume and Emitter
Shape
to Sphere. Click on Apply and Close

Emitter Options
Emitter Options

Step 3

A spherical emitter icon
appears in the view port. Put the emitter icon on the grid.

A spherical emitter icon appears
A spherical emitter icon appears

3. Attribute Keyframes

Step 1

Animate the
value of Scale. With the emitter selected, set the value of Scale to
1
at the first frame and click on Set Key. Go to the fifth frame and set the value to 3. 

Go to the sixth frame and set
the value back to 0.

Scale
Scale

Step 2

With the fluid container
selected, set the value of Density/ Voxel/Sec to 50 at the first frame. Keep the same value at the tenth frame also. 

At the eleventh frame, set the value to 0

Density Voxel Sec
Density/ Voxel/ Sec

Step 3

Set the value of Heat/
Voxel/ Sec
to 100 at the first frame. Keep the same value at the tenth frame also. 

At the eleventh frame, set the value to 0

Heat Voxel Sec
Heat/ Voxel/ Sec

Step 4

Set the value of Fuel/Voxel/Sec to 10 at the first frame. Keep the same value at the fifth frame also. 

At the sixth frame, set the value to 0

Fuel Voxel Sec
Fuel/ Voxel/ Sec

Step 5

Go to Fluid Emission
Turbulence
rollout and set the values of Turbulence and Detail
Turbulence
to 1.

Fluid Emission Turbulence
Fluid Emission Turbulence
Step 6

Go to Lighting
rollout and turn on Self Shadow option set the value of Shadow
Opacity
to 1.

Self Shadow option
Self Shadow option

Step 7

Go to Field >
Volume Axis
and draw an icon in the view port.

Field  Volume Axis
Field > Volume Axis

Step 8

Set the value of Volume
Shape
to Sphere.

 Volume Shape
Volume Shape 

Step 9

Go to Volume Speed
Attributes
rollout and set the values of Away From Center to 50,
Along Axis to 15, Turbulence to 5 and Detail
Turbulence
to 1.

Volume Speed Attributes
Volume Speed Attributes

Step 10

Go to Window >
Relationship Editors > Dynamic Relationships
.

Window  Relationship Editors  Dynamic Relationships
Window > Relationship Editors > Dynamic Relationships

Step 11

In the Dynamic
Relationships Editor
, select fluid1 and volumeAxisField1

Close the window.

Dynamic Relationships Editor
Dynamic Relationships Editor

Step 12

Go to Content Details
> Density
rollout and set the value of Density Scale to 1,
Dissipation to 0.100, Diffusion to 0.025 and
Noise
to 0.010. 

Content Details  Density
Content Details > Density

Step 13

Go to Velocity rollout and set the value of Swirl
to 15.

Velocity rollout
Velocity rollout

Step 14

Go to Turbulence
rollout and set the values of Strength to 0.025 and Frequency
and Speed to 0.5.

Turbulence rollout
Turbulence rollout

Step 15

Go to Temperature
rollout and set the values of Buoyancy to 12, Dissipation
to 0.5 and Turbulence to 5.

Temperature
Temperature

Step 16

Go to Fuel
rollout and set the values of Reaction Speed to 0.005, Air/
Fuel Ratio
to 21, Ignition Temperature to 1 and Light
Released
to 1.

Reaction Speed
Reaction Speed

Step 17

Go to Shading > Color
rollout and set the color as shown in the following image. Set the values of Color
Input
to Density and Input Bias to 1.

Shading  Color
Shading > Color

Step 18

Go to Opacity rollout
and set the Opacity value as shown in the following image.

Opacity rollout
Opacity rollout

Step 19

Hit the Play button for explosion simulation. Render the
frame and you will see a high detailed rendered frame of explosion as shown in
the following image.

Play button
Play button

Conclusion

In the next part of the series, I’ll show you how to create thick and volumetric clouds using fluid dynamics in Maya