Fireball shelf tool

Creates a large scale explosion that expands outward and rises quickly.

On this page

Important Nodes
Learning from this example

This shelf tool sets up a sparse pyro simulation of a fireball style explosion. This setup is simple in the sense that it doesn’t have many nodes, but don’t let that fool you. This is a good setup to study if you want to get better at building explosions.

Pyro simulation in the viewport. Color space: ACES, Voxels Size: 0.1.

Pyro simulation rendered with Karma. Color space: ACES, Voxels Size: 0.1.

This shelf tool sets up a sparse pyro simulation of a fireball type explosion.

Important Nodes ¶

pyroburstsource1

The fireball is sourced from a single pyroburstsource1. This node has the biggest impact on the overall shape and speed of the fireball.

Learning from this example ¶

To...	Do this
Vary explosion shape	Change the Shape Offset parameter in pyroburstsource1 to easily vary the shape of the simulation.
Adjust initial expansion	This setup sources `burn` into two different simulation fields. Burn is commonly sourced into the flame field, which is happening here. It is also sourced into the divergence field. This allows for the initial powerful expansion, followed by the quick upward movement. This can be found in the Sourcing tab of pyrosolver1.
Adjust expansion from flame	Flame is also adding divergence into the simulation within a specific range, which helps create a more subtle expanding and rolling movement as the fireball moves upward. Controls for this are located in pyrosolver1 under the Shape/Flame Expansion tab.

Fireball shelf tool

Important Nodes ¶

Learning from this example ¶

Shelf tools

Using the shelf ¶

Technical ¶