This R&D uses Houdini’s particle and simulation systems to develop the core structure of a dragon fire effect, particularly the long, tubular shape of the flame.

The final effect would normally require additional layers and secondary detail, but in this test I focused on building the main simulation structure and rendered a single frame to demonstrate the foundation of the setup.

This work is based on the type of core setup used for dragon fire in the feature film Damsel, with my own modifications and improvements. I recreated the system independently because the effect is more technically challenging than it may first appear, especially when trying to make the setup more flexible and procedural.

The main simulation acts as the primary source of motion and data for the rest of the effect. Additional elements such as secondary fire detail, molten or lava-like components, fluid particles, embers, and other layers can all be generated from this core simulation rather than being built as completely separate simulations.

This creates a more consistent workflow because all secondary elements inherit the same underlying motion, speed, direction, and overall behavior.

It also gives supervisors a clearer representation of the final fire motion early in the process. Once the core behavior is approved, the additional layers can be generated procedurally from the same source data.

For recurring character-specific effects such as dragon fire, this type of workflow benefits from a high level of automation. Instead of rebuilding or manually adjusting every shot