Houdini Part 3: Pyro FX - Fire

So seeing as I had previously done smoke in Houdini, I thought it was about time I made its counterpart - fire. The emitter was created as an animated sphere with a mountain node attached. The mountain's offset was controlled with the expression $FF/20 on all 3 axis. The actual fire was created using the 'smokeless flames' option in Houdini with the colour manipulated as so:

See you tomorrow for some more experiments!