By Hammer Chen
This tutorial is requested by one of our users
who said that it was difficult to create a shockwave with Phoenix FD. Here, I
am going to explain the critical step that he might miss.
This is my scene setup: a Pflow (PF Source) in
the middle, spreading out particles horizontally; a PhoenixFD Fire / Smoke
Simulator; and a Phoenix FD Fire / Smoke Source (PHXSource) that picked up the
PF Source in the scene.
I like to use the PFlow in this case because
of the "Random horizontal” option, which allows you to emit particles
horizontally. This is perfect for making a shockwave.
However, if you pick this PFlow as your smoke
source and run a simulation with the default settings, you may end up like the
image above even if you set your particle speed very high.
The key step is to tick the Motion Vel. option
of your Phoenix fire/smoke source. Enabling it will allow the smoke to inherit
velocity from the PFlow.
In addition to enabling the Motion Vel., you
may want to crank up the value to get the right look of the shockwave.
One final word. To enhance the turbulence
details for the fast-moving particle source, you can increase the Simulator's
conservation quality and set the Steps Per Frame to 2.