http://www.cgcircuit.com/tutorial/explosion-with-pyrofx-series-2

In this series we gonna take a look how to create fire explosion. We first gonna create our source then we will bring it to dopnet. Then we gonna apply some forces to achieve the shape that we want. Finally we will cache it and apply some lightning and render it out. This is gonna be final preparation part to Series 3. In the next series we gonna take what we learn in first and second series and make some advanced explosion and film quality rendering.