Creates a large explosion rising from the selected object.
The resolution (Divisions) of the mushroom cloud’s pyro box is low to begin with. As you play with the parameters and start to get the motion you want, increase the Divisions to get more detail.
recyclevorticlesnode adds more roiling motion to the simulation.
pyrosolvernode, Simulation tab, Combustion sub-tab
Use the Soot smoke rate to control the amount of secondary smoke.
Use the Heat output parameter to make the plume rise faster.
Use the Gas released parameter to influence the size of the plume.