To create this vortex effect, you first need to open a new comp in Adobe After Effects. Then create a new white solid. Go up to Effect, Simulation, CC Particle System II. The effects control box will open on the left side. Here is wear you can mess with the controls. Under the Physics tag, choose the vortex animation. All I did to make mine the way it is was change the Velocity and Birth Rate. Obviously there are many other controls to play with, but these are the ones I changed around.