In this section, you can make your Emitter emit fire, smoke, or both. You can set different parameters such as initial temperature, density, fuel, initial speed or even add "pressure" to your explosion.
In the Flow Animation section, you will be able to animate almost all the values you have in the Flow Emitters module. This brings a lot of possibilities to the configuration of the Flow of your emitter, being able to "activate" and "deactivate" many of its parameters. For example, you could indicate when you want an Emitter to have initial velocity, turn off its density little by little, or if your Emitter has particles, animate the size of the particles.
Pressure = 0
Pressure = 10
Pressure = 25