Fuel and Oxidizer for the Flames

The flames in these experiments will use natural gas (methane, CH₄) as the fuel.

The oxidizer will be air, or an air and nitrogen mixture that will decrease the oxidizer volume density by introducing an inert material into the pre-mixed flame.

Nitrogen gas is the Inert material that may be added to the premixed flame, or used to dilute the fuel in the diffusion flame.