The Effects of an Impingement Surface and Quenching on the Structure of Laminar Premixed Flames

Abstract

To further current knowledge of how strain effects the structure of impinging flames and how these effects play a role in the surface modification of polymer films, two premixed impinging flames are modeled using the SPIN application of the CHEMK1N software: in Case 1, a methane - air flame, and in Case 2, a methane - air flame with 4.5% nitrous oxide additive. In Case 1, the quenching activates six reactions that consume O, H, and OH, while H₂O₂ and HO₂ are produced. In Case 2, the quenching and N₂O additive further consume the oxidizing species, while HNO, N₂O, NO, and NO₂ are produced in significant quantities through activation of six additional reactions. It is shown that the strain applied to the flame by impingement on the cool stagnation surface leads to secondary reactions in the quench zone that are directly responsible for the modification of the polymer film surface.

Keywords:

• Quenching
• NOx
• Premixed

Notes

∗To whom correspondence should be addressed