Interactive Combustion in a Linear Array of 2D Laminar Isolated and Triple Burner Jets

Figure 8

Qualitative illustration of the effect of flame interaction: (a) isolated flames, (b) individual flames, (c) group flame, and (d) sheath flame.

(a) When 𝑙>𝑙₁, each burner operates as a single burner. Recall that 50% excess air is entrained for 2D burners fired with fuels of 𝑆𝑐=1.0 when l > 𝑙₁

(b) When 𝑥_int<𝐻, interaction effects the individual flame characteristics, 𝑙₂<𝑙<𝑙₁

(c) When 𝑙<𝑙₂, the air entrained is insufficient to burn the fuel from the central burner and a group flame is formed

(d) Sheath combustion—all of the required air must come from the far field