202715.fig.002a
(a) 0% PA
202715.fig.002b
(b) 20% PA
202715.fig.002c
(c) 40% PA
202715.fig.002d
(d) 50% PA
202715.fig.002e
(e) 60% PA
202715.fig.002f
(f) 70% PA
202715.fig.002g
(g) 80% PA
202715.fig.002h
(h) 83% PA
202715.fig.002i
(i) 86% PA
Figure 2: Flame images: (a) 0% PA, (b) 20% PA, (c) 40% PA, (d) 50% PA, (e) 60% PA, (f) 70% PA, (g) 80% PA, (h) 83% PA, and (i) 86% PA. Left, middle, and right photos in each indicates 100% SA, 150% SA, and 200% SA, respectively.