Experimental Observation of Ordered States
of Cellular Flames

Table 1. Representative parameters at which the states in Figure 1 are observed. An asterisk indicates a pressure of 1/3 atm; all others are at 1/2 atm. The letter 1, indicates isobutane fuel, the letter P, propane fuel. The units of flow rate are lit/min and the units of flow velocity are cm/sec.

Figure 1 Total Flow Flow Velocity Equiv. Ratio Type of Fuel
Steady 5.40 3.55 2.08 I
5 cells* 4.52 2.97 2.21 I
6 cells* 4.81 3.16 2.21 I
1 inner 5.61 3.69 2.03 I
2 inner 6.49 4.27 1.85 P
3 inner 7.35 4.83 1.85 P
4 inner 8.20 5.39 1.85 P
5 inner 7.33 4.82 2.03 I
6 inner 8.04 5.29 2.06 I
7 inner 9.16 6.03 2.11 I
12 inner 10.10 6.64 2.09 I
transient 11.20 7.36 2.07 I

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