Combustion Rate of Solid Carbon in the Axisymmetric Stagnation Flowfield Established over a Sphere and/or a Flat Plate

Figure 1

Combustion rate of the graphite hemisphere in oxidizer flow with the velocity gradient of 170 s⁻¹, as a function of the surface temperature: (a) for the O₂ mass-fraction 𝑌_O,∞=0.7 and the H₂O mass-fraction 𝑌_A,∞=0.0002, (b) for 𝑌_O,∞=0.7 and 𝑌_A,∞=0.0038. Data points are experimental [34, 41] and curves are calculated from the theory in [23]. The ignition surface-temperature 𝑇_s,ig is calculated, based on the ignition analysis [32].

(a)

(b)