On the Formation of Nitrogen Oxides During the Combustion of ...

4 Numerical Modeling and Simulation
288.0
K
Radial coordinate r
Droplet temperature Tl
287.0
286.0
285.0
284.0
t = 0.001 x 10 −3 s
t = 0.031 x 10 −3 s
t = 0.076 x 10 −3 s
t = 0.194 x 10 −3 s
t = 0.517 x 10 −3 s
283.0
0 x 10 −6 10 x 10 −6 20 x 10 −6 30 x 10 −6 40 x 10 −6 50 x 10 −6 m
Figure 4.5: Transient Temperature Increase Inside of a Droplet During Initial Droplet Heating
Phase. The initial droplet temperature is T l ,0 = 283.15K, and the gas phase
temperature is T ∞ = 473.15K.
360
K
Time t
Droplet surface temperature TS
340
320
300
T l,0 = 283 K
T l,0 = 303 K
T l,0 = 323 K
T l,0 = 343 K
T l,0 = 363 K
280
0.0 0.2 0.4 0.6 s
Figure 4.6: Evolution of Droplet Surface Temperature for Different Initial Droplet Temperatures.
The initial droplet temperature T l ,0 is varied, but the temperature of the
gas phase is kept constant at T ∞ = 473.15K.
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