Etude de la combustion de gaz de synthèse issus d'un processus de ...

Chapter 4
5 ms 10 ms 15 ms
20 ms 25 ms 30 ms
tel-00623090, version 1 - 13 Sep 2011
35 ms 40 ms 45 ms
50 ms 55 ms 60 ms
65 ms 70 ms 75 ms
80 ms 85 ms 90 ms
Figure 4.15 – schlieren flame images of fluidized bed syngas-air mixture at 3.0 bar.
The hydrodynamic theory of Darrieus (1938) and Landau (1944) shows that, in the limit
of an infinitely thin flame propagating with a constant velocity, the flame is unstable to
disturbances of all wavelengths. The growth rate is proportional to the density jump
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