Untitled - Aerobib - Universidad Politécnica de Madrid

248 CHAPTER 10. AEROTHERMODYNAMIC FIELD OF A STABILIZED FLAME
y/h
1
0
A
B
C
U/U 0
−1
0
1 2 3 4 5 6 7 8 9 10
Figure 10.3: Velocity profiles for three cross-sections of the two-dimensional chamber (see
Fig. 10.2).
1.0
0.9
0.8
0.7
0.6
η / h
0.5
0.4
0.3
0.2
0.1
0.0
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
f
Figure 10.4: Flame width as a function of the burnt fraction for incompressible flow and
λ = 6.
2) Due to the pressure drop produced by combustion, the mass of gas accelerates
downstream of the chamber.
Fig. 10.4 shows the variation law of the flame width, referred to that of the
chamber, as a function of the burnt fraction.
Fig. 10.5 shows the fraction of pressure drop along the chamber, referred to
the total pressure drop between the inlet and outlet sections, as a function of the burnt
fraction.