integration of cfd and low-order models for combustion ... - IWR

|
2.84 x 104
mean momentum flux
2.835
2.83
2.825
2.82
2.815
2.81
1D analysis
CFD result
mean velocity
65
60
55
50
45
40
1D analysis
CFD result
2.805
35
2.8
0 0.02 0.04 0.06 0.08 0.1 0.12 0.14 0.16 0.18 0.2
axial coordinate x(m)
Figure 9. The mean momentum flux, where the solid lines indicate
the result from a one-dimensional analysis and dash lines indicate
that from the CFD calculation.
8 x 106
30
25
Figure 12.
20
0 0.02 0.04 0.06 0.08 0.1 0.12 0.14 0.16 0.18 0.2 0.22
axial coordinate x(m)
Mean velocity, where the solid lines indicate the result
from a one-dimensional analysis and dash lines indicate that from
the CFD calculation.
7
6
1D analysis
CFD result
mean energy flux
5
4
1.8
1.6
3
1.4
2
1.2
1
Figure 10.
1
0 0.02 0.04 0.06 0.08 0.1 0.12 0.14 0.16 0.18 0.2
axial coordinate x(m)
The mean energy flux, where the solid lines indicate the
result from a one-dimensional analysis and dash lines indicate that
from the CFD calculation.
| J 1
′
0.8
0.6
0.4
0.2
0
0 0.02 0.04 0.06 0.08 0.1 0.12 0.14 0.16 0.18 0.2 0.22
850
800
1D analysis
CFD result
0
−20
750
−40
700
] deg.
−60
mean temperature
650
600
angle [ J 1
′
−80
−100
550
−120
500
−140
0 0.02 0.04 0.06 0.08 0.1 0.12 0.14 0.16 0.18 0.2 0.22
450
Figure 11.
400
0 0.02 0.04 0.06 0.08 0.1 0.12 0.14 0.16 0.18 0.2 0.22
axial coordinate x(m)
Mean temperature, where the solid lines indicate the
result from a one-dimensional analysis and dash lines indicate that
from the CFD calculation.
Figure 13. Magnitude and phase of the transfer function between
shape factor J 1 and air flow rate through the atomizer at a
frequency 50 Hz.