Large-eddy Simulation of Realistic Gas Turbine Combustors

300 (a)
200
(b)
Axial Velocity
200
100
0
Swirl Velocity
100
0
-100
-100
-2 -1.5 -1 -0.5 0 0.5 1 1.5 2
-200
-2 -1.5 -1 -0.5 0 0.5 1 1.5 2
Axial Velocity
200
150
100
50
0
-50
(c)
Swirl Velocity
150
100
50
0
-50
-100
(d)
-100
-2 -1.5 -1 -0.5 0 0.5 1 1.5 2
-150
-2 -1.5 -1 -0.5 0 0.5 1 1.5 2
200
(e)
100
(f)
Axial Velocity
100
0
Swirl Velocity
50
0
-50
-100
-2 -1.5 -1 -0.5 0 0.5 1 1.5 2
Normalized Radius
-100
-2 -1.5 -1 -0.5 0 0.5 1 1.5 2
Normalized Radius
Figure 8: Radial variation of normalized mean axial and swirl velocities at different axial locations
for the PW injector patternation study: ◦ experimental data [25], LES, Unsteady RANS
using k − ɛ model: (a-b) x = 0.4, (c-d) x = 1.1, (e-f) x = 2.1. Here x is the normalized distance
from the injector wall.
34