Numerical Simulation of Twin Impinging Jets in Tandem...
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Transcript of Numerical Simulation of Twin Impinging Jets in Tandem...
Lift fan
Intake duct
Engine
Roll nozzles
Warm air
Rear exhaust nozzle
Hot exhaust
Cold air
Impingementregion
Wall jetregion
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57
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Transmitting/receivingoptics
Bragg cellPhoto
multiplier
Opticalfibers
Dataanalysis
- r
T T T
∂ ∂ ∂ ∂ ∂ + µ + µ µ ∂ ∂ ∂ ∂ ∂
Optical
Impinging jets
North wall
Lateral wallPlane of
symmetry
South wall
(a) (b)
(c)
(d) (e)
Ground vortex
20
15
10
5
0
Y/D
-30 -20 -10 0 10 20 30
X/D
0-0.225-0.45-0.675-0.9
v
20
15
10
5
0
Y/D
-30 -20 -10 0 10 20 30
X/D
0-0.225-0.45-0.675-0.9
v
20
15
10
5
0
Y/D
-30 -20 -10 0 10 20 30
X/D
0-0.225-0.45-0.675-0.9
v
20
15
10
5
0
Y/D
X/D
-10 0 10
(a) (b)
(c) (d)
20
15
10
5
0
Y/D
20
15
10
5
0Y
/D
20
15
10
5
0
Y/D
X/D
-10 0 10
20
15[
10
5
0
Y/D
-30 -20 -10 0 10 20 30
X/D
0-0.225-0.45-0.675-0.9
v
20
15
10
5
0
Y/D
-30 -20 -10 0 10 20 30
X/D
0-0.225-0.45-0.675-0.9
v
Y/D
Y/D
20
15
10
5
0
-10 -5 0 5 10
Z/D
0.0750.0700.0600
0.075
0
0.0700.0600.0550.030
0.075
0
0.0700.0600.0550.030
0.0600.0550.0400
(a) (b)
(d)(c)
20
15
10
5
0
Y/D
20
15
10
5
0
20
15
10
5
0
Y/D
-10 -5 0 5 10
Z/D
Umean/Vj Umean/Vj
Umean/Vj Umean/Vj
0.075
0
0.0700.0600.0550.030
0.0750.070.060
0.0600.0550.0400
0.075
0
0.0700.0600.0550.030
20
15
10
5
0
Y/D
(a) (b)
(d)(c)
-10 -5 0 5 10
Z/D
20
15
10
5
0
Y/D
20
15
10
5
0
Y/D
20
15
10
5
0
Y/D
-10 -5 0 5 10
Z/D
Umean/VjUmean/Vj
Umean/Vj Umean/Vj
