carolyn fortson ken brezinsky, advising professor brad culbertson, project advisor
TRANSCRIPT
EXPERIMENTAL INVESTIGATION ON
THE COMBUSTION OF JP-8 JET FUEL
Carolyn Fortson
Ken Brezinsky, Advising Professor
Brad Culbertson, Project Advisor
Create computer model for chemical reactions in jet engine after burn
US Air Force concerned about jet fuel pollutants Combustion chemistry of JP-8 fuel unknown
Project
Motivation
Build System
Produce Flame
Identify Combustion Products
Sample Flame
Determine Concentrations
Validation
Counter Flow Flame
System
Burner Schematic
Build System
Produce Flame
Identify Combustion Products
Sample Flame
Determine Concentrations
Validation
Stabilizing Flame
Flow Rates:o Oxidizer Gaso Carrier Gaso Fuel
Ideal: 6% Oxygen
Actual: 29% Oxygen
Flow Rates:
Fuel Stream Oxidizer Stream
Fuel 15 mL/Hr X
Oxygen X 0.5 L/Min
Nitrogen 1.2 L/Min 1.2 L/Min
Build System
Produce Flame
Identify Combustion Products
Sample Flame
Determine Concentrations
Validation
Determining Concentrations
mV
min
Build System
Produce Flame
Identify Combustion Products
Sample Flame
Determine Concentrations
Validation
Determining Velocity and Stagnation Plane◦ LDV◦ Pitot Tube
Probes◦ Size◦ Shape
Sampling Platform◦ Horizontal Movement◦ Vertical Movement
Sampling
Sampling
Test Probes
A DCB310 μm 80 μm110 μm 6.35 mm
Sampling
5 10 15 20 25 30
Minutes
-1.4
0.0
2.5
5.0
7.5
10.0
12.5
mVolts c:\star\data\results\jp-8 flame\xylene_1037.runc:\star\data\results\jp-8 flame\xylene_1038.runc:\star\data\results\jp-8 flame\xylene_1039.runc:\star\data\results\jp-8 flame\xylene_1040.run
File:Channel:
Last recalc:
c:\star\data\results\jp-8 flame\xylene_1037.runMiddle = FID NA
X:Y:
0.9536 Minutes-0.0240 mVolts
Probe A (310 μm)Probe B (110 μm)Probe C (80 μm)Probe D (6.35 mm)
22.5 25.0 27.5 30.0 32.5
Minutes
-0.5
0.0
0.5
1.0
1.5
2.0
2.5
3.0
mVolts c:\star\data\results\jp-8 flame\xylene_1037.runc:\star\data\results\jp-8 flame\xylene_1038.runc:\star\data\results\jp-8 flame\xylene_1039.runc:\star\data\results\jp-8 flame\xylene_1040.run
File:Channel:
Last recalc:
c:\star\data\results\jp-8 flame\xylene_1037.runMiddle = FID NA
X:Y:
34.9642 Minutes-0.547 mVolts
SamplingProbe A (310 μm)Probe B (110 μm)Probe C (80 μm)Probe D (6.35 mm)
5 10 15 20 25 30
Minutes
-1.4
0.0
2.5
5.0
7.5
10.0
12.5
mVolts c:\star\data\results\jp-8 flame\xylene_1037.runc:\star\data\results\jp-8 flame\xylene_1038.runc:\star\data\results\jp-8 flame\xylene_1039.runc:\star\data\results\jp-8 flame\xylene_1040.run
File:Channel:
Last recalc:
c:\star\data\results\jp-8 flame\xylene_1037.runMiddle = FID NA
X:Y:
0.9536 Minutes-0.0240 mVolts
100%mV
min
78 %
5 10 15 20 25 30
Minutes
-1.4
0.0
2.5
5.0
7.5
10.0
12.5
mVolts c:\star\data\results\jp-8 flame\xylene_1050.runc:\star\data\results\jp-8 flame\xylene_1044.runc:\star\data\results\jp-8 flame\xylene_1051.runc:\star\data\results\jp-8 flame\xylene_1044.run
File:Channel:
Last recalc:
c:\star\data\results\jp-8 flame\xylene_1050.runMiddle = FID NA
X:Y:
7.6285 Minutes-0.0140 mVolts
mV
min
56 %
5 10 15 20 25 30
Minutes
-1.3
0.0
2.5
5.0
7.5
10.0
12.5
mVolts c:\star\data\results\jp-8 flame\xylene_1049.runc:\star\data\results\jp-8 flame\xylene_1046.runc:\star\data\results\jp-8 flame\xylene_1047.runc:\star\data\results\jp-8 flame\xylene_1048.run
File:Channel:
Last recalc:
c:\star\data\results\jp-8 flame\xylene_1049.runMiddle = FID NA
X:Y:
5.6022 Minutes-0.0540 mVolts
mV
min
34%
5 10 15 20 25 30
Minutes
-1.4
0.0
2.5
5.0
7.5
10.0
12.5
mVolts c:\star\data\results\jp-8 flame\xylene_1055.runc:\star\data\results\jp-8 flame\xylene_1052.runc:\star\data\results\jp-8 flame\xylene_1053.runc:\star\data\results\jp-8 flame\xylene_1054.run
File:Channel:
Last recalc:
c:\star\data\results\jp-8 flame\xylene_1055.runMiddle = FID NA
X:Y:
10.3701 Minutes-0.0380 mVolts
mV
min
5 10 15 20 25 30
Minutes
-3
0
5
10
15
20
25
mVolts c:\star\data\results\jp-8 flame\xylene_1057.runc:\star\data\results\jp-8 flame\xylene_1058.runc:\star\data\results\jp-8 flame\xylene_1059.runc:\star\data\results\jp-8 flame\xylene_1060.runc:\star\data\results\jp-8 flame\xylene_1061.runc:\star\data\results\jp-8 flame\xylene_1062.run
File:Channel:
Last recalc:
c:\star\data\results\jp-8 flame\xylene_1057.runMiddle = FID NA
X:Y:
0.9138 Minutes-0.0750 mVolts
Vertical Position
mV
min
Height (mm) from Top of Flame:1.19 2.383.574.765.957.14
Build System
Produce Flame
Identify Combustion Products
Sample Flame
Determine Concentrations
Validation
0.05 0.09 0.14 0.19 0.23 0.280
1
2
3
4
5
6
7
8
Concentration
0.05 0.09 0.14 0.19 0.23 0.280
0.01
0.02
0.03
0.04
0.05
0.06
0.05 0.09 0.14 0.19 0.23 0.280
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.00 0.05 0.10 0.15 0.20 0.25 0.300
0.010.020.030.040.050.060.070.080.090.1
Xylene
Phenylacetylene
Toluene
Benzene
0
1
2
3
4
5
6
7
8
0.05 0.09 0.14 0.19 0.23 0.28
0
0.01
0.02
0.03
0.04
0.05
0.06
0.05 0.09 0.14 0.19 0.23 0.28 0
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.05 0.09 0.14 0.19 0.23 0.28
00.010.020.030.040.050.060.070.080.09
0.1
0.00 0.05 0.10 0.15 0.20 0.25 0.30
Xylene
PhenylacetyleneToluene
Benzene
Mol
frac
tion
Mol
frac
tion
Mol
frac
tion
Mol
frac
tion
Oxidizer Distance (in.) Oxidizer Distance (in.)
Oxidizer Distance (in.)Oxidizer Distance (in.)
Concentration
Determine Velocity at Stagnation Plane
Run Mass Spec with a more suitable column
Suggestions for Future Work
Project Completion Sample Different Fuels Validate CFD
Acknowledgements Professor Brezinsky
Brad Culbertson
Megan Chirby
Financial support from the EEC-NSF Grant # 0755115