spray lab uc

8/7/2019 Spray Lab UC

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UC Spray and Combustion Research LaboratoryDr. San-Mou Jeng

Objective:

Research, Development and Testing of

Combustion and Spray Technologies forEnergy Generation and PropulsionDevices

Engineering and FAA Certification Testson Aircraft Powerplant

Laboratory:

Established in 1998Located at UC Center Hill Campus3,600 square ft Laboratory Space (to beexpanded for additional 2,000 square ft)

Air supplies:2 pps and 0.2 pps air compressors;12, 36, 74 and 192 KW air heater up to

900F

Fuel supplies:Liquid fuel up to 3,000 pph6 and 45 kW heater up to 450FAlternative fuels

Instruments:PIV, PDPA, LIF, Malvern Sizer, Optical andMechanical Spray Patternator,, FTIRspecies analyzer, high imaging system, solid

Y (mm)

Z(mm)

-30-20-10 0 10 20 30

20

40

60

80

100

120

140

160

180

200

220

240

260

280

300

320

165

160

155150

145

140

135

130

125

120

115

110

105

100

95

90

85

80

75

70

65

60

55

50

45

40

35

30

25

20

15

10

5

NOx(ppm)

Phi = 0.95

LDV Probe

Spray Image

NOx Concentration

Contours inside of a

combustor


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Future Water Tunnel for Combustor Aerodynamics Simulation

Vertical Spray Rig

Fire Test Cell

Horizontal 1 and Sub-atm Rig

Office and Control Room

Vertical 1 atm Rig

Fuel Choking Rig

High Pressure RigFuture Spray Lab.

UC Center Hill Combustion and Spray Research Laboratory


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Downward Spray Rig

CAPACITIES:

Central air compressor, fuel pump; fuel collection and recyclesystem

Computer controlled 3-d traverse system for optical probes(PDPA, PIV, Malvern, laser and high speed imaging system)

EXPERIENCE:

Droplet size and velocity distributions of both pressure swirland air-blast atomizers

More than 10 simplex and dual orifice atomizers More than 10 air-blast atomizers More than 5 spray nozzles for drug manufacturing.

Y(mm)

D32(m)

0 10 20 300

10

20

30

40

50

60

70

80

90

100

12mm16mm

20mm25mm

Sauter mean diameter distributionat different axial position( Y direction)

Spray Control by External ExcitationsDroplet Size (PDPA)Liquid Jet atomization

Air-blast Atomizer


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Horizontal Rig

CAPACITIES:

Central air compressor and fuel pump; central exhaust system or

directly to ambient or into a fuel collecting system

Air heater: Qmax=74 kW; Tmax= 900 F Computer controlled 3-d traverse system for optical and other probes Vacuum system for sub-atmospheric spray Fuel collecting system for non-reacting sprayEXPERIENCE:

Non-reacting spray for more than 10 hardware Ignition and fuel lean-blow-out for more than 10 hardware Burning modes, emissions and combustion dynamics for more than 10

hardware

Liquid jet in cross flows, heat transfer, shear flows,

Droplet Size at Sub-Atmospheric Pressure

Spray, Ignition, Fuel Lean-Blow-Out and Burning Mode


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H2/N2 and CH4 /N2 Premixed Flame at 1 atm.

0

5

10

15

20

2000 2500 3000 3500

con

centration(ppm)

Flame Temperature (F)

NO Concentration Vs FlameTemperature

0

5

10

15

20

25

2750 2800 2850 2900 2950 3000 3050

NO

centration(ppm)

Flame tempartaure (F)

NO Concentration Vs Flame Temperature

H2/N2 Combustion (T4 = 2,500 F) CH4/N2 Combustion (T4= 3,000 F)


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High Pressure Combustion Facility

.

CAPACITIES:

Central air compressor and fuel pump; exhausts directly

to ambient or into a fuel collecting system Air heater: Qmax=192 kW; Tmax= 800 F Computer controlled 3-d traverse system for optical andother probes

Health monitoring system and multi-video cameras High pressure shell-

16.8 inner diameter; 6 optical windows; 200 psia and 500 F limits; Air cooled chamber wall and window; Water spray cooled combustion exhausts

EXPERIENCE:

Emissions, spray, combustion dynamics, ignition,flashback and flame holding on

(a) 3 Jet A fueled swirl cup combustion,

(b) 2 premixed gas fueled (H2 and CH4) low NOx

burners, and

(c) 1 gas fueled single cup sector

Various liquid jet in cross flows


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Hot Fuel and Coking Rig

Endurance Tests on Fuel Nozzle at Extreme High Fuel and Air Temperatures

Solid Carbon Deposit Rate at Different Fuel Line Geometries

TEST SECTION

Low-angle expansion and contraction test section

High-angle expansion and contraction test section

0 10 20 30

Distance (cm)

0.0

0.1

0.1

0.2

0.2

0.3

0.3

0.4

0.4

Carbon

Deposition(mg/inch

2)

StraightTube

Tube with Low Angle E/C

Tube with High Angle E/C

Expansion/Contraction Sectio n

Deposit Rate

CAPACITIES:

45 kW hot oil heater; heat transfer system

from hot oil to jet fuel Resistance heater to raise tube walltemperature

2,000 PPH at 2,000 psi pump Solid carbon analyzer Long duration test

EXPERIENCE: FAA required (Minimum100 flight cyclehours) hot fuel and hot air demonstration on

more than 10 fuel nozzles

Various coking rate study

spray lab uc

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