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Research Papers: Gas Turbines: Combustion, Fuels, and Emissions

Development of a High-Pressure, High-Temperature, Optically Accessible Continuous-Flow Vessel for Fuel-Injection Experiments

[+] Author and Article Information
Kemar C. James

Department of Mechanical Engineering,
The University of Alabama,
Box 870276,
Tuscaloosa, AL 35487
e-mail: kcjames@crimson.ua.edu

Jin Wang

Department of Mechanical Engineering,
The University of Alabama,
Box 870276,
Tuscaloosa, AL 35487
e-mail: jwang111@crimson.ua.edu

Michael C. Maynard

Department of Mechanical Engineering,
The University of Alabama,
Box 870276,
Tuscaloosa, AL 35487
e-mail: michaeltpi@aol.com

Zackery B. Morris

Department of Mechanical Engineering,
The University of Alabama,
Box 870276,
Tuscaloosa, AL 35487
e-mail: zbmorris@crimson.ua.edu

Brian T. Fisher

Mem. ASME
Department of Mechanical Engineering,
The University of Alabama,
Box 870276,
Tuscaloosa, AL 35487
e-mail: bfisher@eng.ua.edu

1Corresponding author.

Contributed by the Coal, Biomass and Alternate Fuels Committee of ASME for publication in the JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received February 14, 2014; final manuscript received February 20, 2014; published online April 21, 2014. Editor: David Wisler.

J. Eng. Gas Turbines Power 136(9), 091512 (Apr 21, 2014) (7 pages) Paper No: GTP-14-1093; doi: 10.1115/1.4027191 History: Received February 14, 2014; Revised February 20, 2014

A vessel has been designed for nonreacting fuel-injection experiments with continuous flow of sweep gas at pressures up to 1380 kPa and temperatures up to 200 °C. Four orthogonal windows provide optical access for high-speed spray-visualization using a fast-pulsed light emitting diode (LED) and a high-speed camera. Initial experiments have been conducted to determine spray characteristics of n-heptane. At room conditions, liquid length and cone angle were 170 mm and 14.5 deg, respectively. With air flow in the chamber at 690 kPa and 100 °C, liquid length was considerably shorter at 92 mm and cone angle was wider at 16.5 deg.

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References

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Figures

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Fig. 1

Side view of overall vessel assembly

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Fig. 2

Isometric view of overall vessel assembly

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Fig. 3

Section view of primary vessel entry area

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Fig. 4

Schematic of gas-flow system

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Fig. 5

Schematic of electric-current profile to drive Bosch CRIN3 diesel injector

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Fig. 10

Cone angle versus time for n-heptane sprays, averaged over five injections. Dashed lines indicate the full spread of acquired data.

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Fig. 9

Liquid length versus time for n-heptane sprays, averaged over five injections. Dashed lines indicate the full spread of acquired data.

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Fig. 8

Illustration of liquid length and cone angle. Scales shown have units of centimeters.

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Fig. 7

Sample n-heptane spray image captured by high-speed spray-visualization system. Scales shown have units of centimeters.

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Fig. 6

Schematic of entire experimental setup, including vessel assembly, spray-visualization system, and control and data-acquisition systems

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