Aeronautical gas turbine ignition is still not well understood and its management and control are mandatory for new lean-burner designs. The fundamental aspects of swirled confined two-phase flow ignition are addressed in the present work. Two facilities enable the analysis of two characteristic phases of the process. The knowledge for ignition, acoustics and instabilities (KIAI)-Spray single-injector burner was investigated in terms of local flow properties, including the air velocity and droplet fuel (n-heptane) size-velocity characterization by phase Doppler anemometry (PDA), and the study of local equivalence ratio by means of planar laser-induced fluorescence (PLIF) on a tracer (toluene). The initial spark location inside the chamber is vital to ensure successful ignition. An ignition probability map was elaborated varying the location of a 532 nm laser-induced spark in the chamber under ultralean nominal conditions (ϕ = 0.61). The outer recirculation zone (ORZ) was found to be the best region for placing a spark and successfully igniting the mixture. A strong correlation was found between the ignition probability field and the airflow turbulent kinetic energy and velocity fields. Local equivalence ratio enhances the importance of the ORZ. Once a successful ignition is accomplished on one injector, the injector-to-injector flame propagation must be examined. High-speed visualization through two synchronized perpendicular cameras was applied on the KIAI-Spray linear multi-injector burner. Four different injector-to-injector distances and four fuels of different volatilities (n-heptane, n-decane, n-dodecane, and jet-A1 kerosene) were evaluated. Spray branches and interinjector regions changed with the interinjector distance. Two different flame propagation mechanisms were identified: the direct radial propagation and the arc propagation mode. Ignition delay times were modified with the injector-to-injector distance and with the different fuels.
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February 2018
Research-Article
Experimental Study of Aeronautical Ignition in a Swirled Confined Jet-Spray Burner
J. Marrero-Santiago,
J. Marrero-Santiago
CORIA-UMR6614,
Normandie Université,
CNRS,
INSA et Université de Rouen,
Saint Etienne du Rouvray 76800, France
e-mail: marreroj@coria.fr
Normandie Université,
CNRS,
INSA et Université de Rouen,
Saint Etienne du Rouvray 76800, France
e-mail: marreroj@coria.fr
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A. Verdier,
A. Verdier
CORIA-UMR6614,
Normandie Université,
CNRS,
INSA et Université de Rouen,
Saint Etienne du Rouvray 76800, France
Normandie Université,
CNRS,
INSA et Université de Rouen,
Saint Etienne du Rouvray 76800, France
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C. Brunet,
C. Brunet
CORIA-UMR6614,
Normandie Université,
CNRS,
INSA et Université de Rouen,
Saint Etienne du Rouvray 76800, France
Normandie Université,
CNRS,
INSA et Université de Rouen,
Saint Etienne du Rouvray 76800, France
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A. Vandel,
A. Vandel
CORIA-UMR6614,
Normandie Université,
CNRS,
INSA et Université de Rouen,
Saint Etienne du Rouvray 76800, France
Normandie Université,
CNRS,
INSA et Université de Rouen,
Saint Etienne du Rouvray 76800, France
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G. Godard,
G. Godard
CORIA-UMR6614,
Normandie Université,
CNRS,
INSA et Université de Rouen,
Saint Etienne du Rouvray 76800, France
Normandie Université,
CNRS,
INSA et Université de Rouen,
Saint Etienne du Rouvray 76800, France
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G. Cabot,
G. Cabot
CORIA-UMR6614,
Normandie Université,
CNRS,
INSA et Université de Rouen,
Saint Etienne du Rouvray 76800, France
Normandie Université,
CNRS,
INSA et Université de Rouen,
Saint Etienne du Rouvray 76800, France
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M. Boukhalfa,
M. Boukhalfa
CORIA-UMR6614,
Normandie Université,
CNRS,
INSA et Université de Rouen,
Saint Etienne du Rouvray 76800, France
Normandie Université,
CNRS,
INSA et Université de Rouen,
Saint Etienne du Rouvray 76800, France
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B. Renou
B. Renou
CORIA-UMR6614,
Normandie Université,
CNRS,
INSA et Université de Rouen,
Saint Etienne du Rouvray 76800, France
Normandie Université,
CNRS,
INSA et Université de Rouen,
Saint Etienne du Rouvray 76800, France
Search for other works by this author on:
J. Marrero-Santiago
CORIA-UMR6614,
Normandie Université,
CNRS,
INSA et Université de Rouen,
Saint Etienne du Rouvray 76800, France
e-mail: marreroj@coria.fr
Normandie Université,
CNRS,
INSA et Université de Rouen,
Saint Etienne du Rouvray 76800, France
e-mail: marreroj@coria.fr
A. Verdier
CORIA-UMR6614,
Normandie Université,
CNRS,
INSA et Université de Rouen,
Saint Etienne du Rouvray 76800, France
Normandie Université,
CNRS,
INSA et Université de Rouen,
Saint Etienne du Rouvray 76800, France
C. Brunet
CORIA-UMR6614,
Normandie Université,
CNRS,
INSA et Université de Rouen,
Saint Etienne du Rouvray 76800, France
Normandie Université,
CNRS,
INSA et Université de Rouen,
Saint Etienne du Rouvray 76800, France
A. Vandel
CORIA-UMR6614,
Normandie Université,
CNRS,
INSA et Université de Rouen,
Saint Etienne du Rouvray 76800, France
Normandie Université,
CNRS,
INSA et Université de Rouen,
Saint Etienne du Rouvray 76800, France
G. Godard
CORIA-UMR6614,
Normandie Université,
CNRS,
INSA et Université de Rouen,
Saint Etienne du Rouvray 76800, France
Normandie Université,
CNRS,
INSA et Université de Rouen,
Saint Etienne du Rouvray 76800, France
G. Cabot
CORIA-UMR6614,
Normandie Université,
CNRS,
INSA et Université de Rouen,
Saint Etienne du Rouvray 76800, France
Normandie Université,
CNRS,
INSA et Université de Rouen,
Saint Etienne du Rouvray 76800, France
M. Boukhalfa
CORIA-UMR6614,
Normandie Université,
CNRS,
INSA et Université de Rouen,
Saint Etienne du Rouvray 76800, France
Normandie Université,
CNRS,
INSA et Université de Rouen,
Saint Etienne du Rouvray 76800, France
B. Renou
CORIA-UMR6614,
Normandie Université,
CNRS,
INSA et Université de Rouen,
Saint Etienne du Rouvray 76800, France
Normandie Université,
CNRS,
INSA et Université de Rouen,
Saint Etienne du Rouvray 76800, France
1Corresponding author.
Contributed by the Combustion and Fuels Committee of ASME for publication in the JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received July 7, 2017; final manuscript received July 12, 2017; published online October 3, 2017. Editor: David Wisler.
J. Eng. Gas Turbines Power. Feb 2018, 140(2): 021502 (11 pages)
Published Online: October 3, 2017
Article history
Received:
July 7, 2017
Revised:
July 12, 2017
Citation
Marrero-Santiago, J., Verdier, A., Brunet, C., Vandel, A., Godard, G., Cabot, G., Boukhalfa, M., and Renou, B. (October 3, 2017). "Experimental Study of Aeronautical Ignition in a Swirled Confined Jet-Spray Burner." ASME. J. Eng. Gas Turbines Power. February 2018; 140(2): 021502. https://doi.org/10.1115/1.4037752
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