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Injection of single and multiple vortices in an opposed-jet burner

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Abstract

A thorough understanding of turbulent reacting flows is essential to the continued development of practical combustion systems. Combustor codes can be validated using data such as those generated in this study of a vortex interacting with a nonpremixed, opposed-jet hydrogen-air flame. When experimental results are compared with model predictions, the underlying flowfield must be matched carefully. Since the vortex-injection process used in the present experiments can result in many types of vortices, including multiple vortices, restrictions on the experimental operation of the burner are required as well as careful vortex characterization. Vortex-characterization data are acquired using digital, two-color particle-image velocimetry (PIV), and the hydroxyl (OH) layer produced by the flame is imaged using planar laser-induced fluorescence (PLIF). The PIV and OH PLIF measurements are performed simultaneously. Good agreement with previous numerical-modeling predictions is obtained when experiments and computations are performed using similar vortex conditions.

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  1. Air Force Research Laboratory, Propulsion Directorate, 45433-7103, Wright-Patterson Air Force Base, OH, USA

    Fiechtner G. J., Carter C. D. & Gord J. R.

  2. Innovative Scientific Solutions, Inc., 2766 Indian Ripple Road, 45440-3638, Dayton, OH, USA

    Fiechtner G. J. & Carter C. D.

  3. Laboratoire d’Énergétique Moléculaire et Macroscopique, Combustion, École Centrale Paris and CNRS, Grande Voie des Vignes, 92295, Châtenay-Malabry Cedex, France

    Renard P. -H. & Rolon J. C.

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Gregory J. Fiechtner: He is a senior mechanical engineer at Innovative Scientific Solutions, Inc. He received his B.S. in Mechanical Engineering from the University of Nebraska (Lincoln) in 1986 and both his M.S. in Mechanical Engineering (1989) and his Ph.D. in Mechanical Engineering (1992) from Purdue University. He pursued postdoctoral studies at the University of Colorado and the Colorado School of Mines from 1992 to 1994 and at Sandia National Laboratories (Livermore) from 1994 to 1996. His research experience involves measurements and modeling of combustion, including the development and application of advanced laser-based diagnostic techniques for the characterization and improvement of gas-turbine-engine combustion. He is an active member of the American Institute of Aeronautics and Astronautics, the American Society of Mechanical Engineers, the Institute of Electrical and Electronics Engineers, the Optical Society of America, and the Combustion Institute. Dr. Fiechtner has 105 publications and presentations in the areas of combustion diagnostics, fluid mechanics, lasers, and instrumentation.

Paul-Henri Renard: He received his M.Sc. degree in Mechanical Engineering in 1995 from École Centrale Nantes and is completing requirements for his Ph.D. in combustion sciences at École Centrale Paris. He worked one year at ONERA (National Aerospace Research Agency) in the field of spectroscopic numerical simulation and at the United States Air Force Research Laboratory in 1998.

Campbell D. Carter: He has been a research scientist at Innovative Scientific Solutions, Inc., since 1994 and received his B.S. in Mechanical Engineering from the University of Texas at Austin, his M.S. in Mechanical Engineering from the University of California, Berkeley, and his Ph.D. in Mechanical Engineering from Purdue University. He then served as a postdoctoral researcher at the Combustion Research Facility, Sandia National Laboratories (Livermore). His interests include the application and development of advanced laser diagnostics for reacting flows and combustors, a field in which he has published over 20 archival journal articles and more than 70 additional papers and presentations. Dr. Carter is a member of the American Institute of Aeronautics and Astronautics and serves on the Advanced Measurements Technology Technical Committee; he is also an active member of the Combustion Institute.

James R. Gord: He is a senior research chemist with the Propulsion Sciences and Advanced Concepts Division of the Air Force Research Laboratory’s Propulsion Directorate and received his B.S. in Chemistry from Miami University in 1986 and his Ph.D. in Analytical Chemistry from Purdue University in 1990. He pursued postdoctoral studies at the Joint Institute for Laboratory Astrophysics from 1990 to 1991 and then joined the Air Force research team, first as an on-site contractor at Wright-Patterson Air Force Base with Systems Research Laboratories, Inc., and then as a civil servant in his current position. He directs the development and application of advanced laser-based diagnostic techniques for the characterization and improvement of gas-turbine-engine combustion and thermally stable aviation fuels. He is a member of the American Chemical Society, the American Institute of Physics, the Combustion Institute, the Optical Society of America, Phi Beta Kappa, Sigma Xi, and the Society for Applied Spectroscopy.

Juan Carlos Rolon: He has been on the teaching staff at École Centrale Paris since 1982 and has been a professor at that institution since 1989. He teaches fluid mechanics, combustion, signal processing, control systems, and optical diagnostics. He earned his M.S. in Theoretical Physics from the University of Moscow in 1970, his D.E.A. in Fluid Mechanics from the University of Paris in 1973, and his Ph.D. from École Centrale Paris in 1988. He was a research engineer at École Centrale Paris from 1973 to 1975 and an invited research scientist at CNRS for two years. Before his return to École Centrale, he was a Professor of Physics at the École Normale Superieure in Oran (Algeria) from 1976 to 1982. He leads a team conducting research in the area of flame structures and optical diagnostics. His current interests lie in flame spectroscopy, radical imaging, combinations of imaging and digital processing, light scattering, laser-induced fluorescence, and laser Doppler velocimetry. He has published more than 30 papers in these areas. His research has been supported by governmental agencies and industry, and he was the Principal Investigator on three European contracts. He was recently selected by the European Office of Research and Development to be an invited professor; he was selected as a leading speaker for the Window on Science program of the United States Air Force Research Laboaratory. He was awarded by the Grand Prix of the French Academy of Sciences in 1997. During the same year, along with Dr. D. Thevenin and P.-H. Renard, he received the first award from the Seymour Cray competition on industrial applications of intensive computing.

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Fiechtner, G.J., Renard, P.H., Carter, C.D. et al. Injection of single and multiple vortices in an opposed-jet burner. J Vis 2, 331–342 (2000). https://doi.org/10.1007/BF03181448

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