Injection of Single and Multiple Vortices in an Opposed-Jet Burner

Issue title: International Conference on Optical Technology and Image Processing in Fluid, Thermal, and Combustion Flow, Yokohama, Japan, December 1998

Article type: Research Article

Authors: Fiechtner, G.J.^; | Renard, P.-H. | Carter, C.D.^; | Gord, J.R. | Rolon, J.C.

Affiliations: Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson Air Force Base, OH 45433-7103, USA | Innovative Scientific Solutions, Inc., 2766 Indian Ripple Road, Dayton, OH 45440-3638, USA | Laboratoire dÉnergétique Moléculaire et Macroscopique, Combustion, École Centrale Paris and CNRS, Grande Voie des Vignes, 92295 Châtenay-Malabry Cedex, France

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.

Keywords: visualization, turbulence, vortex, flamelet, PLIF, PIV

Journal: Journal of Visualization, vol. 2, no. 3-4, pp. 331-342, 2000