Abstract
An understanding of flame propagation needs the knowledge of the flame location and of the velocity field near the front. Time resolved laser Tomography coupled with high resolution cross correlation PIV has been developed. The method is based on the use of a copper vapor laser and a highspeed camera. The seeding level used for tomography provides an excellent resolution of the flame location and of the velocity vectors in the fresh gases. Experiment is conducted in a simulated engine where turbulence is controlled by means of a perforated grid. Interest is shown for the determination of laminar burning velocity and for the study of interaction between the flame front and the turbulent structures. Perspectives of stereoscopic PIV are also started on. It is shown that the existence of a normal component to the sheet plane of the velocity can lead to an erroneous flame velocity determination.
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Michel Trinité: He received a Master’s in physic from Rouen University, France, in 1965 and a Ph.D. in Energetic (State Doctorate) from the same University in 1971. In 1965, he joined CNRS (Centre National de la Recherche Scientifique) as assistant and he obtained the level of Head of Research in 1976. He is Director of the CORIA Laboratory (Rouen University) from 1986. His current research interests are Laser diagnostics in reacting flows, particularly turbulent flames such as combustion in piston engines. More recently, his attention has been focussed on PIV development applied to problems of unsteady large scales in flame propagation.
Bertrand Lecordier: He received a Master’s in physic from Rouen University in 1991, a post-graduate diploma in 1992 and a Ph.D. in energetic in 1997 from the same University. In 1998, he joined CNRS (Centre National de la Recherche Scientifique) as Research Scientist and he currently works at CORIA laboratory (Rouen University). His current research interests are in the field of reacting flows, particularly the study of interaction between an unsteady premixed flame and a turbulent flow field as well as the development of advanced laser diagnostics techniques for reacting flows.
Arnaud Lecerf: He received a Master’s in physic from Rouen University in 1994 and a post-graduate diploma in 1995. He is preparing a Ph.D. from 1995 supported by the local government (Haute Normandie). His Ph.D. research is centered on Stereoscopic PIV developed in the context of a CEC Program (Euro PIV). He works on applications of stereoscopic PIV to turbulent flows and flames studies. He develops also software to drive CCD cameras and Yag laser for specific PIV applications.
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Trinité, M., Lecordier, B. & Lecerf, A. Simultaneous development of time resolved laser tomography and PIV for flames propagation studies. J Vis 2, 245–256 (2000). https://doi.org/10.1007/BF03181441
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DOI: https://doi.org/10.1007/BF03181441