Iutam Symposium on Combustion in Supersonic Flows: Proceedings of the Iutam Symposium Held in Poitiers, France, 2-6 October 1995

ISBN-13: 9789401062855 / Angielski / Miękka / 2012 / 412 str.

M. Champion; B. Deshaies

Opis

This volume contains selected presentations of the IUTAM Symposium on Combustion in Supersonic Flows' held in Poitiers at the Ecole Nationale Superieure de Mecanique et d'Aerotechnique (ENSMA) from 2 to 6 October 1995. The presentations focus on four main topics related to combustion in supersonic streams and practical issues relevant to the development of new propulsion systems: fundamental studies of premixed and unpremixed combustion, fluid dynamics aspects of supersonic combustion, practical systems including Scramjet, Ramaccelerators and Pulsed Detonation Engines, and the application of detonation to propulsion. Important progress has been made in the understanding of local mechanisms which allow combustion to be stabilized in a supersonic flow; in particular, various mechanisms controlled by mixing, chemical kinetics, viscous heating and shock waves are now well identified. Despite the difficulty of developing experimental work on supersonic combustion, a good set of experimental data is now available, allowing validation of theoretical analysis and models. The main aspects of modelling of turbulent combustion in high speed flows were discussed, including the influence of turbulent fluctuations on the chemistry-controlled phase of combustion and the applicability of flamelet models to high speed flows. The full range of numerical approaches is covered including Direct Numerical Simulation, Large Eddy Simulation, k-epsilon and shock tracking methods. A considerable effort has been made to generalize these methods to the treatment of supersonic reactive flows and to develop new numerical methods taking into account the most recent theoretical work and a better understanding of the underlying physics."

Spis treści

Observations Concerning Supersonic Combustion; P.A. Libby. I: Premixed and Unpremixed Combustion in Supersonic Flows. Some Generic Problems Related to Combustion of Hydrogen and Air in Supersonic Flows; B. Deshaies, et al. Development of a Three-Dimensional Code to Investigate Supersonic Combustion Problems; U. Riedel, D. Thévenin. Influence of Turbulent Fluctuations on the Induction Period of Hydrogen-Air Combustion Reaction; V.V. Vlasenko, V.A. Sabel'nikov. Shock Induced Combustion over a Rectangular Ramp; C.J. Sands, et al. Optical Measurements of Hydrogen Mixing in Supersonic Airflows; F. Brellochs, et al. A New L.E.S. Approach to Simulate Cheng's Experiment; G. Billet. Flame-Holding Behind a Wedge by Incident Shock Waves; T. Fujimori, et al. Effects of Laminar Flamelet Structures on Supersonic Turbulent Combustion; L.L. Zheng, K.N.C. Bray. Numerical Study of Autoignition and Combustion in Supersonic Hydrogen-Air Mixing Layer; A. Stoukov, et al. Experiments on the Flame-Holding Mechanism of a Newly Devised Strut in Supersonic Airflow; M. Uchiumi, et al. II: Practical Systems: Scramjets. An Industrial Point of View on Scramjet Combustor Design; A. Chevalier, et al. Shock Tube Investigations of H2 Combustion in a High Temperature Supersonic Air Flow (Scramjet); G. Smeets, C. Quenett. III: Heterogeneous Combustion. Detonation of the Gas Mixtures with Inert Solid Particles; A.V. Fedorov, V.M. Fomin. Catalytic Combustion in a Cold Supersonic Flow of Hydrogen-Air Premixture; M. Bellenoue, et al. IV. Practical Systems: Ramaccelerators and PDWA. Pulsed Detonation Engines: Key Issues; S. Eidelman, et al. The Ram Accelerator: Perspectives andExperimental Results already Achieved. G. Smeets. Numerical Simulations of Unstart Phenomenon in Ramac Device; M.H. Lefebvre, et al. The Effects of Two-Phase Combustion in Ram Accelerator; R. Saurel, et al. The 30 mm-Caliber Scram Accelerator Ramac 30 of ISL; S. Seiler, et al. Expansion Tube Experiments for the Investigation of Ram-Accelerator-Related Phenomena; J. Srulijès, et al. The PDWA Concept for Hypersonic Propulsion; J.-L. Cambier, H.G. Adelman. V. Fluid- Dynamic Aspects of Supersonic Combustion. Mixing Enhancement by Normal Gas Injection in Supersonic Mixing Layer (LDV Investigation of Turbulence Phenomena); T. Arai, et al. Properties of Energetic Scales in a Supersonic Mixing Layer; P. Dupont, et al. Numerical Simulations of Shock-Turbulence Interactions; G. Erlebacher, et al. LDV Investigation of Turbulence Phenomena in Multiple Shock Wave / Turbulent Boundary Layer Interactions; H. Sugiyama, et al. VI. Applications of Detonation to Propulsion. Galloping Detonations; P. Clavin. Numerical Simulations of a Marginal Detonation: Wave Velocities and Transverse Wave Structure; M.H. Lefebvre, et al. Direct Initiation of Gaseous Detonations by Interacting Supersonic Jets; O.V. Achasov, et al. Onset of Oblique Hydrogen-Air Detonations Enhanced by a Turbulent Jet; C. Viguier, et al. Dynamics of Curved Detonation Front and Critical Conditions for Detonation Initiations; L. He. Initiation of Detonation by Mixing of Supersonic Acetylene and Oxygen Jets; O.V. Achasov, S.A. Labuda.