|Statement||(by) A.F. Belyaev...(et al.) ; translated by R. Kondor.|
|Series||Israel program for scientific translations|
|Contributions||Belyaev, A. F., Academy of Sciences of the USSR. Institute of Chemical Physics.|
Deflagration-to-detonation transition via the distributed photo ignition of carbon nanotubes suspended in fuel/oxidizer mixtures Combustion and Flame, Vol. , No. 3 COMPUTATIONAL STUDY OF DEFLAGRATION TO DETONATION TRANSITION IN A STRAIGHT DUCT: EFFECT OF ENERGY RELEASECited by: Purchase Detonation and Two-Phase Flow - 1st Edition. Print Book & E-Book. ISBN , Book Edition: 1. The transition from a deflagration to a detonation (DDT) in gas dynamics is investigated through the process of a deflagration with a finite width flame overtaken by a shock. The problem is formulated as a free boundary value problem in an angular domain with a strong detonation Cited by: 1. THE DEFLAGRATION-TO-DETONATION TRANSITION In considering a complete treatment of reactive two-phase flow (total nonequilibrium), a closure problem exists. This problem results from including the volume fraction of a phase as an independent kinematic variable and can be seen by comparing the set of.
Experiments on transition from deflagration to detonation for H2-air-steam mixtures (at oC initial temperature and kPa initial pressure) were performed in a 28 cm diameter, m-long, combustion duct. A flame was created by igniting the gas mixture with a weak electrical spark (~1 mJ). A SEPARATED TWO-PHASE FLOW ANALYSIS TO STUDY DEFLAGRATION-TO-DETONATION TRANSITION (DDT) IN GRANULATED PROPELLANT* HERMAN KRIER AND JAMES A. KEZERLE Department of Aeronautical and Astronautical Engineering, University of Illinois at Urbana-Champaign, lllinois A two-phase reactive flow model is derived and solutions are applied to the . In general, a detonation wave can be obtained via the process of a transition from a deflagration wave (DDT, i.e., deflagration to detonation transition) or from the decay of a strong blast wave generated by a powerful ignition source (i.e., direct initiation). Direct initiation is a relatively well-defined phenomenon characterized by a critical energy required for the initiation of a. In some forms of supernovae and chemical explosions, a flame moving at subsonic speeds (deflagration) spontaneously evolves into one driven by a supersonic shock (detonation), vastly increasing the power output. The mechanism of this deflagration-to-detonation transition (DDT) is poorly understood. Poludnenko et al. developed an analytical model to describe DDTs, then tested it .
American Institute of Aeronautics and Astronautics Sunrise Valley Drive, Suite Reston, VA Simulation of the Transition from Deflagration to Detonation Auto-Ignition is a phenomenon that occurs in many practical combustion processes (engine knock, ignition in rapid compression machines or shock tubes etc). The deflagration-to-detonation transition (DDT) in hot, thermally damaged HMX (δ-phase) and HMX-based polymer-bonded explosives (PBX , LX, LX and PBX ) differs in some respects from what has been observed in similar tests (DDT tube experiments) with room temperature granular provide streak images with other observations and demonstrate . The two-phase mixture model developed by Baer and Nunziato (BN) to study the deflagration-to-detonation transition (DDT) in granular explosives is critically reviewed. The continuum-mixture theory foundation of the model is examined, with particular attention paid to the manner in which its constitutive functions are formulated. Connections between the mechanical and energetic phenomena.