Gaseous detonation

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August undefined, 2024

WebDetonation (from Latin detonare 'to thunder down/forth' [1]) is a type of combustion involving a supersonic exothermic front accelerating through a medium that eventually drives a shock front propagating directly in front … WebThe concept of a shock tunnel with gaseous detonation driver is discussed. A detonation driver presents an alternative to a free-piston driver because comparable values of high enthalpy can be attained, however, without the fast movement of a heavy piston. Wave diagrams, pressure and temperature distributions are presented. Finally, first …

Dynamic Parameters of Gaseous Detonations - Annual Reviews

WebSep 2, 1998 · The instabilities have a large transverse length but oscillate and evolve on a short time, comparable with the transit time of a fluid particle through the detonation. The coupling with the acoustic waves is a stabilizing factor, dominant at short wavelengths for assuring a suitably large ratio of transverse wavelength to detonation thickness ... WebAug 1, 2024 · The gaseous detonation modeling was achieved through a user-defined burn approach. According to the Chapman-Jouguet (CJ) theory, the detonation travels at a steady speed and the chemical reaction completes itself in the thin layer of detonation front. In the computation, as the detonation front passed several elements, the elements were ... boehringer animal health products

Dynamic Parameters of Gaseous Detonations - Annual Reviews

WebThe Euler-Lagrangian method was used to describe the gas–liquid two-phase flow phenomenon. The random trajectory model was used to track the droplet movement process, and the infinite thermal conductivity model was used to describe the evaporation process. ... Using preheated kerosene as the fuel of the rotating detonation scramjet can ... WebJan 1, 2009 · 1. Introduction. Fill a long tube with a fuel–oxygen mixture, ignite it with a spark at one end, and you are likely to observe a supersonic combustion wave or … WebThe paper reviews recent progress in the field of gaseous detonations, with sections on shock diffraction and reflection, the transition to detonation, hybrid, spherically … boehringer assistance program

Initiation of Gaseous Detonation - DeepDyve

A Simple Model for Rotating Detonation Rocket Engine …

WebInternal pressure loads due to gaseous detonations. Proceedings of the Royal Society of London. Series A: Mathematical and Physical Sciences. The internal loading of … WebSep 27, 2024 · The first studies of gaseous detonation bounded by an inert confinement were performed by Sommers and Morrison . An unsuccessful attempt was made to obtain an autonomous detonation in a cylindrical column of reactive gas surrounded by air. The propagation was, however, achieved in a rectangular channel composed of three rigid … glitzy n\u0027 icey royale highWebApr 29, 2014 · Either for suppressing unintentional detonation or safely using its controlled propagation, a thorough knowledge of the conditions under which a detonation can be … boehringer buscopan

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Gaseous detonation

Synthesis of multilayer graphene and hollow multilayer

WebSep 11, 2024 · Detonation—sometimes called knock or pre-ignition—is a pinging sound that can sometimes be heard during acceleration and throttle tip-in. Unlike normal … Web−Single chosen to match CEA (real gas) distribution • Throat is notionally fluidic and affects cycle time and refill Mach −Sized such that avg. refill Mach number matches predetonation axial Mach number from CFD simulations • Characteristic length, L eff determined by matching circumferential detonation transit time to lumped

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WebThe efficient utilization of energy in rich fuel detonation processes and the effective control method of soot are important topics in combustion research. In this paper, we numerically study the detonation wave behavior of acetylene–air systems in rich fuel condition by using a reduced reaction mechanism. The non-stiff terms of the governing equations … Web22 hours ago · But the detonation of natural gas by cyber means remains very much front of mind. When a major explosion shuttered the Freeport, Texas liquefied natural gas (LNG) terminal on June 8, 2024, a ...

WebMay 12, 2024 · The propagation of two-dimensional cellular gaseous detonation bounded by an inert layer is examined via computational simulations. The analysis is based on the high-order integration of the … WebApr 11, 2024 · The former two cases are observed in a stoichiometric hydrogen-air mixture, the oblique detonation originates from the impact shock region where the pre-combustion hot gas near the wall interacts with the oblique shocks. In the second case, different proportions of dilution gas are tested.

Web22 hours ago · But the detonation of natural gas by cyber means remains very much front of mind. When a major explosion shuttered the Freeport, Texas liquefied natural gas … WebAug 27, 2024 · The gas phase occurs as compressed even to a higher rate than in gaseous detonation. In the limit of the infinite thickness of the liquid films, the bubbles are collapsing, so extreme values of temperature and pressure can be achieved inside the bubble due to the energy focusing. In the case of the finite thickness of liquid films, they are ...

WebOct 1, 1977 · Most fuel-oxygen gas mixtures can be detonated. If a detonating mixture is diluted with an inert gas such as nitrogen, there then exists a particular oxygen to nitrogen ratio below which the mixture can no longer be detonated. If this oxygen to nitrogen 0.25 (composition of air), the fuel will also detonate when mixed with air. If a mixture …

WebA phenomenon of detonation transmission from one gaseous mixture (donor) to another of lower sensitivity (acceptor) was studied experimentally and numerically. The objective was to study effects of a donor mixture length and acceptor mixture sensitivity on the possibility of detonation transmission. Experiments were carried out in detonation tube 9.5–12 m … glitzy n\\u0027 icey royale highWebDec 9, 2004 · This option allows users to search by Publication, Volume and Page Selecting this option will search the current publication in context. Book Search tips Selecting this option will search all publications across the Scitation platform Selecting this option will search all publications for the Publisher/Society in context boehringer barcelonaWebDynamic Parameters of Gaseous Detonations J H S Lee Annual Review of Fluid Mechanics The Dynamics of Detonation in Explosive Systems John B. Bdzil and D. Scott Stewart … boehringer cadastroWebJan 17, 2024 · Gaseous detonation with water droplets (WD) propagates stably with a velocity decrease compared with the dry … boehringer bicycle tiresWebApr 13, 2024 · Adaptive high-resolution simulations of gaseous detonation using a hot-jet initiation were conducted in supersonic combustible mixtures with spatially nonuniform … boehringer animal health ukWebJan 1, 2009 · Conclusions. There is no single paradigm for detonation front structure but a range of behavior that depends on mixture type, boundary, and initial … boehringer bioprocess jobWebOct 15, 2024 · 1. Introduction. Gaseous hydrocarbon detonation method was employed in the preparation of ultra-fine carbon black in the middle of the 20th century [1], due to its high yield of products and low consumption of energy.With the development of gaseous detonation method, it has become a novel method for nanomaterials prepared [2], [3], … glitzy photo frames