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2 edition of Exploratory Study of the Initiation of Low-Density Petn by Hydrogen-Oxygen Detonation Waves. found in the catalog.

Exploratory Study of the Initiation of Low-Density Petn by Hydrogen-Oxygen Detonation Waves.

National Research Council of Canada. Division of Mechanical Engineering. Gas Dynamics Section.

Exploratory Study of the Initiation of Low-Density Petn by Hydrogen-Oxygen Detonation Waves.

by National Research Council of Canada. Division of Mechanical Engineering. Gas Dynamics Section.

Published .
Written in English

Edition Notes

1

 ID Numbers Series Canada Nrc Mechanical Engineering Report mt -- 59, Publication (National Research Council Canada) -- 10122 Contributions Makomaski, A.H. Open Library OL21880097M

18 Data Handling, Calculations and Questions: Use graph paper and plot temperature vs. time for the pure t-butanol and for each solution analyzed; make 3 different graphs. Use the discussion in the background section above as a guide and determine. m), was filled with a pre-specified mixture of hydrogen-oxygen-nitrogen. Three different diameter vent sizes were employed in the tests: mm, mm and mm, with two different foil thicknesses ( mm and mm). In addition a very fine water mist fog, of adjustable density, could also be generated inside the rig chamber using.

Our study also describes the effect, on the vertical resolution and bed boundary detection, of azimuthal tool position around the perimeter of the wellbore for the case of a deviated well. Finally, we show simulations for the case of a gas-saturated sand bed penetrated by a high-angle well. Results from this study indicate that shoulder beds can. Exploratory experimentation and high-throughput molecular biology appear to have considerable affinity for each other. Included in the latter category is metagenomics, which is the DNA-based study of diverse microbial communities from a vast range of non-laboratory environments. Metagenomics has already made numerous discoveries and these have led to reinterpretations of fundamental concepts.

Study on the go. Download the iOS Download the Android app Other Related Materials. 1 pages. Exp 10 (2) University of Houston CHEM - Summer Exp 10 (2) 2 pages. Exp 9 University of Houston CHEM - Summer Dihydrogen (hydrogen gas) is highly flammable and will burn at concentrations of 4% or more H2 in air. The enthalpy of combustion for hydrogen is − kJ/mol; it burns according to the following.

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Exploratory Study of the Initiation of Low-Density Petn by Hydrogen-Oxygen Detonation Waves by National Research Council of Canada. Division of Mechanical Engineering. Gas Dynamics Section. Download PDF EPUB FB2

Explosion Characteristics of Hydrogen-Air and Hydrogen-Oxygen Mixtures at Elevated Pressures Schroeder, V.1 and Holtappels, K.1 1Bundesanstalt für Materialforschung und –pruefung (BAM), Unter den Eic Berlin, Germany ABSTRACT An essential problem for the operation of high pressure water electrolyzers and fuel cells is theFile Size: KB.

(initiation energy, detonability limit, critical diameter) • Detonation sensitivity of high pressure H 2-air mixtures does not increase as other hydrocarbon fuels do • Transition and onset of detonation (i.e.

quantitative description of turbulent flame acceleration, condition for the onset of detonation. This paper compares two methods of near-threshold initiation of a loose-packed PETN charge: by impact of a plate and by injection of an intense flow of hot gases into the powder. Synchrotron diagnostics of material density was used.

Both methods lead to the development of detonation in about 10 μs, but the nature of initiation differs by: 1. Explosion limits of a stoichiometric hydrogen-oxygen mixture in a spherical KCl-coated vessel of cm diameter.

The open cycles are the experimental data abstracted from Ref. Test results of initiation threshold values with tungsten spheres of different diameters d and Lexan spheres of 76 mm diameter can be very well described by the u 2 d‐Held‐criterion where u is the cratering velocity or ${\rm v/(1 + }\sqrt {\varrho _{\rm t} /\varrho _{\rm p})}$.For covered Composition B the initiation threshold value is 23 mm 3 /μs by: 6.

tion wave. The study has demonstrated the potential of the present models to effectively assess the explosion and detonation hazards in hydrogen facilities. KEYWORDS: Hydrogen, deﬂagration, detonation INTRODUCTION Hydrogen is one of the possible candidates as major energy carriers in the future.

Hydrogen as fuel has the highest. The propagation of this pressure wave is seen in frames 4 and 5. Frame 6 shows a detonation (bright light) at the top of the channel.

This bright light appeared about the same time as the pressure wave from the local explosion reached the flame front. In the last two frames the detonation grew to encompass the entire cross section of the channel.

In this study, the essential factors governing the Z-shaped explosion limits of hydrogen-oxygen mixtures are studied using eigenvalue analysis. In particular, it is demonstrated that the wall destruction of H and HO 2 is essential for the occurrence of the first and third limits, while that of O, OH, and H 2 O 2 play secondary, quantitative roles for such limits.

The explosion of PETN of density g/cm3 was first initiated by the second-harmonic pulse of a Q-switched neodymium laser. It is shown that the primary process of energy absorption in this case is PETN molecule ionization involving two-photon absorption.

The critical initiation energy density corresponding to a % probability of explosion is J/cm2. An exploratory study of the behavior of the detonation products from condensed explosives was conducted wherein a small charge of explosive was detonated at the closed end of a cannon, and.

In this study, the effects of φ and λ on the explosion parameters of the hydrogen–propane mixed fuel at equivalence ratios of,and and hydrogen addition ratios of 0,and were 2 shows the explosion pressure curves of the mixed fuel (λ = ) at various equivalence ratios.

Fig. 2 shows that the P max first increased, then. Shigeoka Hydrogen Detonation in Semi-confined Layers 27th ICDERS – July 28th - August 2nd, – Beijing, China 4 fluctuate dramatically. However, around x/l 1/2 =the number of triple points decreases to one digit.

In the following data, the stable section, 0. Considering the instant scenario, the hydrogen-oxygen equivalence ratio is (ignoring for the moment the water vapor) and T o ois K. Under these conditions the hydrogen detonation cell width (λ) is cm and λ/D = cm/ cm = At this λ/D value, DDT is possible if other conditions are favorable.

However, under the. An experimental study of turbulent combustion of hydrogen sulfide (H2S) and natural gas was performed to provide reference data for verification of CFD codes and direct comparison. Hydrogen sulfide is present in most crude oil sources, and the explosion behaviour of pure H2S and mixtures with natural gas is important to address.

The explosion behaviour was studied in a. A unique, patent pending, thermoacoustic propellant densifier, that simultaneously densifies liquid hydrogen and liquid oxygen propellants for aerospace vehicles is introduced.

The thermoacoustic densifier consists of a two‐stage pulse tube cryocooler that operates at 30 Hz using helium as the working fluid. The extremely reliable pulse tube has no moving parts, is water cooled. On January 8,a hydrogen explosion at the Muskingum River Power Plant’s MW coal-fired supercritical Unit 5 caused one fatality, injuries to 10 other people, and significant damage to.

most important characteristics is its low density, which makes it necessary for any practical applications to either compress the hydrogen or liquefy it.

It is positively buoyant above a temperature of 22 K, i.e., over (almost) the whole temperature range of its gaseous state. Fig. Phase diagram of hydrogen. Consider these facts. Most isotopes of copper are very unstable and decay within seconds. Copper, the most stable radioisotope of copper, takes a few days to decay.

The abundances of metals in the intergalactic medium (IGM) can be used to constrain the amount of star formation at high redshift and the spectral shape of the ionizing background radiation.

For both purposes, it is essential to measure the abundances in regions of low density, away from local sources of metals and ionizing photons. Here we report the first detection of O VI in the low-density.

Combining two parts hydrogen with one part oxygen gets dramatic when you add a little energy. POW. This is Steve Spangler’s unique twist on combining these two gases in hopes of “sparking” your curiosity about hydrogen as an alternative energy source.

An illustration of an open book. Books. An illustration of two cells of a film strip. Video. An illustration of an audio speaker. Audio. An illustration of a " floppy disk. Software. An illustration of two photographs. Images. An illustration of a heart shape Donate. An illustration of text ellipses.Study of the production of hydrogen bubbles at low current densities for electroflotation processes.

Carlos Jiménez. Department of Chemical Engineering, Universidad de Castilla‐La Mancha, Campus Universitario s/n., Ciudad Real, Spain. Search for more papers by this author.Detonation Engine Simulations with Alternative Reaction Kinetics and Geometrical Features, He, X. and Karagozian, A. R., Paper 03F, Western States Section/The Combustion Institute Fall .