Ignition and Supersonic Burning of Air - Fuel Mixtures Initiated by Electrical Discharges PDF Download
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 139
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Book Description
This report results from a contract tasking Moscow State University as follows: The contractor will investigate the use of pulsed plasma jets and transversal pulsed-periodic discharges to ignite and efficiently combust hydrocarbon fuel/air mixtures in supersonic flows. Effects of pulse duration pulse power. electrode material and operating frequency will be determined for both propane/air and kerosene/air mixtures over equivalence rations from 0.3 to 1.0 at Mach 1.5, 2.0 and 3.0. Diagnostics will be used to determine the radiation spectra for the different discharges in the supersonic flow. Measurements of chemical radical and electron concentrations will also be made. Corresponding numerical simulations will be compared to the experimental data.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 139
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Book Description
This report results from a contract tasking Moscow State University as follows: The contractor will investigate the use of pulsed plasma jets and transversal pulsed-periodic discharges to ignite and efficiently combust hydrocarbon fuel/air mixtures in supersonic flows. Effects of pulse duration pulse power. electrode material and operating frequency will be determined for both propane/air and kerosene/air mixtures over equivalence rations from 0.3 to 1.0 at Mach 1.5, 2.0 and 3.0. Diagnostics will be used to determine the radiation spectra for the different discharges in the supersonic flow. Measurements of chemical radical and electron concentrations will also be made. Corresponding numerical simulations will be compared to the experimental data.
Author: Franklin A. Fisher
Publisher:
ISBN:
Category : Aircraft accidents
Languages : en
Pages : 42
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Book Description
This report compliments a concurrent analysis of the electromagnetic field threat to the fuel system of a transport aircraft. The accompanying effort assessed currents, voltages and power levels that may be induced upon fuel tank wiring from radio transmitters (inside and outside the aircraft). In addition to this, it was also essential to determine how much voltage, current, or power is required to create a fuel-vapor ignition hazard. The widely accepted minimum guideline for aircraft fuel-vapor ignition is the application of a 0.2 milliljoule energy level. However, when considering radio frequency (RF) sources, this guideline is seriously inadequate. This report endeavors to bridge the gap between a traditional understanding of electrical breakdown, heating and combustion; and supplement the knowledge with available information regarding aircraft fuel-vapor ignition by RF sources.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 4
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Book Description
In the report the pulsed periodical discharges created on an external surface of a flat plate being flown around of supersonic airflow and under condition of a stagnant zone located on a wide wall of the aerodynamic channel of rectangular section were investigated. It was shown that the surface pulsed periodical discharge results to ignition beforehand mixed supersonic propane air fuel in the aerodynamic channel. In experimental conditions the combustion front speed reaches value of vc=4O-45 m/s that well coordinates to the data which was got at investigation of burning into the fire resistant channel.
Author: Elton L. Litchfield
Publisher:
ISBN:
Category : Combustion gases
Languages : en
Pages : 14
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 11
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Book Description
In the report the pulsed-periodical discharges created on an external surface of a flat plate being flown around of supersonic airflow and under condition of a stagnant zone located on a wide wall of the aerodynamic channel of rectangular section were investigated. It was show that the surface pulsed-periodical discharge results to ignition beforehand mixed supersonic propane-air fuel in the aerodynamic channel. In experimental conditions the combustion front speed reaches value of v(sub c)=40-45 m/s that well coordinates to the data which was got at investigation of burning into the fire-resistant channel. The kinetical model is working out for finding-out of influence of different channels on ignition of combustible mixtures in supersonic flow. The preliminary calculations demonstrate that at low initial gas temperature the induction time of H2-O2 mixture decreases on some orders of magnitude at taking into account of dissociation active radicals and charged particles.
Author: Paul William Huber
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 64
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 4
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Book Description
In many areas of exterior and interior supersonic dynamics of reacting gas mixtures realize the conditions when a self-supporting progress of a reaction is impossible or undesirable. The present paper deals with the possibility of progressing the reaction of athermic combustion initiated by the diffusive electric discharge in a supersonic stream. The investigations has been perfonned within the framework of a program on the fonnation of a pyrolytic reactor for natural gas conversion. The stationary diffusive electric discharge has been realized and studied in the supersonic expanding stream with Mach number of M = 3. The previous investigations on poor mixtures combustion initiated by the diffusive electric discharge, have been carried out and are discussed.
Author: J. Leon Shohet
Publisher: CRC Press
ISBN: 1482214318
Category : Technology & Engineering
Languages : en
Pages : 1654
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Book Description
Technical plasmas have a wide range of industrial applications. The Encyclopedia of Plasma Technology covers all aspects of plasma technology from the fundamentals to a range of applications across a large number of industries and disciplines. Topics covered include nanotechnology, solar cell technology, biomedical and clinical applications, electronic materials, sustainability, and clean technologies. The book bridges materials science, industrial chemistry, physics, and engineering, making it a must have for researchers in industry and academia, as well as those working on application-oriented plasma technologies. Also Available Online This Taylor & Francis encyclopedia is also available through online subscription, offering a variety of extra benefits for researchers, students, and librarians, including: Citation tracking and alerts Active reference linking Saved searches and marked lists HTML and PDF format options Contact Taylor and Francis for more information or to inquire about subscription options and print/online combination packages. US: (Tel) 1.888.318.2367; (E-mail)
[email protected] International: (Tel) +44 (0) 20 7017 6062; (E-mail)
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Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 440
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Book Description
Author: Nick Syred
Publisher: Springer
ISBN: 1402065159
Category : Technology & Engineering
Languages : en
Pages : 468
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Book Description
Here readers will find a summary of proceedings at a highly important NATO workshop. The ARW Advanced Combustion and Aerothermal Technologies: Environmental Protection and Pollution Reductions, was held in Kiev, May 2006. The workshop was co-directed by Profs. N. Syred and A.Khalatov, winners of the NATO Scientific Prize 2002, and was organized by the Institute of Thermophysics (Ukraine) and Cardiff University, UK. The primary workshop objective was to assess the existing knowledge on advanced combustion and aerothermal technologies providing reduced environmental impact.
