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Thursday, May 7, 2020 | History

3 edition of Jet-A reaction mechanism study for combustion application found in the catalog.

Jet-A reaction mechanism study for combustion application

Jet-A reaction mechanism study for combustion application

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  • 22 Currently reading

Published by National Aeronautics and Space Administration, US Army Aviation Systems Command, National Technical Information Service [distributor] in [Washington, DC], [St. Louis, Mo.], [Springfield, Va.? .
Written in English

    Subjects:
  • Airplanes -- Motors.

  • Edition Notes

    StatementChi-Ming Lee and Krishna Kundu and Waldo Acosta.
    SeriesNASA technical memorandum -- 104441., AVSCOM technical report -- 91-C-029., AVSCOM technical report -- 91-C-29.
    ContributionsKundu, Krishna P., Acosta, Waldo A., United States. National Aeronautics and Space Administration., United States. Army Aviation Systems Command.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL18053943M

    A large number of theoretical and experimental studies have shown that the performance of kerosene combustion increases significantly if combustion is being assisted by the addition of hydrogen to the fuel/air mixture during the combustion process. It reduces the amount of CO, CO2 and NOx emissions, while increasing the flame stability limits. It also helps in bruning fuel/air mixtures at much Cited by: 5.   * I recently completed my study on real-gas combustion and utilized density-based solver which worked very well in my case (RCM1B, benchmark). You can try that too. * Realizable k-e model is more suitable for jet flows, if my memory serves.

    various fuels and a compendium of exposure limits recommended by national and international government bodies and other organizations. That information is followed by a description of the toxicokinetics of the fuels and a summary of experimental studies conducted in humans and animals, focusing on studies that yielded information on chronic adverse health effects, on genetic . The Combustion Energy Frontier Research Center (CEFRC) was established to tackle the single overarching grand challenge of energy sustainability, energy security and global warming: to develop a “validated, predictive, multi-scale, combustion modeling capability to optimize the design and operation of evolving fuels in advanced engines for.

    The flamelet generated manifold (FGM) [56,63] turbulent combustion modeling approach, when used with a detailed reaction mechanism, predicts a rather small lift-off that may show a fair agreement with the experimental value only for high co-flow temperatures for some reaction mechanisms. However, the sensitivity of the lift-off height to the co Author: Ali Cemal Benim, Björn Pfeiffelmann. This thesis focuses on the study of natural gas combustion under engine relevant conditions. The work begins with the development of a detailed chemical kinetic mechanism that represents the ignition characteristics of methane with various minor additives over a wider range of operating conditions than previously existing mechanisms. The mechanism includes a NOx submechanism selected from the Cited by: 9.


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Jet-A reaction mechanism study for combustion application Download PDF EPUB FB2

Jet-A Reaction Mechanism Study for Combustion Application Chi-Ming Lee and Krishna Kundu Lewis Research Center Cleveland, Ohio and Waldo Acosta Propulsion Directorate U.S. Army Aviation Systems Command Lewis Research Center Cleveland, Ohio Prepared for the 27th Joint Propulsion Conference cosponsored by the AIAA, SAE, ASME, and ASEEFile Size: 5MB.

Get this from a library. Jet-A reaction mechanism study for combustion application. [Chi-Ming Lee; Krishna Kundu; Waldo A Acosta; United States. National Aeronautics and Space Administration.; United States. Army Aviation Systems Command.].

Detailed and Reduced Mechanisms of Jet a Combustion at High Temperatures indispensable approach for the study of supersonic combustion. When using the JetSurf chemical reaction. In a previous paper [Ajmani ] a reduced mechanism was reported to describe the combustion of Jet-A/Air in CFD calculations.

The reduced mechanism was developed mostly by comparing the ignition delays in a plug-flow reactor with published results. In aircraft gas-turbine engines, fuel is ignited. Simplified chemical kinetic reaction mechanisms for the combustion of Jet A fuel are studied.

Initially 40 reacting species and elementary chemical reactions were chosen based on the. tures are shown in Fig. For this study, experiments were performed on this AtJ-SPK and on Jet A-1, for comparing the results with a conventional fuel, by measuring the characteristic combustion properties laminar burning velocity and igni-tion delay time, each at different pressures and equivalence ratios.

C H 3 C C H 2 C CH 3 H 3 C CH CH H. The kinetics of oxidation of a Coal-to-Liquid (CtL) Fully Synthetic Jet Fuel (FSJF) was studied using three complementary experiments operating over a wide range of conditions: a jet stirred reactor (p = 10 bar), constant mean residence time of 1 s, over the temperature range – K, and for equivalence ratios φ =, and ; a shock-tube (p ∼ 16 bar, temperature range between Cited by:   1-Hexanol is among the promising renewable long-chain alcohols usable as an alternative to petrol-derived gasoline and diesel fuels.

To better understand the combustion characteristics of 1-hexanol, new experimental data for the oxidation and combustion of 1-hexanol were obtained.

Stable species concentration profiles were measured in a jet stirred reactor (JSR) at 10 atm over a range of Cited by: tures are shown in Fig. For this study, experiments were performed on this AtJ-SPK and on Jet A-1, for comparing the results with a conventional fuel, by measuring characteristicthe combustion properties laminar burning velocity and igni-tion delay time, each at different pressures and equivalence ratios.

C H 3 C CH 2 CH CH 3 H 3C CH CH C C. Ethylene oxidation and pyrolysis was modeled using a comprehensive kinetic reaction mechanism. This mechanism is an updated version of one developed earlier.

It includes the most recent findings concerning the kinetics of the reactions involved in the oxidation of by: The chosen combustion model has been the EDM model, based on a two-step kerosene-air reaction mechanism, imported from the ANSYS library.

A simple reaction mechanism has been chosen because the purpose of these numerical simulations was to see if the used numerical models give a good approximation of the turbo engine functioning as a : Valeriu Vilag, Jeni Vilag, Razvan Carlanescu, Andreea Mangra, Florin Florean.

Westbrook C, Pitz W, Herbinet O et al () A comprehensive detailed chemical kinetic reaction mechanism for combustion of n-alkane hydrocarbons from n-octane to n-hexadecane.

Combust Flame – CrossRef Google ScholarCited by: 8. A kinetic model of ignition and combustion of heavy n-alkanes (n-C10H22 and n-C12H26), benzene, and aviation kerosene fuel Jet-A, which is modeled by a BD surrogate consisting of n-decane (80%) and benzene (20%), is developed.

The model is tested through comparisons with a large set of experimental data on the ignition delay time in both high-temperature (T > K) and low Cited by: The operating conditions (pressure and temperature) are chosen that are relevant to aircraft gas turbine combustors.

For the ignition delay studies, Jet-A is used whereas Methane is the fuel for the other simulations. Well validated reaction mechanisms for Jet-A and Methane are used for the : Venkata Nori, Fang Xu.

This research is part of the National Jet Fuels Combustion Program and satisfies the Area #1 goals of providing chemical kinetics and combustion experiments. A shock tube study of jet fuel pyrolysis and ignition at elevated pressures and temperatures; A physics-based approach to modeling real-fuel combustion chemistry - II.

Reaction kinetic. This paper describes an experimental and modeling study of the oxidation of the three isomers of xylene (ortho‐, meta‐, and para‐xylenes). For each compound, ignition delay times of hydrocarbon–oxygen–argon mixtures with fuel equivalence ratios from to 2 were measured behind reflected shock waves for temperatures from to Cited by: An Improved Core Reaction Mechanism for Saturated C 0 -C 4 Fuels J.

Eng. Gas Turbines Power (February, ) Autoignition of Hydrogen and Air Inside a Continuous Flow Reactor With Application to Lean Premixed CombustionCited by: 7.

Introduction. Aviation or jet fuel is a multi-component fuel with a carbon chain length of C 8-C 16 [1,2].Commercial and military jet fuels are mixtures of paraffins, naphthenes or cycloparaffins, aromatics and olefins compounds [2,3].Paraffins, iso-paraffins and cycloparaffins (approximately 70–85%) are the major components [] which are mainly responsible for reducing the freezing point Cited by: 7.

Abstract. The steam injection technology for aircraft engines is gaining rising importance because of the strong limitations imposed by the legislation for NOx reduction in airporAuthor: Rui Xue, Chunbo Hu, Theoklis Nikolaidis, Pericles Pilidis.

The oxidation of kerosene Jet-A1 and that of n-decane have been studied experimentally in a jet-stirred reactor at atmospheric pressure and constant residence time, over the high temperature range – K, and for variable equivalence ratio (≤ϕ≤2).Concentration profiles of the reactants, stable intermediates, and final products have been obtained by probe sampling followed by on Cited by:.

Journals. All Journals; Mechanical Engineering Magazine Select Articles; Applied Mechanics Reviews; ASCE-ASME Journal of Risk and Uncertainty in Engineering Systems, Part B: Mechanical Engineering.For the current study ethylene of % purity supplied by Praxair was used to produce ethylene-air mixtures for fuelling the pre-chamber.

A conventional spark-ignition system is employed in the pre-chamber to develop the combustion torch jet. A capacitive discharge ignition (MSD 6AL) system is used in conjunction with an ignition coil.E 6a NASA Technical Memorandum AIAA AVSCOM Technical Report C- Jet-A Reaction Mechanism Study for Combustion Application.

Chi-Ming Lee and Krishna Kundu Lewis Research Center Cleveland, Ohio and Waldo Acosta Propulsion Directorate U.S. Army Aviation Systems Command Lewis Research Center Cleveland, Ohio. Prepared for the 27th Joint Propulsion .