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Müller, U.C. and Peters, N. and Liñán Martínez, Amable (1992). Global kinetics for n-heptane ignition at high pressures. In: "Symposium (International) on Combustion (24. 1992. Sydney)", 5-10 Jul 1992, Sydney. ISBN 0082-0784.
Title: | Global kinetics for n-heptane ignition at high pressures |
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Author/s: |
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Item Type: | Presentation at Congress or Conference (Article) |
Event Title: | Symposium (International) on Combustion (24. 1992. Sydney) |
Event Dates: | 5-10 Jul 1992 |
Event Location: | Sydney |
Title of Book: | Twenty-Fourth Symposium (International) on Combustion |
Date: | 1992 |
ISBN: | 0082-0784 |
Subjects: | |
Faculty: | E.T.S.I. Aeronáuticos (UPM) |
Department: | Motopropulsión y Termofluidodinámica [hasta 2014] |
Creative Commons Licenses: | Recognition - No derivative works - Non commercial |
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A kinetic mechanism of 1011 elementary reactions with 171 chemical species for n-heptane ignition is analysed and reduced to 4 global steps with adjusted rate coefficients to describe ignition at pressures around 40 atm. Two of these steps account for the high temperature branch and the other two for the low temperature branch of the ignition mechanism. The ignition delay time passes through a negative temperature dependence during the transition between the two branches. This is accounted for by the reversible third reaction step, which models the first and second 02-addition in the degenerated chain branching mechanism at low temperatures. Ignition delay times calculated with the adjusted 4-step model are compared to those from the detailed kinetics and experimental data. Finally the 4-step mechanism is analysed by asymptotic methods and explicit ignition delay time formulas are derived.
Item ID: | 1294 |
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DC Identifier: | https://oa.upm.es/1294/ |
OAI Identifier: | oai:oa.upm.es:1294 |
Deposited by: | Biblioteca ETSI Aeronauticos |
Deposited on: | 12 Jan 2009 |
Last Modified: | 13 Mar 2023 12:26 |