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Modelling of Hcci Combustion Using Adaptive Chemical Kinetics

Lövås, Terese LU ; Mauss, Fabian LU ; Hasse, Christsian and Peters, Norbert (2002) In SAE Technical Papers
Abstract
In this paper an online method for automatically reducing complex chemical mechanisms for simulations of combustion phenomena has been developed. The method is based on the Quasi Steady State Assumption (QSSA). In contrast to previous reduction schemes where chemical species are selected only when they are in steady state throughout the whole process, the present method allows for species to be selected at each operating point separately generating an adaptive chemical kinetics. The method is used for calculations of a natural-gas-fueled engine operating under Homogenous Charge Compression Ignition (HCCI) conditions. We discuss criteria for selecting steady state species and the influence of these criteria on the results such as... (More)
In this paper an online method for automatically reducing complex chemical mechanisms for simulations of combustion phenomena has been developed. The method is based on the Quasi Steady State Assumption (QSSA). In contrast to previous reduction schemes where chemical species are selected only when they are in steady state throughout the whole process, the present method allows for species to be selected at each operating point separately generating an adaptive chemical kinetics. The method is used for calculations of a natural-gas-fueled engine operating under Homogenous Charge Compression Ignition (HCCI) conditions. We discuss criteria for selecting steady state species and the influence of these criteria on the results such as concentration profiles and temperature. (Less)
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author
organization
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type
Contribution to journal
publication status
published
subject
keywords
Chemical Kinetics Combustion physics laserdiagnostic
in
SAE Technical Papers
publisher
Society of Automotive Engineers
language
English
LU publication?
yes
id
826e553c-b6ec-4795-9575-317d63ded083 (old id 707665)
alternative location
http://www.sae.org/technical/papers/2002-01-0426
date added to LUP
2007-12-07 14:04:46
date last changed
2016-11-15 13:22:54
@misc{826e553c-b6ec-4795-9575-317d63ded083,
  abstract     = {In this paper an online method for automatically reducing complex chemical mechanisms for simulations of combustion phenomena has been developed. The method is based on the Quasi Steady State Assumption (QSSA). In contrast to previous reduction schemes where chemical species are selected only when they are in steady state throughout the whole process, the present method allows for species to be selected at each operating point separately generating an adaptive chemical kinetics. The method is used for calculations of a natural-gas-fueled engine operating under Homogenous Charge Compression Ignition (HCCI) conditions. We discuss criteria for selecting steady state species and the influence of these criteria on the results such as concentration profiles and temperature.},
  author       = {Lövås, Terese and Mauss, Fabian and Hasse, Christsian and Peters, Norbert},
  keyword      = {Chemical Kinetics
Combustion physics
laserdiagnostic},
  language     = {eng},
  publisher    = {ARRAY(0x9268468)},
  series       = {SAE Technical Papers},
  title        = {Modelling of Hcci Combustion Using Adaptive Chemical Kinetics},
  year         = {2002},
}