Sensitivity analysis and mechanism simplification using the G-Scheme framework
Sensitivity analysis and mechanism simplification using the G-Scheme framework
We have developed specific procedures that utilize the G-Scheme modal decomposition to carry out the sensitivity analysis along-with the numerical integration of chemical kinetics systems, so as to understand the roles of the most important reactions, and to identify the most important reaction paths of the processes. The sensitivity information allow to generate skeletal kinetic mechanisms for chemical kinetics mechanism. The procedures are based on participation indices constructed from the G-Scheme dynamics decomposition, but can be applied to databases generated by any numerical solver. The effectiveness of these procedures is demonstrated with reference to the auto-ignition problem of a homogeneous hydrogen/air mixture.
Adaptive scheme, Model analysis, Model reduction, Multiple time scales
275-287
Grenga, Temistocle
be0eba30-74b5-4134-87e7-3a2d6dd3836f
Paolucci, Samuel
d9d7b875-1826-43d8-8058-c48802001e29
Valorani, Mauro
831fae90-ef8a-49fb-bef8-123a70ef8024
17 January 2018
Grenga, Temistocle
be0eba30-74b5-4134-87e7-3a2d6dd3836f
Paolucci, Samuel
d9d7b875-1826-43d8-8058-c48802001e29
Valorani, Mauro
831fae90-ef8a-49fb-bef8-123a70ef8024
Grenga, Temistocle, Paolucci, Samuel and Valorani, Mauro
(2018)
Sensitivity analysis and mechanism simplification using the G-Scheme framework.
Combustion and Flame, 189, .
(doi:10.1016/j.combustflame.2017.10.039).
Abstract
We have developed specific procedures that utilize the G-Scheme modal decomposition to carry out the sensitivity analysis along-with the numerical integration of chemical kinetics systems, so as to understand the roles of the most important reactions, and to identify the most important reaction paths of the processes. The sensitivity information allow to generate skeletal kinetic mechanisms for chemical kinetics mechanism. The procedures are based on participation indices constructed from the G-Scheme dynamics decomposition, but can be applied to databases generated by any numerical solver. The effectiveness of these procedures is demonstrated with reference to the auto-ignition problem of a homogeneous hydrogen/air mixture.
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Published date: 17 January 2018
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© 2017 The Combustion Institute
Keywords:
Adaptive scheme, Model analysis, Model reduction, Multiple time scales
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Local EPrints ID: 480932
URI: http://eprints.soton.ac.uk/id/eprint/480932
ISSN: 0010-2180
PURE UUID: e5e27deb-78c7-4725-83e8-23cdd782a304
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Date deposited: 10 Aug 2023 16:59
Last modified: 17 Mar 2024 04:19
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Contributors
Author:
Temistocle Grenga
Author:
Samuel Paolucci
Author:
Mauro Valorani
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