Multitarget global sensitivity analysis of n-butanol combustion
Dingyu D Y Zhou1, Michael J Davis, Rex T Skodje
1Department of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado 80309-0215, USA.
The Journal of Physical Chemistry. A
|March 28, 2013
Summary
This study introduces an improved theoretical method for analyzing butanol combustion kinetics. The enhanced approach validates kinetic mechanisms more comprehensively by combining ignition and species targets.
Area of Science:
- Chemical kinetics
- Combustion science
- Theoretical chemistry
Background:
- Kinetic mechanisms are crucial for understanding combustion processes.
- Existing methods for kinetic mechanism validation can be limited.
- Systematic improvement of kinetic models is an ongoing challenge.
Purpose of the Study:
- To develop and apply a novel theoretical method for enhancing kinetic mechanism accuracy.
- To validate a detailed butanol combustion model using an improved analysis technique.
- To extend mechanism validation by incorporating both ignition and species targets.
Main Methods:
- Utilized a recently developed theoretical method for systematic kinetic mechanism improvement.
- Implemented a full global sensitivity analysis on a 1446-reaction butanol mechanism.
- Extended analysis to include species targets alongside ignition-delay targets for multitarget validation.
Main Results:
- Demonstrated the computational feasibility of global sensitivity analysis for large kinetic mechanisms.
- Showcased the effectiveness of multitarget global sensitivity analysis for comprehensive mechanism validation.
- Enabled direct comparison between reaction pathway analysis and global sensitivity analysis via species targets.
Conclusions:
- The proposed theoretical method offers a more complete procedure for kinetic mechanism validation.
- Multitarget sensitivity analysis provides deeper insights into combustion model accuracy.
- This approach facilitates the refinement of butanol combustion models.
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