Application of the optimized decoupling methodology for the construction of a skeletal primary reference fuel (PRF) mechanism focusing on engine-relevant conditions
For the multi-dimensional simulation of the engines with advanced compression-ignition combustion strategies, a practical and robust chemical kinetic mechanism is highly demanded. Decoupling methodology is effective for the construction of skeletal mechanisms for long-chain alkanes. To improve the p...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2015-09-01
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| Series: | Frontiers in Mechanical Engineering |
| Subjects: | |
| Online Access: | http://journal.frontiersin.org/Journal/10.3389/fmech.2015.00011/full |
| _version_ | 1819146962410143744 |
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| author | Yachao eChang Ming eJia Yaopeng eLi Maozhao eXie |
| author_facet | Yachao eChang Ming eJia Yaopeng eLi Maozhao eXie |
| author_sort | Yachao eChang |
| collection | DOAJ |
| description | For the multi-dimensional simulation of the engines with advanced compression-ignition combustion strategies, a practical and robust chemical kinetic mechanism is highly demanded. Decoupling methodology is effective for the construction of skeletal mechanisms for long-chain alkanes. To improve the performance of the decoupling methodology, further improvements are introduced based on recent theoretical and experimental works. The improvements include: (1) updating the H2/O2 sub-mechanism; (2) refining the rate constants in the HCO/CH3/CH2O sub-mechanism; (3) building a new reduced C2 sub-mechanism; and (4) improving the large-molecule sub-mechanism. With the improved decoupling methodology, a skeletal primary reference fuel (PRF) mechanism is developed. The mechanism is validated against the experimental data in shock tubes, jet-stirred reactors, premixed and counterflow flames for various PRF fuels covering the temperature range of 500–1450 K, the pressure range of 1–55 atm, and the equivalence ratio range of 0.25¬–1.0. Finally, the skeletal mechanism is coupled with a multi-dimensional computational fluid dynamics model to simulate the combustion and emission characteristics of homogeneous charge compression ignition (HCCI) engines fueled with iso-octane and PRF. Overall, the agreements between the experiment and prediction are satisfactory. |
| first_indexed | 2024-12-22T13:22:15Z |
| format | Article |
| id | doaj.art-2fc7ee30f3cf45bb851cd4cda2e8c91d |
| institution | Directory Open Access Journal |
| issn | 2297-3079 |
| language | English |
| last_indexed | 2024-12-22T13:22:15Z |
| publishDate | 2015-09-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Mechanical Engineering |
| spelling | doaj.art-2fc7ee30f3cf45bb851cd4cda2e8c91d2022-12-21T18:24:26ZengFrontiers Media S.A.Frontiers in Mechanical Engineering2297-30792015-09-01110.3389/fmech.2015.00011146527Application of the optimized decoupling methodology for the construction of a skeletal primary reference fuel (PRF) mechanism focusing on engine-relevant conditionsYachao eChang0Ming eJia1Yaopeng eLi2Maozhao eXie3Dalian University of TechnologyDalian University of TechnologyDalian University of TechnologyDalian University of TechnologyFor the multi-dimensional simulation of the engines with advanced compression-ignition combustion strategies, a practical and robust chemical kinetic mechanism is highly demanded. Decoupling methodology is effective for the construction of skeletal mechanisms for long-chain alkanes. To improve the performance of the decoupling methodology, further improvements are introduced based on recent theoretical and experimental works. The improvements include: (1) updating the H2/O2 sub-mechanism; (2) refining the rate constants in the HCO/CH3/CH2O sub-mechanism; (3) building a new reduced C2 sub-mechanism; and (4) improving the large-molecule sub-mechanism. With the improved decoupling methodology, a skeletal primary reference fuel (PRF) mechanism is developed. The mechanism is validated against the experimental data in shock tubes, jet-stirred reactors, premixed and counterflow flames for various PRF fuels covering the temperature range of 500–1450 K, the pressure range of 1–55 atm, and the equivalence ratio range of 0.25¬–1.0. Finally, the skeletal mechanism is coupled with a multi-dimensional computational fluid dynamics model to simulate the combustion and emission characteristics of homogeneous charge compression ignition (HCCI) engines fueled with iso-octane and PRF. Overall, the agreements between the experiment and prediction are satisfactory.http://journal.frontiersin.org/Journal/10.3389/fmech.2015.00011/fullSkeletal mechanismHomogeneous charge compression ignition (HCCI)Primary reference fuelDecoupling methodologyignition delay; laminar flame speed |
| spellingShingle | Yachao eChang Ming eJia Yaopeng eLi Maozhao eXie Application of the optimized decoupling methodology for the construction of a skeletal primary reference fuel (PRF) mechanism focusing on engine-relevant conditions Frontiers in Mechanical Engineering Skeletal mechanism Homogeneous charge compression ignition (HCCI) Primary reference fuel Decoupling methodology ignition delay; laminar flame speed |
| title | Application of the optimized decoupling methodology for the construction of a skeletal primary reference fuel (PRF) mechanism focusing on engine-relevant conditions |
| title_full | Application of the optimized decoupling methodology for the construction of a skeletal primary reference fuel (PRF) mechanism focusing on engine-relevant conditions |
| title_fullStr | Application of the optimized decoupling methodology for the construction of a skeletal primary reference fuel (PRF) mechanism focusing on engine-relevant conditions |
| title_full_unstemmed | Application of the optimized decoupling methodology for the construction of a skeletal primary reference fuel (PRF) mechanism focusing on engine-relevant conditions |
| title_short | Application of the optimized decoupling methodology for the construction of a skeletal primary reference fuel (PRF) mechanism focusing on engine-relevant conditions |
| title_sort | application of the optimized decoupling methodology for the construction of a skeletal primary reference fuel prf mechanism focusing on engine relevant conditions |
| topic | Skeletal mechanism Homogeneous charge compression ignition (HCCI) Primary reference fuel Decoupling methodology ignition delay; laminar flame speed |
| url | http://journal.frontiersin.org/Journal/10.3389/fmech.2015.00011/full |
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