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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술대회자료
- 저자정보
- 발행연도
- 2014.10
- 수록면
- 133 - 137 (5page)
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초록· 키워드
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Large eddy simulations (LES) of a turbulent diffusion flame with a hybrid fuel of methane and hydrogen are carried out to investigate the effects of various operating conditions on the flame shape fuel consumption rate, and pollutants formation. A parametric study is performed by using methane/hydrogen ratios, background pressures and temperatures, where the pressure and temperature are elevated to the level that can be found at the end of compression stroke in an internal combustion engine. A flamelet-progress variable approach (FPVA) and a dynamic subgrid scale (SGS) model are used to for LES. The statistics of flow fields and chemical compositions reasonably agree with previous experiments and simulations in the standard temperature and pressure. In this condition, the parametric study results also show consistent with previous studies. It is found that the effects of added hydrogen are consistent for most of the chemical species in all the tested background conditions, while there are some discrepancies in the flow fields of some species such as OH, NO, CO at higher pressure and temperature conditions, as compared to those in the standard conditions. Finally, the effect of hydrogen addition on flame stability in different background conditions is investigated by the pressure fluctuations.
목차
Abstract
1. Introduction
2. Analysis of NO formation and results
3. Conclusion
4. References
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