2022 Fiscal Year Research-status Report
Turbulent flame propagation and extinction behaviors and mechanisms of solid particle fuel/ammonia co-combustion
| Project/Area Number |
22K20395
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| Research Institution | Tohoku University |
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Principal Investigator |
Xia Yu 東北大学, 流体科学研究所, 特任助教 (10945645)
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| Project Period (FY) |
2022-08-31 – 2024-03-31
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| Keywords | Ammonia combustion / Particles combustion / Co-combustion / Flame extinction / Flame propagation |
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| Outline of Annual Research Achievements |
In this fiscal year, research was smoothly progressed.
First, experiments on turbulent flame propagation and extinction on pure ammonia combustion and particle cloud/ammonia co-combustion were separately conducted.
Second, comparison between pure ammonia combustion and co-combustion was finished. It was found that volatile matters from particles have an important effect on turbulent flame propagation and extinction of co-combustion. When ammonia equivalence ratio is lower than unity, the volatile matter enhances flame stability. However, in ammonia rich cases, it has negative effect.
Third, turbulent flame propagation and extinction mechanisms were proposed to understand the phenomena.
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| Current Status of Research Progress |
Current Status of Research Progress
2: Research has progressed on the whole more than it was originally planned.
Reason
First, in the proposed plan, turbulent flame propagation and extinction experiments should be finished in this fiscal year. This point was progressed smoothly. Further, part of the data comparison was finished. One paper was published in one top journal in combustion field. The turbulent flame propagation and extinction mechanisms were proposed. Moreover, the data on turbulent flame extinction of pure particle cloud combustion is in analysis.
Second, the analytical solution and chemical reaction analysis are in progress to understand the chemical reaction coupling between ammonia combustion and volatile matter combustion.
Third, the laser diagnostic experiments are in preparation for the validation of the turbulent flame propagation and extinction mechanisms.
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| Strategy for Future Research Activity |
First, in the next fiscal year, more experiments will be conducted to understand the particle size and concentration effect on turbulent flame propagation and extinction phenomena. One journal paper will be published based on the analysis.
Second, the analytical solution and chemical reaction analysis will be conducted to understand the effect of volatile matter on co-combustion phenomenon.
Third, the validation experiments on the turbulent flame propagation and extinction mechanism will be conducted in the next fiscal year.
Fourth, the principle investigator will join several international conferences for the discussion of the results.
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