期刊
ENERGIES
卷 14, 期 17, 页码 -出版社
MDPI
DOI: 10.3390/en14175548
关键词
Direct Numerical Simulation; turbulent premixed combustion; simple chemistry; detailed chemistry; methane-air flame
This study compares flame propagation statistics obtained from simple and detailed chemistry Direct Numerical Simulations, establishing a new database encompassing different conditions on the turbulent premixed combustion regime diagram. The results show good qualitative and reasonably good quantitative agreement between the two approaches, suggesting the importance of simple chemistry simulations in future combustion research.
In the present study, flame propagation statistics from turbulent statistically planar premixed flames obtained from simple and detailed chemistry, three-dimensional Direct Numerical Simulations, were evaluated and compared to each other. To this end, a new database was established encompassing five different conditions on the turbulent premixed combustion regime diagram, using nearly identical numerical methods and the same initial and boundary conditions. A detailed discussion of the advantages and limitations of both approaches is provided, including the difference in carbon footprint for establishing the database. It is shown that displacement speed statistics and their interrelation with curvature and tangential strain rate are in very good qualitative and reasonably good quantitative agreement between simple and detailed chemistry Direct Numerical Simulations. Hence, it is concluded that simple chemistry simulations should retain their importance for future combustion research, and the environmental impact of high-performance computing methods should be carefully chosen in relation to the goals to be achieved.
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