Simulation Modeling of an Enhanced Low-Emission Swirl-Cascade Burner. Semi-Annual Technical Progress Report.

Qubbaji, A.

Technical Information Center Oak Ridge Tennessee

关键词: Simulation modeling;    Diffusion;    Flames;    Natural gas;    Performance;   

RP-ID  :  DE2005838121

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

Based on the physical and computational models outlined in the previous technical progress reports, Natural gas jet diffusion flames in baseline, cascade, swirl, and swirl cascade burners were numerically modeled. The thermal, composition, and flow (velocity) fields were simulated. The temperature, CO(sub 2) and O(sub 2) concentrations, as well as the axial and radial velocity profiles were computed and analyzed. The numerical results showed that swirl and cascade burners have a more efficient fuel/air mixing, a shorter flame, and a lower NOx emission levels, compared to the baseline case. The results also revealed that the optimal configurations of the cascaded and swirling flames have not produced an improved performance when combined together in a swirl-cascade burner.