탄화수소/수소/일산화탄소-공기의 예혼합화염에서 층류화염전파속도와 화염안정성

다국어 초록 (Multilingual Abstract)

To investigate cell formation in hydrocarbon/hydrogen/carbon monoxide-air premixed flames, the outward propagation and cellular instabilities were experimentally studied in a constant pressure combustion chamber at room temperature and elevated pressures. Unstretched laminar burning velocities and Markstein lengths of the mixtures were obtained by analyzing high-speed schlieren images. In this study, hydrodynamic and diffusional-thermal instabilities were evaluated to examine their effects on flame instabilities. The experimentallymeasured unstretched laminar burning velocities were compared to numerical predictions using the PREMIX code. Effective Lewis numbers of premixed flames with methane addition decreased for all of the cases; meanwhile, effective Lewis numbers with propane addition increased for lean and stoichiometric conditions and increased for rich and stoichiometric cases for hydrogen-enriched flames. With the addition of propane, the propensity for cell formation significantly was diminished, whereas cellular instabilities for hydrogen-enriched flames were promoted. However, similar behavior of cellularity was obtained with the addition of methane to the reactant mixtures.

목차 (Table of Contents)

• ABSTRACT
• 1. 서론
• 2. 실험 및 수치해석 세부사항
• 3. 셀 불안정성을 야기하는 요인
• 4. 결과 및 검토
• 5. 결론
• 후기
• 참고문헌

참고문헌 (Reference)

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