H₂/Air 비예혼합화염의 화염신장율에 따른 NOx 생성특성 = NOx Formation characteristics with Strain rate in H₂/Air Nonpremixed Flames

다국어 초록 (Multilingual Abstract)

Detailed analysis of NO formation routes and its contributions with strain rate in hydrogen/air flames were numerically investigated. LiG detailed reaction mechanism have been used for calculation, which is compared with experimental data in literature. It shows good agreement with experiment for both temperature and NO mole fraction. Three routes have been found important for NO formation in hydrogen flames. These are the Thermal route, NNH route and N₂O route. Strain rate were varied to discuss the EINO reduction trend in hydrogen nonpremixed flames, which is analyzed by each NO formation routes. As a result, as the strain rate increased, EINO decrease sharply until strain rate l00(s<SUP>-1</SUP>) and decrease slowly until strain rate 310(s<SUP>-1</SUP>) again, after that EINO keeps nearly constant. It can be identified that EINO trend with the strain rate is well explained by a combination of variation of production rate of above Thermal, NNH and N₂O route. Also Result of Thermal-Mech. that include only thermal NO reaction compared with those of Full-Mech. As a result, It can be identified that there was difference at two results of calculation. It is attributed to result that Thermal-mech did not consider contributions of NNH and N₂O route. From these result, we can conclude that NOx emission characteristics of hydrogen non premixed flames should be consider contributions of above three routes simultaneously.

목차 (Table of Contents)

• ABSTRACT
• 1. 서론
• 2. 수치해석 방법
• 3. 결과 및 검토
• 4. 결론
• 후기
• 참고문헌