• 제목/요약/키워드: Activation Energy Asymptotics (AEA)

검색결과 3건 처리시간 0.016초

활성화에너지점근법의 재고찰 (II) - 예혼합화염영역에서 확산화염구조 (Activation Energy Asymptotics Revisited (II) - Diffusion-Flame Structure in the Premixed-Flame Regime)

  • 김종수
    • 한국연소학회지
    • /
    • 제9권4호
    • /
    • pp.35-46
    • /
    • 2004
  • Activation energy asymptotics (AEA) for Linan#s premixed-flame regime is revisited in this paper. First, the detailed AEA procedure for the premixed-flame regime is demonstrated, so that the practitioners of AEA could easily apply the method to their own problems. In addition, the controversies surrounding the premixed-flame regime, namely the closure controversy and fast-time instability paradox, are explained. Finally, the limitation of AEA, mainly arising from the wrong prediction of fuel leakage through the reaction zone, is examined and the Zel#dovich-Linan kinetics is introduced as an alternative to meet the needs of modern combustion analysis, where the detailed chemical structure of flame is demanded.

  • PDF

활성화에너지점근법의 재고찰 (I);확산화염의 준정상소화조건 (Activation Energy Asymptotics Revisited (I);Quasisteady Extinction conidtion of Diffusion Flames)

  • 김종수
    • 한국연소학회:학술대회논문집
    • /
    • 한국연소학회 2004년도 제28회 KOSCO SYMPOSIUM 논문집
    • /
    • pp.124-132
    • /
    • 2004
  • Activation energy asymptotics (AEA) for Linan's diffusion-flame regime is revisited in this paper. The main purpose of the paper is to carefully re-examine each AEA analysis step in order to clarify the some concepts that are often misunderstood among the ordinary practitioners of the AEA. Particular attention is focused on the different AEA regimes arising from the double limit of large Zel'dovich and Damkohler numbers. In addition. the expansion procedures are shown in detail and the method that the turning point condition, commonly known as the Linan's extinction condition, is found is explained.

  • PDF

활성화에너지점근법의 재고찰(I) - 확산화염의 준정상소화조건 (Activation Energy Asymptotics Revisited (I) - Quasisteady Extinction Conidtion of Diffusion Flames)

  • 김종수
    • 한국연소학회지
    • /
    • 제9권2호
    • /
    • pp.1-9
    • /
    • 2004
  • Activation energy asymptotics (AEA) for Linan#s diffusion-flame regime is revisited in this paper. The main purpose of the paper is to carefully re-examine each AEA analysis step in order to clarify the some concepts that are often misunderstood among the ordinary practitioners of the AEA. Particular attention is focused on the different AEA regimes arising from the double limit of large Zel#dovich and Damkohler numbers. In addition, the expansion procedures are shown in detail and the method that the turning point condition, commonly known as the Linan#s extinction condition, is found is explained.

  • PDF