[가솔린엔진] 화염면적밀도 측정에 의한 난류예혼합 특성 연구 = Investigation on the Characteristics of Turbulent Premixed Flames by Measuring the Flame Surface Density

다국어 초록 (Multilingual Abstract)

The flame surface density for turbulent premixed combustion in a nozzle-type burner is measured by PLIF(Planar Laser Induced Fluorescence) and image processing techniques. The maximum flame surface density shows linear dependence on the K-factor defined as a function of the integral length scale and ??. The flame surface density shows an asymmetric profile with respect to the reaction progress variable(?? ) with the peak location correlated in terms of the dimensionless parameter, NB, which represents the degree of gradient or counter-gradient diffusion by turbulence. At the NB close to unity the peak occurs at the ?? of about 0.65. As the NB increases above unity, the peak moves to a lower value in the ?? space approaching a symmetric profile. The flame surface density increases at a higher ambient pressure due to decrease in the laminar flame speed and the length scales of flame wrinkling and turbulence.

목차 (Table of Contents)

• ABSTRACT
  
• 1.서론
  
• 2.화염면적밀도의 천이방정식과 모델
  
• 3.실험장치 및 조건
  
• 4.화염가시화 이미지처리기법
  
• 5.결과
  
• 6.결론
  
• 후기
  
• 참고문헌