Measurement and analysis of flame surface density for turbulent premixed combustion on a nozzle-type burner
SCIE
SCOPUS
- Title
- Measurement and analysis of flame surface density for turbulent premixed combustion on a nozzle-type burner
- Authors
- Lee, GG; Huh, KY; Kobayashi, H
- Date Issued
- 2000-07
- Publisher
- ELSEVIER SCIENCE INC
- Abstract
- The flame surface density for turbulent premixed combustion on a nozzle-type burner is measured by planar laser-induced fluorescence (PLIF) and image processing techniques. The maximum flame surface density tends to show linear dependence on the K-factor given as a function of the integral length scale and u(0)'/S-L. The flame surface density shows an asymmetric profile in (c) over bar space with the peak location correlated in terms of the dimensionless parameter, N-B, which represents the degree of gradient or countergradient diffusion by turbulence. At values of N-B close to unity the peak occurs at a value of (c) over bar of about 0.7. As N-B increases above unity, the peak moves to a lower value in (c) over bar space, approaching a symmetric profile. The thickness of a turbulent flame brush nondimensionalized by the integral length scale tends to show linear dependence on the H-factor which is obtained by integrating the first moment equation of the reaction progress variable. The flame surface density increases at a higher ambient pressure due to decrease in the laminar burning velocity and the length scales of flame wrinkling. (C) 2000 by The Combustion Institute.
- Keywords
- EVOLUTION; EQUATION
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/19978
- DOI
- 10.1016/S0010-2180(00)00102-4
- ISSN
- 0010-2180
- Article Type
- Article
- Citation
- COMBUSTION AND FLAME, vol. 122, no. 1-2, page. 43 - 57, 2000-07
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