Physics – Fluid Dynamics
Scientific paper
2007-10-27
Chemical Engineering Journal 143(1-3), 230-235 (2008)
Physics
Fluid Dynamics
9 Elsart pages including 7 eps figures
Scientific paper
10.1016/j.cej.2008.04.011
On a laboratory-scale testing platform of impinging entrained-flow gasifier with four opposed burners, the flame images for diesel combustion and gasification process were measured with a single charge coupled device (CCD) camera. The two-dimensional multifractal detrended fluctuation analysis was employed to investigate the multifractal nature of the flame images. Sound power-law scaling in the annealed average of detrended fluctuations was unveiled when the order $q>0$ and the multifractal feature of flame images were confirmed. Further analyses identified two multifractal parameters, the minimum and maximum singularity $\alpha_{\min}$ and $\alpha_{\max}$, serving as characteristic parameters of the multifractal flames. These two characteristic multifractal parameters vary with respect to different experimental conditions.
Guo Qing-Hua
Liang Qin-Feng
Niu Miao-Ren
Wang Fu-Chen
Yan Zhuo-Yong
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