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arXiv · 0710.5214

Multifractal detrended fluctuation analysis of combustion flames in four-burner impinging entrained-flow gasifier

Miao-Ren Niu·Wei-Xing Zhou·Zhuo-Yong Yan·Qing-Hua Guo·Qin-Feng Liang·Fu-Chen Wang·Zun-Hong Yu
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Abstract

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 $α_{\min}$ and $α_{\max}$, serving as characteristic parameters of the multifractal flames. These two characteristic multifractal parameters vary with respect to different experimental conditions.

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Miao-Ren Niu, Wei-Xing Zhou, Zhuo-Yong Yan, Qing-Hua Guo, Qin-Feng Liang, Fu-Chen Wang, Zun-Hong Yu. 2007-10-27. Multifractal detrended fluctuation analysis of combustion flames in four-burner impinging entrained-flow gasifier. https://doi.org/10.1016/j.cej.2008.04.011

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