Fractal Characteristics of Thin Thermal Mixing Layers in Coal-Fired Flame

Bai, Xiaojing and Lu, Gang and Yan, Yong (2017) Fractal Characteristics of Thin Thermal Mixing Layers in Coal-Fired Flame. Journal of Combustion Science and Technology, 3 . pp. 225-230. ISSN 1006-8740. (doi:https://doi.org/10.11715/rskxjs.R201606021) (Full text available)

Abstract

The images of turbulent flame were acquired by using a digital imaging system on an industry-scale pulverized coal-fired test rig.The fractal dimensions of thin thermal mixing layers in flame were computed through morphology-based flame image processing techniques.The effects of the ratios of primary air and secondary/tertiary air on fractal dimensions were characterized.The results presented in this work show that the variations of fractal dimension are closely related to the ratio changes of primary air and secondary/tertiary air. Therefore,the fractal dimensions of flame thin thermal mixing layers can be used as an important indicator for the control and optimization of a combustion process.

Item Type: Article
Uncontrolled keywords: coal-fired flame; thin thermal mixing layers; fractal dimension; flame image; temperature gradient
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA166 Instrumentation
T Technology > TA Engineering (General). Civil engineering (General) > TA1637 Image Analysis, Image Processing
T Technology > TD Environmental technology. Sanitary engineering
Divisions: Faculties > Sciences > School of Engineering and Digital Arts
Faculties > Sciences > School of Engineering and Digital Arts > Instrumentation, Control and Embedded Systems
Depositing User: Gang Lu
Date Deposited: 19 Sep 2017 10:16 UTC
Last Modified: 20 Sep 2017 12:35 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/63478 (The current URI for this page, for reference purposes)
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