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《Explosion and Shock Waves》 2004-01
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Fractal characteristics of flame inner flow field in methane/air explosion

YANG Yi 1,2 HE Xue qiu 1 , LIU Jian zhang 2 , WANG Cong yin 3 (1.School of Mechanics and Civil Engineering, China University of Mining and Technology, Beijing 100083, China;2.Air Force Logistic College, Xuzhou 221000, Jiangsu, China;3.Command Institute of Engineering Corps, Xuzhou 221000, Jiangsu, China)  
In this paper the microstructure of flame in methane/air explosion has been studied indetail by using high speed schlieren photographs. The experiments shows that flame inner flow field has distinctly fractal characteristics, and the fractal dimensions are different under different experimental conditions. The fractal dimensions of flame inner flow fields have remarkable effects on flame inner microstructure and flame acceleration and also are effective parameters that can reflect flame velocity.
【Fund】: 国家自然科学基金重点项目 (5 0 1 340 4 0 ) ;; 国家自然科学基金项目 (5 9874 0 2 8) ;; 国家杰出青年基金项目(5 992 5 4 1 1 )
【CateGory Index】: TD712
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