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Translated from Nensho no Kagaku to Gijutsu, 1, 37 (1992) Fractal Behaviour of Wrinkled Laminar Flame

 

作者: AKIRA YOSHIDA,   YOSHIHIKO ANDO,   TADASHI YANAGISAWA,   HIROSHI TSUJI,  

 

期刊: Combustion Science and Technology  (Taylor Available online 1994)
卷期: Volume 96, issue 1-3  

页码: 121-134

 

ISSN:0010-2202

 

年代: 1994

 

DOI:10.1080/00102209408935350

 

出版商: Taylor & Francis Group

 

关键词: Combustion;Premised Combustion;Gaseous Fuel;Turbulent Combustion;Fractal;Wrinkled Laminar Flame

 

数据来源: Taylor

 

摘要:

The unbumed gas region of wrinkled laminar flame stabilized on a Bunsen burner was visualized by a laser tomography and the fractal analysis was applied to the boundaries of unbumed gas to characterize the geometry of wrinkled laminar flame. The fractal dimension of the wrinkled laminar flame front is independent of any scale of the unbumed mixture turbulence. It increases with the turbulence intensity from 2.20 to 2.32 and approaches at high intensity turbulence to 2.36 which is the fractal dimension of the non-reactive turbulent flow. The existence of inner and outer cut-offs is clearly shown. Both cut-ofls are also independent of any scale of unbumed mixture turbulence. The inner cut-off coincides with the scale of wrinkles caused by the laminar flame instability and the outer cut-off is determined by the flame base diameter.

 

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