首页   按字顺浏览 期刊浏览 卷期浏览 Flame Propagation Through Swirling Eddies, A Recursive Pattern
Flame Propagation Through Swirling Eddies, A Recursive Pattern

 

作者: WM. T. ASHURST,  

 

期刊: Combustion Science and Technology  (Taylor Available online 1993)
卷期: Volume 92, issue 1-3  

页码: 87-103

 

ISSN:0010-2202

 

年代: 1993

 

DOI:10.1080/00102209308907663

 

出版商: Taylor & Francis Group

 

数据来源: Taylor

 

摘要:

Computed flame motion through and between swirling eddies exhibits a maximum advancement rate which is related to the time duration of flame motion between eddies. This eddy spatial structure effect upon the apparent turbulent flame speed appears to be similar to the square-root dependence observed in wrinkled flamelet data. The rate-limiting behavior at one eddy length-scale can be removed by inclusion of smaller eddies which reside between the larger eddies. This large-eddy, small-eddy concept yields a recursion relation and repeated functional iteration can be done to approximate a desired flame speed relation. As an example, an iteration to produce STIn ST= u' is given for the range of u' observed in liquid flames. Currently, the iteration process is a post-diction of flame speed, but if a universality can be developed, then a predictive theory of turbulent flame propagation might be achieved.

 

点击下载:  PDF (307KB)



返 回