超音速射流火焰的DNS研究:计算方法与涡结构

DNS Analysis of a Supersonic Jet Flame:Methodology and the Vortex Structure

介绍了可压缩反应流的计算方法,然后计算了超音速射流火焰,对超音速射流火焰中的涡结构进行了分析。认为超音速射流火焰中的涡结构特征,与亚音速射流中有本质差异,且涡结构在燃料与组分的混合中起到了重要作用,进而直接影响火焰结构和燃烧效率。

For one thing, the method to compute compressible reactive flow is presented in this paper, and then, using the method, a supersonic jet flow paper was computed. As the main content of the paper, the characteristic of the vortex structure was analyzed. It was found that： in the supersonic jet reactive flow, the development of the vortex structures is very different with that in the subsonic jet flow. The vortex structure affects the mixing process, through which the flame structure and the combustion efficiency is affected.