一様流に対向する噴流の拡散

概要

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The flow fields of the jets opposed into uniform streams include very large diffusion. Investigation of those flow fields is important to estimate the characteristic of a high performance combustor and diffusion of the jets etc. Many researchers have reported the fact that those flow fields were characterized by the re-circulation zones shown by turning back streamlines and the stagnation points. In those flow fields, however, we cannot find increasing of static pressure due to change the direction of streamlines. On the contrary, the decreasing of static pressure is seen in the flow field. Now we attempt to explain these experimental results by characteristic of the structure of turbulence in the mixing layer of the jets. In this article, the diffusion of the jets is investigated by introducing relative diffusion and interaction between the turbulence in the mixing layer of the jets and that in the outer flows in view of chaotic feature.
社団法人日本航空宇宙学会の論文
2002-01-05