ノズル径の異なる対向衝突乱流噴流

抄録

The opposed turbulent jets have wide applications and are seen in combustors and impact fluidic amplifiers etc., The flow fields employed by the two nozzles which one has very small diameter and the other has very large diameter are very different for the another cases. In this case, the small jet is perfectly covered by the other large one. As a result, the boundary conditions of the small jet are under the control of the large one. Momentum of the small jet is mainly diffused by turbulent diffusion on the mixing layer. Consequently, the diffusion mechanisms are quite different with the other cases. In this article, new understanding is presented for the flow fields of the opposed turbulent jets by measurements of the static pressure fields and turbulent flow fields.