Mixing of Multiple Jets With a Confined Subsonic Crossflow: Part II—Opposed Rows of Orifices in Rectangular Ducts

摘要: This paper summarizes experimental and computational results on the mixing of opposed rows jets with a confined subsonic crossflow in rectangular ducts. The studies from which these were excerpted investigated flow geometric variations typical complex three-dimensional flowfield combustion chambers gas turbine engines. principal observation was that momentum-flux ratio, J, orifice spacing, S/H, most significant variables. Jet penetration critical, decreased as either ratio or spacing decreased. It also appeared jet remained similar size, shape, when inversely proportional to square-root ratio. seen planar averages must be considered context distributions. Note mass-flow ratios orifices often very large (jet-to-mainstream > 1 orifices-area-to-mainstream-cross-sectional-area up 0.5, respectively), axial planes interest just downstream trailing edge. Three-dimensional key part efficient observed for all configurations.