超音速異種ガス乱流混合層の数値解析 : 第2報, 非一様流の混合特性

概要

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A numerical technique for investigating the mixing characteristics of supersonic turbulent flow with different gas species, in which a two-equation turbulence model was employed, was presented in the first report. In the previous report, uniform inlet flow profiles are assumed for both high-speed and low-speed side gases. In this report, in order to clarify the effect of inlet flow profiles on the mixing phenomena, distributed flow profiles obtained for a supersonic wedge-type nozzle outlet are adopted as the inlet boundary conditions of mixing calculation. The general conclusion is that the values of mixing layer thickness with distributed inlet flow profiles are wider than those with uniform profiles. Also the growth rates of mixing layers with distributed inlet flow profiles plotted against the change of velocity ratio, and density ratio have a similar tendency to those with uniform profiles.
社団法人日本機械学会の論文
1992-08-25