A211 超音速噴流に及ぼす反射板の影響に関する実験的研究(OS-7&8 対流による熱伝達特性制御I)

概要

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The present study describes an experimental work to investigate the effect of a nozzle exit reflector on supersonic jet that is discharged from a convergent-divergent nozzle. An annular reflector is installed at the nozzle exit and its diameter is varied. Flow visualization and impact pressure measurement are accomplished. The results obtained show that the presence of reflector at the nozzle exit leads to increased oscillation of supersonic jet. For imperfectly-expanded jets, the reflector substantially increases the jet mixing and reduces the supersonic length of the jet. The reflector effect appears more significantly in imperfectly-expanded jets that have strong shock cell structures, but is negligible in correctly-expanded jet.
社団法人日本機械学会の論文
2005-11-02