旋回を伴う二重同軸超音速噴流に関する実験的研究(流体工学,流体機械)

概要

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The present study addressed an experimental investigation of the near field flow structures of supersonic, dual, coaxial, swirl jet. The swirl stream was discharged from the secondary annular nozzle and primary inner nozzle provided the sonic and supersonic free jets. The pressure ratios of the secondary swirl and primary sonic/supersonic jets were varied below 7.0. Experiments were conducted to investigate the effects of the secondary swirl stream on the primary sonic and supersonic jets, compared with the secondary stream of no swirl. The results showed that the presence of annular swirl stream causes the Mach disk to move more downstream, with the increased diameter, and remarkably reduces the fluctuations of the Pitot pressures in the supersonic dual coaxial jet, compared with the case of the secondary annular stream of no swirl.
一般社団法人日本機械学会の論文
2004-03-25