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[文献書誌] Y.Umeda and R.Ishii: "Oscillation modes of supersonic multijets" J.Acoust.Soc.America. 101. 3353-3360 (1997)
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[文献書誌] R.Ishii,Y.Umeda,S.Tanimoto,and M.Yuhi: "Generation and Convection of Vortices in Unsteady Supersonic Circular Jet" Proc.Transport Phenomenon in Thermal Science and Process Engineering (Kyoto). 251-255 (1997)
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[文献書誌] R.Ishii,Y.Umeda,M.Yuhi,and M.Saito: "Shock Wave Propagation in Stratified Dusty Gas" proc.JSME International Conference on Fluid Engineering'97 (Tokyo). 1. 407-412 (1997)
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[文献書誌] Y.Umeda and R.ishii: "Reduction of Noise Radiated from Supersonic Jet by interaction between the Screech and Cavity Tones" Proc.ASME,FEDSM'98(Washington D.C.). FEDSM98-5240 245. 1-6 (1998)
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[文献書誌] Y.Umeda,R.Ishii: "Acoustical characteristics of the noise radiated from supersonic multi-jets" Proc.16th international congress on Acoustics and 135th Meeting Acoust.Soc.America(Seattle.Wa.). 4aPAc15. 1967-1968 (1998)