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Effect of Exit Geometry of Tail Pipe on the Performance of Pulse Jet Engines
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作者 Toshihiro NAKANO ShigeruMATSUO +1 位作者 kenbuteramoto ToshiakiSETOGUCHI 《Journal of Thermal Science》 SCIE EI CAS CSCD 2006年第3期263-268,共6页
In this paper,the effect of geometries of tube open end on the shock,compression and expansion wavespropagating in the tube was investigated numerically and experimentally.One of them is a conventional straightshock t... In this paper,the effect of geometries of tube open end on the shock,compression and expansion wavespropagating in the tube was investigated numerically and experimentally.One of them is a conventional straightshock tube with an open end.The other has a divergent tail tube at the exit.Applying a divergent tail tube(flaretube)to an open end shock tube,the period of one-cycle process could be shortened and the pressure behind theexpansion wave produced at the exit of the shock tube could be lowered much more below the atmosphericpressure than that produced in the straight tube.The results suggested that the intake air into the engine wassignificantly increased by applying a flare tube instead of a straight tube. 展开更多
关键词 compressible flow shock wave expansion wave pulse jet numerical simulation
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A Computational Investigation on the Control of Cavity-Induced Pressure Oscillations Using Sub-Cavity
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作者 Md.Mahbubul Alam ShigeruMatsuo +2 位作者 kenbuteramoto ToshiakiSetoguchi Heuy-Dong Kim 《Journal of Thermal Science》 SCIE EI CAS CSCD 2006年第3期213-219,共7页
A computational investigation has been conducted to determine the effectiveness of a passive control technique of attenuating cavity-induced pressure oscillations in a confined two-dimensional supersonic flow. The pas... A computational investigation has been conducted to determine the effectiveness of a passive control technique of attenuating cavity-induced pressure oscillations in a confined two-dimensional supersonic flow. The passive control technique is achieved by fitting two flat plates near the front wall of a square cavity at Mach number 1.83 at the cavity entrance. The results showed that the flat plates attached near the front wall of the cavity, discouraged the formation of feedback loop which is widely believed to be the reason of cavity resonance. The resultant amount of attenuation of pressure oscillations was also dependent on the length of the flat plate used as an oscillation suppressor. 展开更多
关键词 compressible flow cavity-induced pressure oscillations passive control sub-cavity
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