naa a22 4500 51076634X CHVBK 20180411083158.0 cr unu---uuuuu 180411e20130401xx s 000 0 eng 10.1007/s11630-013-0602-5 doi (NATIONALLICENCE)springer-10.1007/s11630-013-0602-5 Characteristic and mechanism of pressure fluctuation caused by self-induced oscillation of supersonic impinging jet [Elektronische Daten] [Tsuyoshi Yasunobu, Yumiko Otobe, Hideo Kashimura] When the underexpanded supersonic jet impinges on the obstacle, it is well known that the self-induced flow oscillation occurs. This oscillation depends on the pressure ratio in the flowfield, the position of an obstacle and is related with the noise problems of aeronautical and other industrial engineering. The characteristic and the mechanism of self-induced flow oscillation, have to be clarified to control various noise problems. But, it seems that the characteristics of the oscillated flowfield and the mechanism of an oscillation have to be more cleared to control the oscillation. This paper aims to clarify the effect of the pressure ratio and the obstacle position and the mechanism of self-induced flow oscillation by numerical analysis and experiment, when the underexpanded supersonic jet impinges on the cylindrical body. From the result of this study, it is clear that occurrence of the self-induced flow oscillation depends on the pressure balance in the flowfield. Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag Berlin Heidelberg, 2013 Supersonic Jet nationallicence Mach Disk nationallicence Barrel Shock nationallicence Flow Oscillation nationallicence Flow Visualization nationallicence Numerical Analysis nationallicence Yasunobu Tsuyoshi Department of Control & Information Systems Engineering, Kitakyushu College of Technology, Sii, 802-0985, Kokuraminami-ku, Kitakyushu-shi, Fukuoka, Japan aut Otobe Yumiko Department of Control & Information Systems Engineering, Kitakyushu College of Technology, Sii, 802-0985, Kokuraminami-ku, Kitakyushu-shi, Fukuoka, Japan aut Kashimura Hideo Department of Control & Information Systems Engineering, Kitakyushu College of Technology, Sii, 802-0985, Kokuraminami-ku, Kitakyushu-shi, Fukuoka, Japan aut Journal of Thermal Science SP Science Press 22/2(2013-04-01), 123-127 1003-2169 22:2<123 2013 22 11630 https://doi.org/10.1007/s11630-013-0602-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11630-013-0602-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Yasunobu Tsuyoshi Department of Control & Information Systems Engineering, Kitakyushu College of Technology, Sii, 802-0985, Kokuraminami-ku, Kitakyushu-shi, Fukuoka, Japan aut NATIONALLICENCE 700 1- Otobe Yumiko Department of Control & Information Systems Engineering, Kitakyushu College of Technology, Sii, 802-0985, Kokuraminami-ku, Kitakyushu-shi, Fukuoka, Japan aut NATIONALLICENCE 700 1- Kashimura Hideo Department of Control & Information Systems Engineering, Kitakyushu College of Technology, Sii, 802-0985, Kokuraminami-ku, Kitakyushu-shi, Fukuoka, Japan aut NATIONALLICENCE 773 0- Journal of Thermal Science SP Science Press 22/2(2013-04-01), 123-127 1003-2169 22:2<123 2013 22 11630 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer