| Numerical Simulation of a Negative Impulsive Wave |
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| 作者姓名： | ToshiakiSETOGUCHI ShenYU |
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| 作者单位： | Toshiaki SETOGUCHI;Manabu TAKAO (Department of Mechanical Engmeering，Saga University，Honjo-machi，Saga-shi，Saga，840，Japan)Shen YU(Institute of Engineering Thermophysics，Chinese Academy of Sciences，P.O. Box 2706，Beijing 100080，China)Hiroyuki HIRAH |
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| 摘 要： | ＮｕｍｅｒｉｃａｌＳｉｍｕｌａｔｉｏｎｏｆａＮｅｇａｔｉｖｅＩｍｐｕｌｓｉｖｅＷａｖｅＴｏｓｈｉａｋｉＳＥＴＯＧＵＣＨＩ；ＭａｎａｂｕＴＡＫＡＯ（ＤｅｐａｒｔｍｅｎｔｏｆＭｅｃｈａｎｉｃａｌＥｎｇｍｅｅｒｉｎｇ，ＳａｇａＵｎｉｖｅｒｓｉｔｙ，Ｈｏｎｊ...
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| 关 键 词： | 铁路 有害冲击波 数字模拟 |
| 收稿时间： | 15 July 1996 |
Numerical simulation of a negative impulsive wave |
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| Toshiaki Setoguchi,Manabu Takao,Shen Yu,Hiroyuki Hirahara.Numerical Simulation of a Negative Impulsive Wave[J].Journal of Thermal Science,1996,5(3):149-157. |
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| Authors: | Toshiaki Setoguchi Manabu Takao Shen Yu Hiroyuki Hirahara |
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| Affiliation: | (1) Department of Mechanical Engineering, Saga University, Honjo-machi, Saga-shi, 840 Saga, Japan;(2) Institute of Engineering Thermophysics, Chinese Academy of Sciences, P.O. Box 2706, 100080 Beijing, China;(3) Department of Mechanical Engineering, Saitama University, Shimookubo, Urawa-shi, 255 Saitama, Japan |
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| Abstract: | A compression wave discharged from an open end of a tube causes positive impulsive noise. Active noise cancellation which is the canceling of the noise by the addition of an inverse wave is a useful technique for reducing impulsive noise. The main objective of this study is to present the design for a negative impulsive wave generator utilizing unsteady mass influx. In this paper, in order to clarify the relationship between the unsteady mass influx and the negative impulsive wave! numerical and aeroacoustic analyses have been carried out using an unsteady expansion wave discharged from an open end of a shock tube. As a result, the effect of an unsteady expansion wave on a negative impulsive wave was clarified. |
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| Keywords: | negative impulse wave active noise cancellation shock tube |
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