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Numerical Simulation of a Negative Impulsive Wave
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作者 ToshiakiSETOGUCHI ShenYU 《Journal of Thermal Science》 SCIE EI CAS CSCD 1996年第3期149-157,共9页
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 redu... 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. 展开更多
关键词 negative impulse wave active noise cancellation shock tube
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