Transactions of the Japan Society of Mechanical Engineers Series B
Online ISSN : 1884-8346
Print ISSN : 0387-5016
Emission of a Propagating Shock Wave from an Open End of a Tube : (Effects of Diameter of Flange on Magnitude of Impulsive Wave)
Hideo KASHIMURAToshiaki SETOGUCHIHeuy Dong KIMYong-Hum KWEONKazuyasu MATSUO
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1999 Volume 65 Issue 633 Pages 1665-1670

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Abstract

When a shock wave propagates along a constant-area straight tube and reaches open end, an impulsive wave is emitted outward from the tube exit toward the surrounding area. In order to clarify the effects of diameter of a flange at the tube exit, experimental and numerical investigations have been carried out. A simple open-ended shock tube with the flange of the various diameter at the tube exit was used. The magnitude of an impulsive wave, the attenuation with distance and its directivity are discussed with the experimental results. As the results, the effect of the diameter of flange on the magnitude of an impulsive wave was shown. Finally, the effective equations concern with the magnitude of an impulsive wave generated by the emission of a shock wave were obtained from the numerical results solved by the TVD scheme.

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