G241 円筒波および球面波の非線形共鳴現象における周期的な振幅の変調(G-24 波動・音・衝撃波(4),一般講演)

概要

論文の詳細を見る
The resonant phenomenon of the cylindrical or spherical wave is different from that of the plane wave. For the resonance of the plane wave, it is known that a shock wave is formed even if the amplitude of the sound source is rather small. In contrast to the plane wave, however, the resonance of the cylindrical or spherical wave does not show such a discontinuity and then the response amplitude reaches the cubic root of the amplitude of the sound source. Moreover, in this case, a periodical amplitude modulation is observed. In this study, an equation for the response amplitude is derived by using the method of multiple scales. The result shows that a solution of the equation involves the periodical modulation.
日本流体力学会の論文
2004-08-09