2009 Fiscal Year Final Research Report

measurement of amplitude modulation and dispersive effect of nonlinear resonant oscillations

Research Project

Project/Area Number	20760103
Research Category	Grant-in-Aid for Young Scientists (B)
Allocation Type	Single-year Grants
Research Field	Fluid engineering
Research Institution	Hokkaido University
Principal Investigator	KURIHARA Eru Hokkaido University, 大学院・工学研究科, 助教 (90344481)
Project Period (FY)	2008 – 2009
Keywords	音響
Research Abstract	Measurement of dispersion effect of resonant cylindrical waves is performed by using the cylindrical transducer. The amplitude modulation due to the dispersive effect of the resonant gas oscillations was found through the experiment. Spatial distribution of the resonant wave was observed by the particle in the resonator. The experiment revealed that the dispersion effect associated with the amplitude modulations. Since the period of the modulation is consistent with the results of both theoretical and numerical analysis, the presence of the dispersion effect resulting from the geometry of the sound field was shown experimentally.

(3 results)