2009 Fiscal Year Final Research Report
measurement of amplitude modulation and dispersive effect of nonlinear resonant oscillations
| Project/Area Number |
20760103
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Fluid engineering
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| Research Institution | Hokkaido University |
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Principal Investigator |
KURIHARA Eru Hokkaido University, 大学院・工学研究科, 助教 (90344481)
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| Project Period (FY) |
2008 – 2009
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| Keywords | 音響 |
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| 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.
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