2012 Fiscal Year Final Research Report
Three-Dimensional Investigation of the Sound Sources with a High Spatial Resolution in Supersonic Jet Noise Using the Optical CT Microphone
| Project/Area Number |
22686078
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| Research Category |
Grant-in-Aid for Young Scientists (A)
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| Allocation Type | Single-year Grants |
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| Research Field |
Aerospace engineering
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| Research Institution | Gunma University |
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Principal Investigator |
ARAKI Mikiya 群馬大学, 大学院・工学研究科, 准教授 (70344926)
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| Project Period (FY) |
2010 – 2012
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| Keywords | ジェット騒音 / 音源探査 / 非接触計測 / CT / シュリーレン / 騒音低減 |
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| Research Abstract |
In the present study, 'light' is applied to 'acoustic' measurements. 'Acoustic wave' is a pressure oscillation, and the density fluctuates at the same time. Here, a CT (computed tomography) is applied to the optical technique, and the 'optical CT microphone' is developed, which realizes non-intrusive and three-dimensional measurements with a high spatial resolution. An aerospike nozzle with a complicated three dimensionalconfiguration is tested, and the relationship between the source structure of the jet noise and their acoustic radiation was investigated.
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