| Item type |
会議発表論文 / Conference Paper(1) |
| 公開日 |
2010-12-14 |
| タイトル |
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タイトル |
[N355] Experimental and Numerical Study of Spatial Coherence of Surface Pressure on a Square Cylinder for Numerical Aerodynamic Noise Prediction |
| 言語 |
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言語 |
eng |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_5794 |
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資源タイプ |
conference paper |
| 著者 |
大嶋, 拓也
Oshima, Takuya
関根, 秀久
Sekine, Hidehisa
寺尾, 道仁
Terao, Michihito
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| 抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
Aerodynamic noises from building exterior subsidiaries such as balusters or louver fins exposed to strong winds give serious psychological impact to inhabitants. To reduce required resources for three-dimensional aeroacoustic source computation of such two-dimensional bodies, an estimation
method of full-span acoustic intensity from a partial-span computation has been formerly
presented by one of the authors. The method has stood on an unproved assumption that the real part of complex coherence of surface pressure as function of spanwise distance obeys Gaussian function, which is examined experimentally and computationally in this investigation.
The experiments are conducted in a low-noise wind tunnel using a square-cylindrical test body in which surface pressure sensors are embedded. In computations, a Large Eddy Simulation with the standard Smagorinsky model is employed. Reynolds numbers range from 4620 to 9240 and the angles of attack from 0 to 30 degrees. The results tell that in all cases the real parts of complex coherences fit well with Gaussian function especially at K´arm´an frequencies. Although coherent structures also agreed qualitatively between experiments and computations, large discrepancies are found in coherent lengths. The investigation of the cause remains as future work. |
| 内容記述 |
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内容記述タイプ |
Other |
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内容記述 |
会議名称：The 32nd International Congress and Exposition on Noise Control Engineering |
| 内容記述 |
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内容記述タイプ |
Other |
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内容記述 |
主催学会：KSNVE/ASK |
| 書誌情報 |
Inter-noise 2003 : August 25-28, 2003 international convention center jeju seogwipo, Korea
p. 1737-1744,
発行日 2003
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| ISBN |
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識別子タイプ |
ISBN |
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関連識別子 |
8995218916 |
| 著者版フラグ |
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出版タイプ |
VoR |
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出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| 出版者 |
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出版者 |
Institute of Noise Control Engineering |
| 資源タイプ |
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内容記述タイプ |
Other |
|
内容記述 |
Article |
19-2 inter･noise200308-2.pdf (604.1 kB)
