書誌事項
- タイトル別名
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- The development of the quiet flow wind tunnel for aeroacoustics.
- リュウリョク ソウオン ケンキュウヨウ ノ ムオン キリュウ フウドウ ノ カ
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For decreasing the noise of turbo-machineries, making clear the generation mechanism of fluid-dynamic noise is important and an air flow having quiet noise is very useful for the study of aerodynamic noise. A "Quiet Flow Wind Tunnel", whose measuring section is in the annechoic chamber, has been developed and established. The maximum velocity of air flow from the nozzle with a section size of 400 mm×400 mm is 42 m/s and its turbulence is less than 0.5 %. The noise levels around the measuring section are less than 48 dB(A) at a velocity of 35 m/s. By using this facility, further studies have been made, "vortex sound from crossing two cylinders", "flow-noise from finned-tube bank", "noise from ventilating-gallery", "noise of inner flow in straight ducts" etc.. It has been recognised, through these experiments, that this facility can measure both phenomena of fluid-dynamics and acoustics at the same time although these are still impossible by usual wind tunnels.
収録刊行物
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- 日本機械学会論文集B編
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日本機械学会論文集B編 53 (487), 928-932, 1987
一般社団法人 日本機械学会
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詳細情報 詳細情報について
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- CRID
- 1390001206182467840
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- NII論文ID
- 110002395980
- 130004218085
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- NII書誌ID
- AN00187441
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- ISSN
- 18848346
- 03875016
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- NDL書誌ID
- 3126319
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
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