流体工学部門講演会講演論文集
Online ISSN : 2424-2896
セッションID: 909
会議情報
909 物体に衝突する不足膨張噴流に関する研究(2)(OS9-2 高速流れと衝撃波現象の解明と制御,OS9高速流れと衝撃波現象の解明と制御)
遠藤 正樹榊原 洋子岩本 順二郎
著者情報
会議録・要旨集 フリー

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抄録
An underexpanded jet is utilized in industries as well as aviation field, e.g. to cool a body by the jet impingement, to remove molten metal in laser cutting, etc. One of the biggest problems is noise radiating from the jet which has high frequency, or screech tone. It is pointed out that the noise is closely related to the structure of the jet. In this paper, the underexpanded jets on a plate and hemispheres of different radii are visualized using the shadowgraph method so as to analyze the jet structure, especially a plate shock formed above the body. As a result, the radius of the hemisphere is found to have an effect not on the shape greatly, but on location of the plate shock.
著者関連情報
© 2006 一般社団法人 日本機械学会
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