Artificial Control of the Three-Dimensionalization Process of T-S Waves in Boundary-Layer Transition
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概要
- 論文の詳細を見る
An attempt to control the three-dimensionalization process of T-S waves by utilizing the receptivity of a three-dimensional roughness element on a flat-plate boundary layer to outer acoustic disturbances is carried out by wind-tunnel experiments. The term "receptivity"^<(1)>describes the process through which external distur-bances are transformed into instability waves in a boundary layer. It is known that several types of oblique waves can be found in the three-dimensionalization process in the later stages of the boundary-layer transition. In the present experiment, we artificially introduce oblique waves in the boundary layer in order to control the boundary-layer transition. It is shown that an oblique wave can be generated in a flat-plate boundary layer with a roughness element attached to the plate inclined and an acoustic forcing. An attempt to induce three-dimensionalization modes that are observed in the later stages of boundary-layer transition is also carried out. However, the natural three-dimensional mode flow structures could not be generated by our method.
- 一般社団法人日本機械学会の論文
- 1997-11-15
著者
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KOBAYASHI Ryoji
Department of Pediatrics, Sapporo Hokuyu Hospital
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Kato Takuma
Department of Biology, Faculty of Education and Integrated Arts and Sciences, Waseda University
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Fukunishi Yu
Department of Machine Intelligence and Systems Engineering, Tohoku University
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Kato Takuma
Department Of Aeronautics And Space Engineering Graduate School Of Engineering Tohoku University
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Fukunishi Yu
Department Of Machine Intelligence And Systems Engineering Graduate School Of Engineering Tohoku Uni
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Kobayashi Ryoji
Department Of Pediatrics Graduate School Of Medicine Hokkaido University
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Kobayashi R
Senshu Univ. Ishinomaki Jpn
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Kobayashi Ryoji
Department Of Mechanical Engineering Ishinomaki Senshu University
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Kobayashi Ryoji
Department Of Chemistry Kagawa Medical University
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