Influence of Amplitude of Excited Secondary Flow on the Direction of Jets
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- ZHANG Qiang
- Graduate School of Mechanical Engineering, Kogakuin University
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- TAMANOI Yu
- Graduate School of Mechanical Engineering, Kogakuin University
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- KANG Donghyuk
- Department of Mechanical Engineering, Saitama University
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- NISHIBE Koichi
- Department of Mechanical Engineering, Tokyo City University
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- YOKOTA Kazuhiko
- Department of Mechanical Engineering, Aoyama Gakuin University
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- SATO Kotaro
- Department of Mechanical System Engineering, Kogakuin University
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説明
<p>In this research, a method for direction control of a primary jet with a Coanda surface is investigated as part of a fundamental study of fluidic thrust vectoring. The effect of the velocity amplitude ratio (i.e., ratio of time-averaged velocity to velocity fluctuation amplitude) of the secondary flow on the flow characteristics of the jet was experimentally investigated. It was determined that the jet deflection angle was maximized under the suction condition wherein the secondary flow exhibited velocity fluctuation. The relationship between the jet deflection angle and the momentum ratio between the primary jet and the secondary flow is presented, in which the dimensionless frequency of the secondary flow was used as a parameter. Although the jet deflection angle depended on the dimensionless frequency and the momentum ratio, it was difficult to adjust this parameter using only the momentum ratio in the hypothetical saturated region where this ratio is large. In addition, unsteady characteristics were also discussed for several conditions.</p>
収録刊行物
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- TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES
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TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES 66 (2), 37-45, 2023
一般社団法人 日本航空宇宙学会
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詳細情報 詳細情報について
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- CRID
- 1390295336734763264
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- ISSN
- 21894205
- 05493811
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- Crossref
- OpenAIRE
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- 抄録ライセンスフラグ
- 使用不可
