2023 Fiscal Year Final Research Report
Creation of suction flow direction control function by using excited jets for development of fluid manipulator
| Project/Area Number |
21K03862
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 19010:Fluid engineering-related
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| Research Institution | Tokyo City University |
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Principal Investigator |
Nishibe Koichi 東京都市大学, 理工学部, 准教授 (10707277)
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| Co-Investigator(Kenkyū-buntansha) |
佐藤 光太郎 工学院大学, 工学部, 教授 (80252625)
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| Project Period (FY) |
2021-04-01 – 2024-03-31
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| Keywords | 吸引流 / シンセティックジェット / ハイブリッドシンセティックジェット / 流体制御 / 非定常流 / 流体マニピュレータ |
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| Outline of Final Research Achievements |
To develop a fluid manipulation technique for non-contact manipulation of floating objects by using jets and suction, we have attempted remote suction using excited jets generated from asymmetric subslots with time-varying velocity.
As a result, we succeeded in generating a jet partition that limits the suction range by using a hybrid synthetic jet, which is a type of excitation jet, and a continuous jet. The velocity near the wall surface, which was located far from the suction slot, was increased compared to the case of suction flow by itself. The relationship between the geometrical conditions of the slot and the frequency of the excited jet was also discussed.
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| Free Research Field |
流体工学
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| Academic Significance and Societal Importance of the Research Achievements |
吸引流は指向性が無いため，掃除機や口腔外バキュームなど固形物を吸引する際には，被吸引物近傍にノズルやカバーなど追加構造物を設置する必要がある．そのため，システムとして小型化が難しいことからその応用範囲は限定的である．本研究で得られた成果を応用・発展することで，カバー等の追加構造物が不要な小型吸引システムの開発が進み，家電製品や航空機の失速制御に留まらず様々な分野の応用が進むと考えられる．例えば，ノズルの形状が一定のまま励起噴流の振動数を調整することで，固形物の非接触吸引が可能となり，より衛生的な環境が求められる医学や食品分野などへの応用が期待される．
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