2017 Fiscal Year Final Research Report
Investigation of mode conpetition phenomena in rotating flows
| Project/Area Number |
15K05791
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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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| Research Field |
Fluid engineering
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| Research Institution | Nagoya University |
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Principal Investigator |
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| Co-Investigator(Renkei-kenkyūsha) |
TOYA Yorinobu 長野工業高等専門学校, 機械工学科, 教授 (40180187)
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| Research Collaborator |
Furukawa Hiroyuki
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Keywords | 回転流 / 流れモード / モード競合 / 分岐 / 回転円板 / 回転円柱 |
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| Outline of Final Research Achievements |
The flow modes found in the flows around a rotating disk in a cylindrical casing and the flow between two rotating disks are studied. The modes of the free surface flows between vertical two rotating cylinders are also investigated. The flow field has limited boundaries in the axial and radial directions, and the interaction among the flows in the layers near the boundaries and the centrifugal effect make a complex three-dimensional flow structures. The flows starting from a stationary state are affected by the initial vortices appearing in these layers and the instability and they are led the final state via various developing processes. The scenario describing the flow evolutions is clarified in the flows around a disk. In the flow between two disks and the flow in the vertical cylinders, the visualization information and image processing are used to classify the flow modes.
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| Free Research Field |
流体工学
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