2016 Fiscal Year Final Research Report
Investigation of the flow behavior and fluid body force around an arm inserted into a flow driven by rotating disks mounted in an enclosure
| Project/Area Number |
26820048
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Fluid engineering
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| Research Institution | Kobe University |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Keywords | 回転流 / 容器内流れ / PIV計測 / 屈折率整合 / コリオリ力 / ハードディスクドライブ / 流体機械 / 情報ストレージ機器 |
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| Outline of Final Research Achievements |
In the experiment, measurement system was built to investigate the flow velocity fields based on particle image analysis in a transparent experimental model with refractive index matched working fluid. The resulting velocity fields in the planes parallel to the disk surfaces revealed the mechanism of complex behavior of the flow undergoing acceleration and deceleration during the disk revolution. The flow velocities were found to locally exceeded that of the solid body rotation of the disks. The acceleration and deceleration are attributed to the arm insertion and shroud opening. The acceleration and deceleration induced by these factors occur separately in different flow areas. Numerical simulation of the unsteady flow was performed using the configuration identical to that of the experiment. Validity of the simulation was analyzed through the comparison of the results with the experimental ones. The results indicate that the simulation may supplement the experiment in certain extent.
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| Free Research Field |
熱流体工学
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