Investigation on the Large-Scale Vortex Structures of the Complex Flow induced by Rotating Disks in a Non-Axisymmetric Enclosure

非轴对称外壳内旋转圆盘引起的复杂流动的大尺度涡结构研究

• 批准号: 24860041
• 负责人: SHIRAI KATSUAKI
• 金额: $ 1.91万
• 依托单位: Kobe University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Research Activity Start-up
• 财政年份: 2012
• 资助国家: 日本
• 起止时间: 2012-08-31 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-24860041/
• 关键词: 流体工学; 流れの可視化; 屈折率整合; 画像計測; 情報ストレージ機器; ハードディスクドライブ; 3次元乱流; 流体関連振動; モデル実験; 複雑流れ; せん断; 乱流

The present study aimed to clarify the onset mechanism of flow-induced vibration encountered at the flow induced by rotating disks. An experimental model was built taking into account of the non-axisymmetric shroud opening and the arm for reading/writing data existing in a hard disk drive. The complex flow structure was investigated through flow visualization under a matched refractive-index condition where the refractive index of the working fluid coincided with that of the transparent experimental flow model. In particular, the investigation focused at the polygonal flow structure formed by large-scale vortices, flow stagnation in the shroud opening and the arm wake. As a result, it was confirmed that the polygonal structure can be maintained even under the combination of the axisymmetric enclosure with the arm insertion and that the flow exhibits strong three-dimensionality influenced by the arm insertion.

本研究旨在阐明旋转圆盘诱导流动时发生流激振动的机理。建立了一个实验模型，考虑了硬盘驱动器中存在的非轴对称护罩开口和用于读/写数据的臂。在工质折射率与透明实验流动模型折射率一致的情况下，通过流动显示来研究复杂的流动结构。重点研究了由大尺度旋涡、盖板开口处的流动停滞和臂部尾迹形成的多边形流结构。结果表明，即使在轴对称封闭与插臂相结合的情况下，仍能保持多边形结构，且插臂对流场的影响具有很强的三维特性。

项目成果

An Experimental Study on the Flow Behavior near the Read-And-Write Arm in a Hard Disk Drive Model with a Shroud Opening

带护罩开口的硬盘驱动器模型中读写臂附近流动行为的实验研究

• DOI: 10.1007/s00542-013-1847-3
• 发表时间: 2013
• 期刊: Microsystem Technologies
• 作者: Katsuaki Shirai;Lars Büttner;Jürgen Czarske;Shinnosuke Obi
• 通讯作者: Shinnosuke Obi

Visualization of the Flow Behavior in a Hard Disk Drive Model with Read-And-Write Assembly and Large Stagnation Area

具有读写组件和大停滞区域的硬盘驱动器模型中流动行为的可视化

• 发表时间: 2013
• 作者: Katsuaki Shirai;Ryo Tada;Tsuyoshi Kawanami;Shigeki Hirasawa
• 通讯作者: Shigeki Hirasawa

非軸対称エンクロージャ内の回転ディスクによる複雑流れの可視化実験

非轴对称外壳中旋转圆盘复杂流动的可视化实验

• 发表时间: 2013
• 作者: S. Atsumi;T. Shikama;M. Hasuo;K. Fujii;多田遼,白井克明,川南剛,平澤茂樹
• 通讯作者: 多田遼,白井克明,川南剛,平澤茂樹

Visualization of the Complex Flow Behavior inside Non-Axisymmetric Enclosure Model of a Hard Disk Drive

硬盘驱动器非轴对称外壳模型内复杂流动行为的可视化

• 发表时间: 2013
• 作者: Ryo Tada;Katsuaki Shirai;Tsuyoshi Kawanami;Shigeki Hirasawa
• 通讯作者: Shigeki Hirasawa