2107 高速回転磁気ディスクの流体起因振動に関する研究(要旨講演,情報機器コンピュータメカニクス1)

概要

論文の詳細を見る
We have studied flow induced flutter vibration of co-rotating two disks by using LDV. It is found that the arm which is inserted between two disks suppresses the disk flutter vibration. In addition, we have also measured pressure as well as air flow velocity distribution between two disks by using the pressure sensor and the hot-wire anemometer. From the experimental results, it is found that the mean flow velocity decreases and its distribution is more uniform, while the circumferential variation of the mean static pressure and the RMS static pressure fluctuation decreases, when the arm is inserted between two disks. Therefore, it is suggested that there is the correlation among the disk flutter vibration, the circumferential variation of the mean static pressure and the pressure fluctuation between two disks, and the disk flutter can be suppressed by inserting the arm or spoiler that decreases the pressure fluctuation between two disks.
2005-03-21