HDDモデル内壁面における変動圧力計測

抄録

The air flow in a hard disk drive (HDD) is turbulent flow at high Reynolds number about 10⁵ because of high speed rotation of the disks. One of the big issues in the development of HDD is the flow induced vibration (FIV) of the disks and the head arm. Therefore, the investigation on the details of the flow structures and its relationship with FIV are of great engineering importance. In this present work, fluctuating pressure measurement on the inner wall of simplified HDD model was performed changing the parameters; arm insertion angle, arm thickness, disk rotational speed. And guessed the flow phenomena commonly observed an any HDDs by relative evaluation of the results.