정보저장시스템학회:학술대회논문집
- 정보저장시스템학회 2005년도 추계학술대회 논문집
- /
- Pages.242-245
- /
- 2005
장애물이 없는 3.5' 동시회전 디스크의 유동교란에 관한 수치적 연구
Numerical Simulation toy Flow Disturbance Between 3.5' Co-rotating Disks Unobstructed in Shroud
초록
The rotating flow in the space between co-rotating disks is of considerable importance in information storage systems. Hard disk drivers(HDD) in computer are used extensively as data storage capacity. The trend in the computer industry to produce smaller disk drives rotating at higher speed requires an improved understanding of fluid motion in the space between disks. In this study, we have tried LES model for inner-disk flowfield to investigate the flow disturbance and the flow structure driven by co-rotating disks. The boundary pattern between inner region and outer region obtained lobe-shape structure clearly and its number has been validated on experimental data by our previous study. We obtain the spectra of velocity and pressure components with several frequencies. We revealed there are two kinds of disturbances, one is global wave propagation and another is local wave propagation on Ekman boundary layer.