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광 디스크 드라이브 내부 유동장에 관한 연구
A Study on Flow Fields in an Optical Disc Drive

정지원   (연세대학교 대학원 기계공학과UU0000936  ); 최명렬   (Toshiba Samsung Storage Technology Korea 개발팀  ); 조형희   (연세대학교 기계공학과UU0000936  );
  • 초록

    The present study investigates flow characteristics in an optical disc drive (ODD). Detailed knowledge of the flow characteristics is essential to analyze flow-induced noise and vibration, forced convection and flow friction loss. The ODD used in a personal computer is used for the experiment and rotating velocity of disc is under the 4500 rpm. Time-resolved velocity component and velocity spectrum are obtained using the laser Doppler anemometry (LDA), and the flow patterns induced by rotating disc in the ODD are calculated by a commercial finite volume method at the same time. The results show that the front holes reduce flow-induced noise and the position of pickup body only affects flow near the window. Furthermore, it is possible for cooling of heat sources in the drive through measuring the flow fields under the tray. In addition, the numerical results are well matched up to the experimental results, therefore, the validation of the numerical results can be achieved. From the validation of numerical results, it is possible to predict the flow characteristics of the region where it is unable to conduct the experiment.


  • 주제어

    광 디스크 드라이브 .   레이저 도플러 속도계 .   유동 .   유동소음 .   열원.  

  • 참고문헌 (12)

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    10. Adrian, R. J. and Yao, C. S., 1987, 'Power Spectra of Fluid Velocities Measured by Laser Doppler Velocimetry,' Exp. in fluids, Vol. 5, pp. 17-28 
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