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Numerical simulation and PIV measurement of the flow-field in optical disc drives

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Abstract

A system of numerical flow simulation with an automated mesh generator and parallelized solver was developed and applied to the flow-field inside an optical disc drive. In this simulation system, a uniformly spaced Cartesian grid is used to reduce time and automatically generate a mesh from CAD data for complicated geometries, such as optical disc drives. The simulation results of optical disc drives are validated by particle image velocimetry (PIV) and pressure-distribution measurements. The measured velocity distributions above a rotating disc and around a pick-up unit show quantitative agreement with the simulated distributions. For the pressure distributions on a top case of an optical disc drive, although there is an error of 10% between simulated and measured results, the position of the peaks and distribution of pressure show good agreement. Comparing both sets of measurements, the simulation results in a Cartesian grid system are sufficiently accurate to enable the flow-field to be quantitatively assessed. This numerical flow simulation is applied to investigate the detailed flow-field in a commercial optical disc drive.

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Authors and Affiliations

  1. Hitachi Ltd, Mechanical Engineering Research Laboratory, 832-2, Horiguchi, Hitachinaka, Ibaraki, 312-0034, Japan

    Nobuyuki Isoshima, Takayuki Fujimoto, Yukinobu Abe, Masatoshi Watanabe & Yoshiaki Yamauchi

Authors
  1. Nobuyuki Isoshima
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  2. Takayuki Fujimoto
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  3. Yukinobu Abe
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  4. Masatoshi Watanabe
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  5. Yoshiaki Yamauchi
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Corresponding author

Correspondence to Nobuyuki Isoshima.

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Isoshima, N., Fujimoto, T., Abe, Y. et al. Numerical simulation and PIV measurement of the flow-field in optical disc drives. Microsyst Technol 13, 923–931 (2007). https://doi.org/10.1007/s00542-006-0297-6

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  • DOI: https://doi.org/10.1007/s00542-006-0297-6

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