A study on the flow friction loss of a shrouded rotating disk

밀폐된 단일 회전 원판 주위의 유동손실에 관한 연구

  • 조성욱 (연세대학교 대학원 기계공학과) ;
  • 임윤철 (연세대학교 기계전자공학부)
  • Published : 2001.11.01

Abstract

The fundamental fluid mechanics associated with the rotation of a smooth plane disk enclosed within a cylindrical chamber have been studied experimentally. In order to acquire systematic information pertinent to this problem torque and friction loss data were obtained over a wide range of disk Reynolds numbers for axial clearance-disk radius ratio H/R from 0.025 to 0.2 and radial tip gap-disk radius ratio s/R from 0.021 to 0.105. Loss analysis of hard disk drive(HDD) is presented to describe the contribution of windage loss of a rotating disk. The minimum loss from factor of HDD can be obtained from this analysis at each operation conditions.

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