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http://dx.doi.org/10.9725/kstle.2003.19.5.292

A Study on the Flow Friction Loss of a Shrouded Rotating Disk  

조성욱 (삼성전자(주) DA 연구소)
임윤철 (연세대학교 기계전자공학부)
Publication Information
Tribology and Lubricants / v.19, no.5, 2003 , pp. 292-297 More about this Journal
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 form factor of HDD can be obtained from this analysis at each operation conditions.
Keywords
HDD(Hard disk drive); disk/spindle system; torque; friction loss; flexible disk windage;
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