Title :
Thousand-Fold Oil-Air Interface Scale-Up in Fluid Dynamic Bearings of Hard Disk Drives
Author :
Hendriks, Ferdinand
Author_Institution :
Hitachi Global Storage Technol., San Jose, CA
Abstract :
Research and development of fluid dynamic bearings (FDBs) of hard disk drives is hampered by their geometry which ranges from fractions of micrometers to millimeters. A 1000 X scale-up of the oil-air interface in a single land/groove section of an FDB affords excellent optical access to flow details, while preserving the Reynolds number and Capillary number. The main penalty for this convenience is an inability to maintain the Bond number. The experiment also serves to validate computational fluid dynamic work, based on the volume of fluid method. A direct comparison is presented
Keywords :
capillarity; computational fluid dynamics; disc drives; flow; hard discs; Bond number; Reynolds number; capillary number; computational fluid dynamics; fluid dynamic bearings; hard disk drives; oil-air interface; Bonding; Fluid dynamics; Geometrical optics; Geometry; Hard disks; Image motion analysis; Petroleum; Research and development; Rotors; Stators; Bearings; capillary instability; disk drives; hydrodynamics;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2006.878643
