Hard Disk Drive (Detailed Unsteady Turbulent Flow Modeling)
Problem description:
Minimizing the hard disk arm vibration is essential to increase the reliability and durability of hard disk drives (HDD).
Challenge:
Predict the flow induced vibration of the rotating disk in a hard disk drive. The vibration is because of the unsteady fluid structure interaction between the air flow and arm reader. The flow induced by the rotation of the disk spans all known flow regimes from being laminar around the center of rotation to fully turbulent near the outer rim of the disk. Complex unsteady flow structures are formed.
Solution:
To accurately model the complex flow structures that are formed, detailed turbulent flow modeling is required. Large Eddie Simulation (LES) represents a viable tool to capture these flow structures.
