Hard Disk Drive (Fluid-Structure Interactions, FLUENT and ANSYS Coupling)
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:
Model both the unsteady turbulent air flow coupled with the unsteady oscillation of the arm reader (shown in green in the figure below). In this example, FLUENT was used to model the air flow and ANSYS was used to model the oscillation. MPCCI was used to couple the FLUENT and ANSYS simulations.
