Numerical Modeling for the Characterization of Flow Excitation for the HDD Disk Vibration Control

摘要

This article presents a modeling method for air flow analysis of a hard disk drive. Air flow citation causes disk vibration that aggravates TMR budget of the design of modern high nee hard drives. And it is the most expensive budget consumer so that controlling of the r becomes the primary design issue of the data storage industry. In the presented work, air flow citation forces are characterized by LES modeling and the results are verified with experiments. A ijueeze-film-type disk damper is employed in the experiments and it is applied for a hardware design ovement for disk flutter reduction. LES and RANS are compared and alternately used in a ilculation in order to minimize computational efforts.