Hybrid continuum-DSMC and particle-laden flow modeling in the Head-Disk Interface gap

Author

Benzi, John ; Damodaran, M.

Author_Institution

Div. of Thermal & Fluids Eng., Nanyang Technol. Univ., Singapore

fYear

2009

fDate

14-16 Jan. 2009

Firstpage

1

Lastpage

2

Abstract

Airflow modeling in the vicinity of the Head-Disk Interface (HDI) gap in a modern Hard Disk Drive (HDD) enclosure using the DSMC method is discussed. A hybrid continuum-DSMC model based on the Schwarz Alternating method is employed to couple the rarefied flow in the HDI region which is modeled by the DSMC method to the continuum flow outside the slider modeled by Navier-Stokes equation. Modeling of particle-laden flow in the HDI gap is also described in this work. A two-phase model has been incorporated in a parallel three dimensional DSMC method to enable computation of particle trajectories in the HDI gap.

Keywords

Monte Carlo methods; Navier-Stokes equations; disc drives; hard discs; magnetic heads; rarefied fluid dynamics; Navier-Stokes equation; Schwarz Alternating method; airflow modeling; direct simulation Monte Carlo method; head-disk interface gap; hybrid continuum-DSMC; parallel 3D DSMC method; particle trajectories; particle-laden flow modeling; rarefied flow; two-phase model; Birds; Boundary conditions; Computer crashes; Concurrent computing; Contamination; Disk drives; Hard disks; Modems; Navier-Stokes equations; Thermal engineering; Hard Disk Drive; Head-Disk Interface Gap; Hybrid Continuum-DSMC; Schwarz coupling; Two-Phase DSMC;

fLanguage

English

Publisher

ieee

Conference_Titel

Magnetic Recording Conference, 2009. APMRC '09. Asia-Pacific

Conference_Location

Singapore

Print_ISBN

978-9810-82191-3

Type

conf

DOI

10.1109/APMRC.2009.4925411

Filename

4925411