Title :
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
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;
Conference_Titel :
Magnetic Recording Conference, 2009. APMRC '09. Asia-Pacific
Conference_Location :
Singapore
Print_ISBN :
978-9810-82191-3
DOI :
10.1109/APMRC.2009.4925411
