Title :
Head-disk interface modeling with the lattice Boltzmann method
Author :
Kim, Woo Tae ; Ghai, Sartaj S. ; Zhou, Yong ; Staroselsky, Ilya ; Chen, Hudong ; Jhon, Myung S.
Author_Institution :
Dept. of Chem. Eng. & Data Storage Syst. Center, Carnegie Mellon Univ., Pittsburgh, PA, USA
Abstract :
A novel methodology based on the lattice Boltzmann method (LBM) is proposed for the prediction of air-bearing performance. We examined the feasibility of our method by using the second-order slip model as a case study. Extension of our approach using the database obtained from the Boltzmann transport equation (BTE) can be performed to develop an air-bearing design tool for complex geometry. LBM can enhance accuracy and numerical efficiency as well as easy hybridization with lubricants modeling and can be better suitable for an advanced head-disk interface (HDI) design, including the heat-assisted magnetic recording.
Keywords :
Boltzmann equation; lattice theory; magnetic disc storage; magnetic heads; magnetic recording; BTE; Boltzmann transport equation; HDI; LBM; air-bearing design tool; head-disk interface; heat-assisted magnetic recording; lattice Boltzmann method; lubricant modeling; second-order slip model; Boltzmann equation; Chemical engineering; Data storage systems; Geometry; Heat-assisted magnetic recording; Lattice Boltzmann methods; Lubricants; Magnetic analysis; Spatial databases; Surface morphology; Boltzmann transport equation (BTE); head-disk interface (HDI); lattice Boltzmann method (LBM); spatially dependent relaxation time model;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2005.855244
