Langmuir Slip Model for Air Bearing Simulation Using the Lattice Boltzmann Method

Author

Kim, Hyung Min ; Kim, Dehee ; Kim, Woo Tae ; Chung, Pil Seung ; Jhon, Myung S.

Author_Institution

Div. of Mech. Syst. Design Eng., Kyonggi Univ., Suwon

Volume

43

Issue

6

fYear

2007

fDate

6/1/2007 12:00:00 AM

Firstpage

2244

Lastpage

2246

Abstract

The lattice Boltzmann method (LBM) is utilized to simulate the nanoscale flow physics of air bearings in the head-disk interface. In the high Knudsen number flow analysis of air bearings, the slip boundary model is very important to guarantee the accuracy of solution. In this paper, the Langmuir slip model for the rarefied gas flow was incorporated and its feasibility and accuracy was examined in nanoscale flow simulations. It was shown that our LBM can solve the fluid flow of air bearing with high efficiency due to its complex geometry handling capability and high accuracy comparable to the Boltzmann transport equation in the slip flow regime. The LBM model developed in this paper could serve as a powerful tool for the design of advanced air-bearing systems

Keywords

Knudsen flow; flow simulation; lattice Boltzmann methods; magnetic bearings; magnetic disc storage; magnetic heads; slip flow; Boltzmann transport equation; Langmuir slip model; air bearing simulation; complex geometry handling; head-disk interface; high Knudsen number flow analysis; lattice Boltzmann method; nanoscale flow physics; nanoscale flow simulation; rarefied gas flow; slip boundary model; slip flow; Boltzmann equation; Computational modeling; Distribution functions; Fluid flow; Lattice Boltzmann methods; Lubricants; Mechanical systems; Power system modeling; Stability; Surface morphology; Air bearing; Langmuir slip model; head-disk interface; lattice Boltzmann method;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2007.893640

Filename

4202759