scholarly journals Unified gas-kinetic simulation of slider air bearing

2014 ◽  
Vol 4 (2) ◽  
pp. 022001 ◽  
Author(s):  
Ruijie Wang ◽  
Kun Xu
Keyword(s):  
Kinetic Simulation ◽  
Air Bearing ◽  
Slider Air Bearing

Performance of Sliders Flying Over Discrete-Track Media

2007 ◽  
Vol 129 (4) ◽  
pp. 712-719 ◽  
Author(s):  
Jianhua Li ◽  
Junguo Xu ◽  
Yuki Shimizu
Keyword(s):  
Estimation Method ◽  
Simulation Method ◽  
Measured Data ◽  
Flying Height ◽  
Height Loss ◽  
Air Bearing ◽  
Slider Air Bearing ◽  
Discrete Track ◽  
Flying Attitude ◽  
Manufacturing Variation

A simulation method in which grooves are virtually distributed on the slider air bearing instead of on the grooved medium surface has been developed and used to investigate the performance of sliders flying over the surface of a discrete-track medium. The simulated flying height loss due to a discrete-track medium coincides well with the measured data, whereas the average-estimation method overestimates flying height loss. Among the characteristics of a slider flying over the surface of a discrete-track medium that were studied are the flying attitude, the effect of groove parameters on flying profile, and the flying height losses due to manufacturing variation and altitude. The results indicate that when a slider is flying over the surface of a discrete-track medium, it will have a higher 3σ of flying height, be more sensitive to altitude, and will have a greater flying height loss.

DIRECT algorithm and its application to slider air-bearing surface optimization

2002 ◽  
Vol 38 (5) ◽  
pp. 2168-2170 ◽  
Author(s):  
Hong Zhu ◽  
D.B. Bogy
Keyword(s):  
Direct Algorithm ◽  
Air Bearing ◽  
Bearing Surface ◽  
Slider Air Bearing ◽  
Surface Optimization

Simulation of particle rebounding from the slider air bearing surface

2016 ◽  
Vol 22 (6) ◽  
pp. 1475-1481 ◽  
Author(s):  
Sen Liu ◽  
Hui Li ◽  
Shengnan Shen ◽  
Shijing Wu
Keyword(s):  
Air Bearing ◽  
Bearing Surface ◽  
Slider Air Bearing

Pumping Effect of Slider Air Bearing Surface for Non-Langmuir Adsorption

2010 ◽  
Author(s):  
Bo Zhang ◽  
Akira Nakajima
Keyword(s):  
Disk Surface ◽  
Air Bearing ◽  
Head Disk Interface ◽  
Bearing Surface ◽  
Adsorption Model ◽  
Adsorbed Film ◽  
Disk Interface ◽  
Langmuir Adsorption ◽  
Langmuir Adsorption Model ◽  
Slider Air Bearing

Numerical analysis of the adsorbed film thickness at the air bearing surface is conducted using the non-Langmuir adsorption model. It is found that the adsorbed film at the air bearing surface becomes significant when the viscosity of adsorbed film is higher than about 1 Pa s. The adsorbed contaminant will accumulate at the rear end of the slider, and it is possible that the accumulated liquid-like contaminant may form a liquid tail which will directly contact with the disk surface, resulting in a crush of the head/disk interface.

A NEWTON-MULTIGRID METHOD FOR NUMERICAL SIMULATION OF SLIDER AIR BEARING

2005 ◽  
Vol 19 (28n29) ◽  
pp. 1647-1650
Author(s):  
HEJUN DU ◽  
QIANG LI ◽  
JOR HUAT ONG ◽  
CHANG SHU
Keyword(s):  
Numerical Simulation ◽  
Multigrid Method ◽  
Low Frequency ◽  
Least Square ◽  
Frequency Error ◽  
Air Bearing ◽  
Slider Air Bearing ◽  
Simulation Problem ◽  
Late Stages

In this paper, a Newton-Multigrid method is presented to solve the numerical simulation of the slider air bearing. For each fixed attitude in the specified grid, the Newton method is used to achieve the pressure distribution of the slider by solving the generalized Reynolds equations discretized by the least square finite difference (LSFD) method. Between the different sizes of grids, full approximation multigrid method is used to accelerate the convergence rate by eliminating the dominating low frequency error mode in the late stages of convergence. From the case study of the slider air bearing, it shows that the Newton-Multigrid method is accurate and efficient for the numerical simulation problem.

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