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Simplified Second Order Model of Reynolds Equation for Simulating the Ultra-Thin Air Bearing Film in Hard Disk Drivers

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Abstract:

To more accurately simulate the pressure distribution of the ultra-thin air bearing film, Reynolds equation must be modified to account for the gas rarefaction effect. Starting from a widely used model of Reynolds equation, a new simplified second order model is proposed to simulate the ultra-thin air bearing film in hard disk drives. The new model of Reynolds equation possesses simpler mathematical form than that of the previous model. The new model is solved using a least square finite difference method and the resultant numerical results are compared with those of the previous model. The computational efficiencies of the new model and the previous model are also compared.

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Periodical:

Applied Mechanics and Materials (Volumes 117-119)

Pages:

570-573

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.117-119.570

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Online since:

October 2011

Authors:

Jia Dong Ji, B.J. Shi, Ting Yi Yang, Ji Yong Wang

Keywords:

Air Bearing Film, Gas Rarefaction Effect, Hard Disk Drivers (HDDs), Least Square Finite Difference (LSFD) Method, Reynolds Equation

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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