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Thermal network model for temperature prediction in hard disk drive

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Abstract

In this paper, an alternative numerical method has been proposed to predict the temperature distribution in a 1.8-in. hard disk drive (HDD). Comparing it with conventional finite element model, the proposed thermal network model takes lesser time in predicting the HDD temperatures for both steady-state and transient analysis, and with good accuracy. In addition, it has been shown that this method is capable of performing temperature shock analysis.

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Abbreviations

R slab :

Thermal resistance through a slab of thickness L

k :

Thermal conductivity

A 1 :

Cross-sectional area of slab

R cyl :

Thermal resistance through a hollow cylinder

a :

Inner radius of the hollow cylinder

b :

Outer radius of the hollow cylinder

l :

Axial length of the hollow cylinder

R conv :

Thermal resistance due to convection

h :

Heat transfer coefficient due to convection

A s :

Surface area of the node subject to convection

C :

Thermal capacitance

ρ :

Density

c :

Specific heat

V :

Volume of the sub-volume

References

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Authors and Affiliations

  1. Data Storage Institute, A*STAR, 5 Engineering Drive 1, Singapore, 117608, Singapore

    Yee Leong Low, B. L. Ibrahim See, C. P. H. Tan, J. Q. Mou & E. H. Ong

Authors
  1. Yee Leong Low
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  2. B. L. Ibrahim See
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  3. C. P. H. Tan
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  4. J. Q. Mou
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  5. E. H. Ong
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Correspondence to Yee Leong Low.

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Low, Y.L., Ibrahim See, B.L., Tan, C.P.H. et al. Thermal network model for temperature prediction in hard disk drive. Microsyst Technol 15, 1653–1656 (2009). https://doi.org/10.1007/s00542-009-0866-6

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  • DOI: https://doi.org/10.1007/s00542-009-0866-6

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