A numerical study on heat transfer and lubricant depletion on an anisotropic multilayer hard disk

This paper presents a numerical investigation on the effect of thermal anisotropy of the top layer alloy on heat transfer and lubricant depletion on the disk surface in a heat-assisted magnetic recording (HAMR) system. The disk consists of multilayer structures and a thin layer of lubricant on the t...

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Main Authors: Zeng, Yan, Huang, Xiaoyang, Zhou, Weidong, Yu, Shengkai
Other Authors: School of Mechanical and Aerospace Engineering
Format: Article
Language:English
Published: 2013
Online Access:https://hdl.handle.net/10356/98787
http://hdl.handle.net/10220/12535
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-987872020-03-07T13:22:15Z A numerical study on heat transfer and lubricant depletion on an anisotropic multilayer hard disk Zeng, Yan Huang, Xiaoyang Zhou, Weidong Yu, Shengkai School of Mechanical and Aerospace Engineering This paper presents a numerical investigation on the effect of thermal anisotropy of the top layer alloy on heat transfer and lubricant depletion on the disk surface in a heat-assisted magnetic recording (HAMR) system. The disk consists of multilayer structures and a thin layer of lubricant on the top surface. Cases under different laser powers and initial lubricant film thicknesses are examined. The top-layer alloy thermal anisotropy does show non-negligible effect on the heat transfer and lubricant depletion. With the top-layer alloy being more anisotropic, higher temperature increase and lager lubricant depletion can be observed on the disk surface. The results also show that the thermal anisotropy effect is more significant under a lower laser power but nearly keeps no much difference under different initial lubricant film thicknesses. Thus it is of importance to include the thermal anisotropy effect of the top-layer Co-alloy when simulating the heat transfer and lubricant depletion in practical multilayer HMAR systems, especially for the cases under the condition of lower laser power, as the effect cannot be neglected under such conditions. 2013-07-31T02:33:48Z 2019-12-06T19:59:39Z 2013-07-31T02:33:48Z 2019-12-06T19:59:39Z 2012 2012 Journal Article Zeng, Y., Huang, X. Y., Zhou, W. D.,& Yu, S. K. (2012). A numerical study on heat transfer and lubricant depletion on an anisotropic multilayer hard disk. Applied mechanics and materials, 232770-774. 1662-7482 https://hdl.handle.net/10356/98787 http://hdl.handle.net/10220/12535 10.4028/www.scientific.net/AMM.232.770 en Applied mechanics and materials
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
description This paper presents a numerical investigation on the effect of thermal anisotropy of the top layer alloy on heat transfer and lubricant depletion on the disk surface in a heat-assisted magnetic recording (HAMR) system. The disk consists of multilayer structures and a thin layer of lubricant on the top surface. Cases under different laser powers and initial lubricant film thicknesses are examined. The top-layer alloy thermal anisotropy does show non-negligible effect on the heat transfer and lubricant depletion. With the top-layer alloy being more anisotropic, higher temperature increase and lager lubricant depletion can be observed on the disk surface. The results also show that the thermal anisotropy effect is more significant under a lower laser power but nearly keeps no much difference under different initial lubricant film thicknesses. Thus it is of importance to include the thermal anisotropy effect of the top-layer Co-alloy when simulating the heat transfer and lubricant depletion in practical multilayer HMAR systems, especially for the cases under the condition of lower laser power, as the effect cannot be neglected under such conditions.
author2 School of Mechanical and Aerospace Engineering
author_facet School of Mechanical and Aerospace Engineering
Zeng, Yan
Huang, Xiaoyang
Zhou, Weidong
Yu, Shengkai
format Article
author Zeng, Yan
Huang, Xiaoyang
Zhou, Weidong
Yu, Shengkai
spellingShingle Zeng, Yan
Huang, Xiaoyang
Zhou, Weidong
Yu, Shengkai
A numerical study on heat transfer and lubricant depletion on an anisotropic multilayer hard disk
author_sort Zeng, Yan
title A numerical study on heat transfer and lubricant depletion on an anisotropic multilayer hard disk
title_short A numerical study on heat transfer and lubricant depletion on an anisotropic multilayer hard disk
title_full A numerical study on heat transfer and lubricant depletion on an anisotropic multilayer hard disk
title_fullStr A numerical study on heat transfer and lubricant depletion on an anisotropic multilayer hard disk
title_full_unstemmed A numerical study on heat transfer and lubricant depletion on an anisotropic multilayer hard disk
title_sort numerical study on heat transfer and lubricant depletion on an anisotropic multilayer hard disk
publishDate 2013
url https://hdl.handle.net/10356/98787
http://hdl.handle.net/10220/12535
_version_ 1681044552086978560