Inertia effects in evaluating dynamic coefficients for thick lubricant film
In general, the dynamic coefficients of a journal or a thrust bearing are evaluated by applying the perturbation method to the steady state Reynolds equation. Since the Reynolds equation neglects the inertia of the lubricant in a thin film, the dynamic coefficients for the thick film must be evaluat...
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| creator | Junho Seo Moonho Choi YoonChul Rhim |
| description | In general, the dynamic coefficients of a journal or a thrust bearing are evaluated by applying the perturbation method to the steady state Reynolds equation. Since the Reynolds equation neglects the inertia of the lubricant in a thin film, the dynamic coefficients for the thick film must be evaluated in a different way. In this study, the dynamic coefficients evaluated by a CFD package and experiments are compared to those evaluated by applying the perturbation method to the Reynolds equation for the thick fluid film. A disk damper of an HDD is used to evaluate the dynamic coefficients experimentally. The difference of the dynamic coefficients obtained in a different way becomes larger with the thickness of the fluid film due to the inertia of the lubricant in the film. |
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Since the Reynolds equation neglects the inertia of the lubricant in a thin film, the dynamic coefficients for the thick film must be evaluated in a different way. In this study, the dynamic coefficients evaluated by a CFD package and experiments are compared to those evaluated by applying the perturbation method to the Reynolds equation for the thick fluid film. A disk damper of an HDD is used to evaluate the dynamic coefficients experimentally. The difference of the dynamic coefficients obtained in a different way becomes larger with the thickness of the fluid film due to the inertia of the lubricant in the film.</description><identifier>ISBN: 1467347345</identifier><identifier>ISBN: 9781467347341</identifier><identifier>EISBN: 9810720564</identifier><identifier>EISBN: 9789810720568</identifier><language>eng</language><publisher>IEEE</publisher><subject>Computational fluid dynamics ; computational fluid dynamics (CFD) ; disk damper ; dynamic coefficients ; Equations ; hard disk drive (HDD) ; Hard disks ; inertia effect ; Lubricants ; perturbation method ; Ports (Computers) ; Shock absorbers</subject><ispartof>2012 Digest APMRC, 2012, p.1-2</ispartof><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/6407543$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>310,311,781,785,790,791,2059,54925</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/6407543$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc></links><search><creatorcontrib>Junho Seo</creatorcontrib><creatorcontrib>Moonho Choi</creatorcontrib><creatorcontrib>YoonChul Rhim</creatorcontrib><title>Inertia effects in evaluating dynamic coefficients for thick lubricant film</title><title>2012 Digest APMRC</title><addtitle>APMRC</addtitle><description>In general, the dynamic coefficients of a journal or a thrust bearing are evaluated by applying the perturbation method to the steady state Reynolds equation. Since the Reynolds equation neglects the inertia of the lubricant in a thin film, the dynamic coefficients for the thick film must be evaluated in a different way. In this study, the dynamic coefficients evaluated by a CFD package and experiments are compared to those evaluated by applying the perturbation method to the Reynolds equation for the thick fluid film. A disk damper of an HDD is used to evaluate the dynamic coefficients experimentally. The difference of the dynamic coefficients obtained in a different way becomes larger with the thickness of the fluid film due to the inertia of the lubricant in the film.</description><subject>Computational fluid dynamics</subject><subject>computational fluid dynamics (CFD)</subject><subject>disk damper</subject><subject>dynamic coefficients</subject><subject>Equations</subject><subject>hard disk drive (HDD)</subject><subject>Hard disks</subject><subject>inertia effect</subject><subject>Lubricants</subject><subject>perturbation method</subject><subject>Ports (Computers)</subject><subject>Shock absorbers</subject><isbn>1467347345</isbn><isbn>9781467347341</isbn><isbn>9810720564</isbn><isbn>9789810720568</isbn><fulltext>true</fulltext><rsrctype>conference_proceeding</rsrctype><creationdate>2012</creationdate><recordtype>conference_proceeding</recordtype><sourceid>6IE</sourceid><sourceid>RIE</sourceid><recordid>eNotjM1KAzEURiMiaGufwE1eYCDJJDfJUoo_xUI3ui538tNenUllJhX69g4oHDiL8_FdsYV3UlglDOhrtpAabKtnzC1bTdOnEEJKAUrpO_a2KWmshDzlnEKdOBWefrA_Y6Vy4PFScKDAw2nuFCiVeZJPI69HCl-8P3cjBSyVZ-qHe3aTsZ_S6t9L9vH89L5-bba7l836cduQFKY2kLWDjEaAVCl47aNUsYXQaRdl56w11gvXWcgdamkcgo8OZ-cQQQVsl-zh75dSSvvvkQYcL3vQwhrdtr9zK0jI</recordid><startdate>201210</startdate><enddate>201210</enddate><creator>Junho Seo</creator><creator>Moonho Choi</creator><creator>YoonChul Rhim</creator><general>IEEE</general><scope>6IE</scope><scope>6IL</scope><scope>CBEJK</scope><scope>RIE</scope><scope>RIL</scope></search><sort><creationdate>201210</creationdate><title>Inertia effects in evaluating dynamic coefficients for thick lubricant film</title><author>Junho Seo ; Moonho Choi ; YoonChul Rhim</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-i105t-6f486fa50612ec949d12d36cb48d1b87757908b76fba4158a69d8a58afcd62ca3</frbrgroupid><rsrctype>conference_proceedings</rsrctype><prefilter>conference_proceedings</prefilter><language>eng</language><creationdate>2012</creationdate><topic>Computational fluid dynamics</topic><topic>computational fluid dynamics (CFD)</topic><topic>disk damper</topic><topic>dynamic coefficients</topic><topic>Equations</topic><topic>hard disk drive (HDD)</topic><topic>Hard disks</topic><topic>inertia effect</topic><topic>Lubricants</topic><topic>perturbation method</topic><topic>Ports (Computers)</topic><topic>Shock absorbers</topic><toplevel>online_resources</toplevel><creatorcontrib>Junho Seo</creatorcontrib><creatorcontrib>Moonho Choi</creatorcontrib><creatorcontrib>YoonChul Rhim</creatorcontrib><collection>IEEE Electronic Library (IEL) Conference Proceedings</collection><collection>IEEE Proceedings Order Plan All Online (POP All Online) 1998-present by volume</collection><collection>IEEE Xplore All Conference Proceedings</collection><collection>IEEE Electronic Library Online</collection><collection>IEEE Proceedings Order Plans (POP All) 1998-Present</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Junho Seo</au><au>Moonho Choi</au><au>YoonChul Rhim</au><format>book</format><genre>proceeding</genre><ristype>CONF</ristype><atitle>Inertia effects in evaluating dynamic coefficients for thick lubricant film</atitle><btitle>2012 Digest APMRC</btitle><stitle>APMRC</stitle><date>2012-10</date><risdate>2012</risdate><spage>1</spage><epage>2</epage><pages>1-2</pages><isbn>1467347345</isbn><isbn>9781467347341</isbn><eisbn>9810720564</eisbn><eisbn>9789810720568</eisbn><abstract>In general, the dynamic coefficients of a journal or a thrust bearing are evaluated by applying the perturbation method to the steady state Reynolds equation. Since the Reynolds equation neglects the inertia of the lubricant in a thin film, the dynamic coefficients for the thick film must be evaluated in a different way. In this study, the dynamic coefficients evaluated by a CFD package and experiments are compared to those evaluated by applying the perturbation method to the Reynolds equation for the thick fluid film. A disk damper of an HDD is used to evaluate the dynamic coefficients experimentally. The difference of the dynamic coefficients obtained in a different way becomes larger with the thickness of the fluid film due to the inertia of the lubricant in the film.</abstract><pub>IEEE</pub><tpages>2</tpages></addata></record> |
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| source | IEEE Electronic Library (IEL) Conference Proceedings |
| subjects | Computational fluid dynamics computational fluid dynamics (CFD) disk damper dynamic coefficients Equations hard disk drive (HDD) Hard disks inertia effect Lubricants perturbation method Ports (Computers) Shock absorbers |
| title | Inertia effects in evaluating dynamic coefficients for thick lubricant film |
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