Effect of Fluid Compressibility on the Transient Response Characteristics of Open-Type Constant Flow Hydrostatic Bearings
The present work describes an experimental and theoretical study to demonstrate the effect of fluid compressibility caused by air in the oil film on the transient performance of an open-type constant flow hydrostatic bearing. An experimental study is conducted to investigate the transient response o...
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| Veröffentlicht in: | Tribology letters 2018-03, Vol.66 (1), p.1-15, Article 9 |
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| creator | Du, Yikang Mao, Kuanmin Chen, Han Gao, Longlong Xie, Liming Yin, Ling |
| description | The present work describes an experimental and theoretical study to demonstrate the effect of fluid compressibility caused by air in the oil film on the transient performance of an open-type constant flow hydrostatic bearing. An experimental study is conducted to investigate the transient response of the hydrostatic bearing under a step force excitation, and the results demonstrate that the damping coefficient of the bearing decreases with increasing coefficient of oil compressibility when the bearing ascends, but negligible effects of compressibility are observed when the bearing descends. To analyze the mechanism of the compressibility effects due to air in the lubrication, the flow field of oil with air is numerically obtained by solving the incompressible Navier–Stokes equations, with an analytical model describing the dependence of the fluid bulk modulus on the pressure and density. Qualitative agreement between the experimental and numerical results is obtained, which indicates that an increase in the air concentration in the oil, hence a reduction in the bulk modulus of the fluid, results in transient enlargement of the mass flow rate and increased oil film thickness. This finding explains the decrease in the damping coefficient when the bearing ascends. |
| doi_str_mv | 10.1007/s11249-017-0959-9 |
| format | Article |
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An experimental study is conducted to investigate the transient response of the hydrostatic bearing under a step force excitation, and the results demonstrate that the damping coefficient of the bearing decreases with increasing coefficient of oil compressibility when the bearing ascends, but negligible effects of compressibility are observed when the bearing descends. To analyze the mechanism of the compressibility effects due to air in the lubrication, the flow field of oil with air is numerically obtained by solving the incompressible Navier–Stokes equations, with an analytical model describing the dependence of the fluid bulk modulus on the pressure and density. Qualitative agreement between the experimental and numerical results is obtained, which indicates that an increase in the air concentration in the oil, hence a reduction in the bulk modulus of the fluid, results in transient enlargement of the mass flow rate and increased oil film thickness. This finding explains the decrease in the damping coefficient when the bearing ascends.</description><identifier>ISSN: 1023-8883</identifier><identifier>EISSN: 1573-2711</identifier><identifier>DOI: 10.1007/s11249-017-0959-9</identifier><language>eng</language><publisher>New York: Springer US</publisher><subject>Bearing ; Bulk density ; Bulk modulus ; Chemistry and Materials Science ; Coefficients ; Compressibility effects ; Computational fluid dynamics ; Corrosion and Coatings ; Damping ; Dependence ; Enlargement ; Film thickness ; Fluid flow ; Incompressible flow ; Lubrication ; Mass flow rate ; Materials Science ; Nanotechnology ; Original Paper ; Physical Chemistry ; Qualitative analysis ; Surfaces and Interfaces ; Theoretical and Applied Mechanics ; Thin Films ; Transient performance ; Tribology</subject><ispartof>Tribology letters, 2018-03, Vol.66 (1), p.1-15, Article 9</ispartof><rights>Springer Science+Business Media, LLC, part of Springer Nature 2017</rights><rights>Tribology Letters is a copyright of Springer, (2017). All Rights Reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c268t-5bfa0c9ad9c538c0fafbc2580c5361935ea36059dcc49c84d2f7ed0ceca0e1ab3</cites><orcidid>0000-0002-2491-7409 ; 0000-0003-4660-702X</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s11249-017-0959-9$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s11249-017-0959-9$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,780,784,27924,27925,41488,42557,51319</link.rule.ids></links><search><creatorcontrib>Du, Yikang</creatorcontrib><creatorcontrib>Mao, Kuanmin</creatorcontrib><creatorcontrib>Chen, Han</creatorcontrib><creatorcontrib>Gao, Longlong</creatorcontrib><creatorcontrib>Xie, Liming</creatorcontrib><creatorcontrib>Yin, Ling</creatorcontrib><title>Effect of Fluid Compressibility on the Transient Response Characteristics of Open-Type Constant Flow Hydrostatic Bearings</title><title>Tribology letters</title><addtitle>Tribol Lett</addtitle><description>The present work describes an experimental and theoretical study to demonstrate the effect of fluid compressibility caused by air in the oil film on the transient performance of an open-type constant flow hydrostatic bearing. An experimental study is conducted to investigate the transient response of the hydrostatic bearing under a step force excitation, and the results demonstrate that the damping coefficient of the bearing decreases with increasing coefficient of oil compressibility when the bearing ascends, but negligible effects of compressibility are observed when the bearing descends. To analyze the mechanism of the compressibility effects due to air in the lubrication, the flow field of oil with air is numerically obtained by solving the incompressible Navier–Stokes equations, with an analytical model describing the dependence of the fluid bulk modulus on the pressure and density. Qualitative agreement between the experimental and numerical results is obtained, which indicates that an increase in the air concentration in the oil, hence a reduction in the bulk modulus of the fluid, results in transient enlargement of the mass flow rate and increased oil film thickness. This finding explains the decrease in the damping coefficient when the bearing ascends.</description><subject>Bearing</subject><subject>Bulk density</subject><subject>Bulk modulus</subject><subject>Chemistry and Materials Science</subject><subject>Coefficients</subject><subject>Compressibility effects</subject><subject>Computational fluid dynamics</subject><subject>Corrosion and Coatings</subject><subject>Damping</subject><subject>Dependence</subject><subject>Enlargement</subject><subject>Film thickness</subject><subject>Fluid flow</subject><subject>Incompressible flow</subject><subject>Lubrication</subject><subject>Mass flow rate</subject><subject>Materials Science</subject><subject>Nanotechnology</subject><subject>Original Paper</subject><subject>Physical Chemistry</subject><subject>Qualitative analysis</subject><subject>Surfaces and Interfaces</subject><subject>Theoretical and Applied Mechanics</subject><subject>Thin Films</subject><subject>Transient performance</subject><subject>Tribology</subject><issn>1023-8883</issn><issn>1573-2711</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><sourceid>AFKRA</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><recordid>eNp1kFFLwzAUhYsoOKc_wLeAz9EkbdfkUcfmhMFA5nNI0xuX0TU1yZD-e1Mq-ORTcsh3zr05WXZPySMlpHoKlLJCYEIrTEQpsLjIZrSscswqSi_TnbAcc87z6-wmhCMhycXLWTasjAEdkTNo3Z5tg5bu1HsIwda2tXFArkPxAGjvVRcsdBG9Q-hdFwAtD8orHcHbEK0OY8Suhw7vhz49JiSqhK9b9402Q-Nd0olDL6C87T7DbXZlVBvg7vecZx_r1X65wdvd69vyeYs1W_CIy9ooooVqhC5zrolRptas5CTJBRV5CSpfkFI0WhdC86JhpoKGaNCKAFV1Ps8eptzeu68zhCiP7uy7NFIyxmlOmCiqRNGJ0mnR4MHI3tuT8oOkRI4Ny6lhmRqWY8NSJA-bPKEffwT-L_l_0w-MC4EL</recordid><startdate>20180301</startdate><enddate>20180301</enddate><creator>Du, Yikang</creator><creator>Mao, Kuanmin</creator><creator>Chen, Han</creator><creator>Gao, Longlong</creator><creator>Xie, Liming</creator><creator>Yin, Ling</creator><general>Springer US</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>AFKRA</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>D1I</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>KB.</scope><scope>L6V</scope><scope>M7S</scope><scope>PDBOC</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PTHSS</scope><orcidid>https://orcid.org/0000-0002-2491-7409</orcidid><orcidid>https://orcid.org/0000-0003-4660-702X</orcidid></search><sort><creationdate>20180301</creationdate><title>Effect of Fluid Compressibility on the Transient Response Characteristics of Open-Type Constant Flow Hydrostatic Bearings</title><author>Du, Yikang ; Mao, Kuanmin ; Chen, Han ; Gao, Longlong ; Xie, Liming ; Yin, Ling</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c268t-5bfa0c9ad9c538c0fafbc2580c5361935ea36059dcc49c84d2f7ed0ceca0e1ab3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Bearing</topic><topic>Bulk density</topic><topic>Bulk modulus</topic><topic>Chemistry and Materials Science</topic><topic>Coefficients</topic><topic>Compressibility effects</topic><topic>Computational fluid dynamics</topic><topic>Corrosion and Coatings</topic><topic>Damping</topic><topic>Dependence</topic><topic>Enlargement</topic><topic>Film thickness</topic><topic>Fluid flow</topic><topic>Incompressible flow</topic><topic>Lubrication</topic><topic>Mass flow rate</topic><topic>Materials Science</topic><topic>Nanotechnology</topic><topic>Original Paper</topic><topic>Physical Chemistry</topic><topic>Qualitative analysis</topic><topic>Surfaces and Interfaces</topic><topic>Theoretical and Applied Mechanics</topic><topic>Thin Films</topic><topic>Transient performance</topic><topic>Tribology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Du, Yikang</creatorcontrib><creatorcontrib>Mao, Kuanmin</creatorcontrib><creatorcontrib>Chen, Han</creatorcontrib><creatorcontrib>Gao, Longlong</creatorcontrib><creatorcontrib>Xie, Liming</creatorcontrib><creatorcontrib>Yin, Ling</creatorcontrib><collection>CrossRef</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Materials Science Collection</collection><collection>ProQuest Central Korea</collection><collection>SciTech Premium Collection</collection><collection>Materials Science Database</collection><collection>ProQuest Engineering Collection</collection><collection>Engineering Database</collection><collection>Materials Science Collection</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>Engineering Collection</collection><jtitle>Tribology letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Du, Yikang</au><au>Mao, Kuanmin</au><au>Chen, Han</au><au>Gao, Longlong</au><au>Xie, Liming</au><au>Yin, Ling</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effect of Fluid Compressibility on the Transient Response Characteristics of Open-Type Constant Flow Hydrostatic Bearings</atitle><jtitle>Tribology letters</jtitle><stitle>Tribol Lett</stitle><date>2018-03-01</date><risdate>2018</risdate><volume>66</volume><issue>1</issue><spage>1</spage><epage>15</epage><pages>1-15</pages><artnum>9</artnum><issn>1023-8883</issn><eissn>1573-2711</eissn><abstract>The present work describes an experimental and theoretical study to demonstrate the effect of fluid compressibility caused by air in the oil film on the transient performance of an open-type constant flow hydrostatic bearing. An experimental study is conducted to investigate the transient response of the hydrostatic bearing under a step force excitation, and the results demonstrate that the damping coefficient of the bearing decreases with increasing coefficient of oil compressibility when the bearing ascends, but negligible effects of compressibility are observed when the bearing descends. To analyze the mechanism of the compressibility effects due to air in the lubrication, the flow field of oil with air is numerically obtained by solving the incompressible Navier–Stokes equations, with an analytical model describing the dependence of the fluid bulk modulus on the pressure and density. Qualitative agreement between the experimental and numerical results is obtained, which indicates that an increase in the air concentration in the oil, hence a reduction in the bulk modulus of the fluid, results in transient enlargement of the mass flow rate and increased oil film thickness. This finding explains the decrease in the damping coefficient when the bearing ascends.</abstract><cop>New York</cop><pub>Springer US</pub><doi>10.1007/s11249-017-0959-9</doi><tpages>15</tpages><orcidid>https://orcid.org/0000-0002-2491-7409</orcidid><orcidid>https://orcid.org/0000-0003-4660-702X</orcidid></addata></record> |
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| subjects | Bearing Bulk density Bulk modulus Chemistry and Materials Science Coefficients Compressibility effects Computational fluid dynamics Corrosion and Coatings Damping Dependence Enlargement Film thickness Fluid flow Incompressible flow Lubrication Mass flow rate Materials Science Nanotechnology Original Paper Physical Chemistry Qualitative analysis Surfaces and Interfaces Theoretical and Applied Mechanics Thin Films Transient performance Tribology |
| title | Effect of Fluid Compressibility on the Transient Response Characteristics of Open-Type Constant Flow Hydrostatic Bearings |
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