Flow of elasto-viscoplastic thixotropic liquids past a confined cylinder
► Numerical results for the flow of elasto-viscoplastic thixotropic liquids past a confined cylinder are presented. ► The effect of thixotropy and elasticity on the flow pattern is analized in detail. ► The performance of a recently proposed constitutive model for elasto-viscoplastic thixotropic liq...
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Veröffentlicht in: | Journal of non-Newtonian fluid mechanics 2013-03, Vol.193, p.80-88 |
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container_title | Journal of non-Newtonian fluid mechanics |
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creator | Fonseca, Cleiton Frey, Sérgio Naccache, Mônica F. de Souza Mendes, Paulo R. |
description | ► Numerical results for the flow of elasto-viscoplastic thixotropic liquids past a confined cylinder are presented. ► The effect of thixotropy and elasticity on the flow pattern is analized in detail. ► The performance of a recently proposed constitutive model for elasto-viscoplastic thixotropic liquids is investigated for a wide range of the relevant parameters.
A numerical investigation of elasto-viscoplastic thixotropic liquids flowing past a cylinder confined in a parallel-plate channel is performed, using a recently proposed constitutive equation. The conservation equations are solved using a four-field Galerkin least-squares formulation in terms of the extra-stress, pressure, velocity, and structure parameter – a scalar quantity that represents the structuring level of the material microstructure. The focus is on determining the effect of both thixotropy and elasticity on the topology of yielded and unyielded regions of the channel. The effect on the cylinder drag coefficient is also studied. Relevant ranges of the dimensionless relaxation time and equilibrium time of the material structure are investigated. The numerical results reveal striking effects of thixotropy and elasticity. The trends observed are physically sound and in accordance with the related literature. |
doi_str_mv | 10.1016/j.jnnfm.2012.08.007 |
format | Article |
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A numerical investigation of elasto-viscoplastic thixotropic liquids flowing past a cylinder confined in a parallel-plate channel is performed, using a recently proposed constitutive equation. The conservation equations are solved using a four-field Galerkin least-squares formulation in terms of the extra-stress, pressure, velocity, and structure parameter – a scalar quantity that represents the structuring level of the material microstructure. The focus is on determining the effect of both thixotropy and elasticity on the topology of yielded and unyielded regions of the channel. The effect on the cylinder drag coefficient is also studied. Relevant ranges of the dimensionless relaxation time and equilibrium time of the material structure are investigated. The numerical results reveal striking effects of thixotropy and elasticity. The trends observed are physically sound and in accordance with the related literature.</description><identifier>ISSN: 0377-0257</identifier><identifier>EISSN: 1873-2631</identifier><identifier>DOI: 10.1016/j.jnnfm.2012.08.007</identifier><language>eng</language><publisher>Elsevier B.V</publisher><subject>Channels ; Constitutive relationships ; Cylinders ; Elasticity ; Mathematical models ; Relaxation time ; Structured fluids ; Thixotropic liquids ; Thixotropy ; Upper-convected Maxwell-type model</subject><ispartof>Journal of non-Newtonian fluid mechanics, 2013-03, Vol.193, p.80-88</ispartof><rights>2012 Elsevier B.V.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c336t-a0f7853c00090fc8749041447d4fa27d1636358941d2ef7711689ae0fb532cbe3</citedby><cites>FETCH-LOGICAL-c336t-a0f7853c00090fc8749041447d4fa27d1636358941d2ef7711689ae0fb532cbe3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.jnnfm.2012.08.007$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,777,781,3537,27905,27906,45976</link.rule.ids></links><search><creatorcontrib>Fonseca, Cleiton</creatorcontrib><creatorcontrib>Frey, Sérgio</creatorcontrib><creatorcontrib>Naccache, Mônica F.</creatorcontrib><creatorcontrib>de Souza Mendes, Paulo R.</creatorcontrib><title>Flow of elasto-viscoplastic thixotropic liquids past a confined cylinder</title><title>Journal of non-Newtonian fluid mechanics</title><description>► Numerical results for the flow of elasto-viscoplastic thixotropic liquids past a confined cylinder are presented. ► The effect of thixotropy and elasticity on the flow pattern is analized in detail. ► The performance of a recently proposed constitutive model for elasto-viscoplastic thixotropic liquids is investigated for a wide range of the relevant parameters.
A numerical investigation of elasto-viscoplastic thixotropic liquids flowing past a cylinder confined in a parallel-plate channel is performed, using a recently proposed constitutive equation. The conservation equations are solved using a four-field Galerkin least-squares formulation in terms of the extra-stress, pressure, velocity, and structure parameter – a scalar quantity that represents the structuring level of the material microstructure. The focus is on determining the effect of both thixotropy and elasticity on the topology of yielded and unyielded regions of the channel. The effect on the cylinder drag coefficient is also studied. Relevant ranges of the dimensionless relaxation time and equilibrium time of the material structure are investigated. The numerical results reveal striking effects of thixotropy and elasticity. The trends observed are physically sound and in accordance with the related literature.</description><subject>Channels</subject><subject>Constitutive relationships</subject><subject>Cylinders</subject><subject>Elasticity</subject><subject>Mathematical models</subject><subject>Relaxation time</subject><subject>Structured fluids</subject><subject>Thixotropic liquids</subject><subject>Thixotropy</subject><subject>Upper-convected Maxwell-type model</subject><issn>0377-0257</issn><issn>1873-2631</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2013</creationdate><recordtype>article</recordtype><recordid>eNp9kD1PwzAQhi0EEuXjF7BkZEnwxYmdDAyoohSpEgvMlmufhaM0Tu200H-PS5m55U66972Ph5A7oAVQ4A9d0Q2D3RQlhbKgTUGpOCMzaATLS87gnMwoEyKnZS0uyVWMHU1RMz4jy0XvvzJvM-xVnHy-d1H78Vg7nU2f7ttPwY-p7t1250zMxtTKVKb9YN2AJtOH3g0Gww25sKqPePuXr8nH4vl9vsxXby-v86dVrhnjU66oFU3NdNrfUqsbUbW0gqoSprKqFAY446xu2gpMiVYIAN60Cqld16zUa2TX5P40dwx-u8M4yU06GfteDeh3UQLjNYAAypOUnaQ6-BgDWjkGt1HhIIHKIzfZyV9u8shN0kYmbsn1eHJh-mLvMMioHQ4ajQuoJ2m8-9f_A5g7dyA</recordid><startdate>201303</startdate><enddate>201303</enddate><creator>Fonseca, Cleiton</creator><creator>Frey, Sérgio</creator><creator>Naccache, Mônica F.</creator><creator>de Souza Mendes, Paulo R.</creator><general>Elsevier B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7TB</scope><scope>7U5</scope><scope>8FD</scope><scope>FR3</scope><scope>H8D</scope><scope>KR7</scope><scope>L7M</scope></search><sort><creationdate>201303</creationdate><title>Flow of elasto-viscoplastic thixotropic liquids past a confined cylinder</title><author>Fonseca, Cleiton ; Frey, Sérgio ; Naccache, Mônica F. ; de Souza Mendes, Paulo R.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c336t-a0f7853c00090fc8749041447d4fa27d1636358941d2ef7711689ae0fb532cbe3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2013</creationdate><topic>Channels</topic><topic>Constitutive relationships</topic><topic>Cylinders</topic><topic>Elasticity</topic><topic>Mathematical models</topic><topic>Relaxation time</topic><topic>Structured fluids</topic><topic>Thixotropic liquids</topic><topic>Thixotropy</topic><topic>Upper-convected Maxwell-type model</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Fonseca, Cleiton</creatorcontrib><creatorcontrib>Frey, Sérgio</creatorcontrib><creatorcontrib>Naccache, Mônica F.</creatorcontrib><creatorcontrib>de Souza Mendes, Paulo R.</creatorcontrib><collection>CrossRef</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Civil Engineering Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of non-Newtonian fluid mechanics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Fonseca, Cleiton</au><au>Frey, Sérgio</au><au>Naccache, Mônica F.</au><au>de Souza Mendes, Paulo R.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Flow of elasto-viscoplastic thixotropic liquids past a confined cylinder</atitle><jtitle>Journal of non-Newtonian fluid mechanics</jtitle><date>2013-03</date><risdate>2013</risdate><volume>193</volume><spage>80</spage><epage>88</epage><pages>80-88</pages><issn>0377-0257</issn><eissn>1873-2631</eissn><abstract>► Numerical results for the flow of elasto-viscoplastic thixotropic liquids past a confined cylinder are presented. ► The effect of thixotropy and elasticity on the flow pattern is analized in detail. ► The performance of a recently proposed constitutive model for elasto-viscoplastic thixotropic liquids is investigated for a wide range of the relevant parameters.
A numerical investigation of elasto-viscoplastic thixotropic liquids flowing past a cylinder confined in a parallel-plate channel is performed, using a recently proposed constitutive equation. The conservation equations are solved using a four-field Galerkin least-squares formulation in terms of the extra-stress, pressure, velocity, and structure parameter – a scalar quantity that represents the structuring level of the material microstructure. The focus is on determining the effect of both thixotropy and elasticity on the topology of yielded and unyielded regions of the channel. The effect on the cylinder drag coefficient is also studied. Relevant ranges of the dimensionless relaxation time and equilibrium time of the material structure are investigated. The numerical results reveal striking effects of thixotropy and elasticity. The trends observed are physically sound and in accordance with the related literature.</abstract><pub>Elsevier B.V</pub><doi>10.1016/j.jnnfm.2012.08.007</doi><tpages>9</tpages></addata></record> |
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subjects | Channels Constitutive relationships Cylinders Elasticity Mathematical models Relaxation time Structured fluids Thixotropic liquids Thixotropy Upper-convected Maxwell-type model |
title | Flow of elasto-viscoplastic thixotropic liquids past a confined cylinder |
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