Heterogeneity-induced retraction in viscoelastic fluids following cessation of flow
Complex fluids including colloidal suspensions, microgels, and entangled wormlike micelles (WLMs) can develop heterogeneous flow regions under imposed steady shear. In some of these systems, the evolution to this flow state from rest is accompanied by flow reversal - when a portion of the fluid move...
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| creator | McCauley, Patrick J Kumar, Satish Calabrese, Michelle A |
| description | Complex fluids including colloidal suspensions, microgels, and entangled wormlike micelles (WLMs) can develop heterogeneous flow regions under imposed steady shear. In some of these systems, the evolution to this flow state from rest is accompanied by flow reversal - when a portion of the fluid moves opposite to the imposed flow direction. Flow reversal was proposed to occur in shear startup when (1) the fluid has significant elasticity, and (2) the flow becomes heterogeneous immediately following the stress overshoot [McCauley
et al.
,
J. Rheol.
, 2023,
67
, 661-681]. To verify this hypothesis, a new method is developed for measuring flow heterogeneity. Upon cessation of the imposed flow, elasticity and flow heterogeneity cause retraction of the fluid, which is quantified with particle tracking velocimetry. Flow is stopped at key times during shear startup in two systems: a gel-like WLM that exhibits flow reversal before heterogeneous flow and a viscoelastic, fluid-like WLM that does not. The degree of flow heterogeneity is inferred from the shape and magnitude of velocity profiles measured during retraction. Flow heterogeneity develops earlier in gel-like WLMs - supporting the proposed flow reversal criteria. For comparison, heterogeneous Couette flows described with the upper-convected Maxwell or Germann-Cook-Beris models are analyzed. These theoretical flow problems confirm that stark differences in rheological properties across the flow geometry can cause significant fluid retraction and reproduce key features of the experimentally observed retraction. This new method can be used to extract quantitative information about spatially heterogeneous flows in viscoelastic complex fluids, whether or not flow reversal occurs.
Complex fluids including entangled wormlike micelles (WLMs) can develop heterogeneous flow regions in steady shear flow. We show that flow heterogeneity in WLMs can cause significant retraction of the fluid upon cessation of the imposed flow. |
| doi_str_mv | 10.1039/d4sm00203b |
| format | Article |
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et al.
,
J. Rheol.
, 2023,
67
, 661-681]. To verify this hypothesis, a new method is developed for measuring flow heterogeneity. Upon cessation of the imposed flow, elasticity and flow heterogeneity cause retraction of the fluid, which is quantified with particle tracking velocimetry. Flow is stopped at key times during shear startup in two systems: a gel-like WLM that exhibits flow reversal before heterogeneous flow and a viscoelastic, fluid-like WLM that does not. The degree of flow heterogeneity is inferred from the shape and magnitude of velocity profiles measured during retraction. Flow heterogeneity develops earlier in gel-like WLMs - supporting the proposed flow reversal criteria. For comparison, heterogeneous Couette flows described with the upper-convected Maxwell or Germann-Cook-Beris models are analyzed. These theoretical flow problems confirm that stark differences in rheological properties across the flow geometry can cause significant fluid retraction and reproduce key features of the experimentally observed retraction. This new method can be used to extract quantitative information about spatially heterogeneous flows in viscoelastic complex fluids, whether or not flow reversal occurs.
Complex fluids including entangled wormlike micelles (WLMs) can develop heterogeneous flow regions in steady shear flow. We show that flow heterogeneity in WLMs can cause significant retraction of the fluid upon cessation of the imposed flow.</description><identifier>ISSN: 1744-683X</identifier><identifier>EISSN: 1744-6848</identifier><identifier>DOI: 10.1039/d4sm00203b</identifier><identifier>PMID: 38809054</identifier><language>eng</language><publisher>England: Royal Society of Chemistry</publisher><subject>Colloids ; Couette flow ; Elasticity ; Flow ; Flow geometry ; Fluid flow ; Heterogeneity ; Information processing ; Micelles ; Particle tracking ; Particle tracking velocimetry ; Rheological properties ; Shear ; Velocity distribution ; Viscoelastic fluids ; Viscoelasticity</subject><ispartof>Soft matter, 2024-06, Vol.2 (23), p.4567-4582</ispartof><rights>Copyright Royal Society of Chemistry 2024</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c296t-de1aeaf2c5722cfb76dc394d06d35ecc2e0eef52901af8def8e6436a4e010d073</cites><orcidid>0000-0003-0829-6355 ; 0000-0003-4577-6999 ; 0000-0003-4168-8983</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27915,27916</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/38809054$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>McCauley, Patrick J</creatorcontrib><creatorcontrib>Kumar, Satish</creatorcontrib><creatorcontrib>Calabrese, Michelle A</creatorcontrib><title>Heterogeneity-induced retraction in viscoelastic fluids following cessation of flow</title><title>Soft matter</title><addtitle>Soft Matter</addtitle><description>Complex fluids including colloidal suspensions, microgels, and entangled wormlike micelles (WLMs) can develop heterogeneous flow regions under imposed steady shear. In some of these systems, the evolution to this flow state from rest is accompanied by flow reversal - when a portion of the fluid moves opposite to the imposed flow direction. Flow reversal was proposed to occur in shear startup when (1) the fluid has significant elasticity, and (2) the flow becomes heterogeneous immediately following the stress overshoot [McCauley
et al.
,
J. Rheol.
, 2023,
67
, 661-681]. To verify this hypothesis, a new method is developed for measuring flow heterogeneity. Upon cessation of the imposed flow, elasticity and flow heterogeneity cause retraction of the fluid, which is quantified with particle tracking velocimetry. Flow is stopped at key times during shear startup in two systems: a gel-like WLM that exhibits flow reversal before heterogeneous flow and a viscoelastic, fluid-like WLM that does not. The degree of flow heterogeneity is inferred from the shape and magnitude of velocity profiles measured during retraction. Flow heterogeneity develops earlier in gel-like WLMs - supporting the proposed flow reversal criteria. For comparison, heterogeneous Couette flows described with the upper-convected Maxwell or Germann-Cook-Beris models are analyzed. These theoretical flow problems confirm that stark differences in rheological properties across the flow geometry can cause significant fluid retraction and reproduce key features of the experimentally observed retraction. This new method can be used to extract quantitative information about spatially heterogeneous flows in viscoelastic complex fluids, whether or not flow reversal occurs.
Complex fluids including entangled wormlike micelles (WLMs) can develop heterogeneous flow regions in steady shear flow. We show that flow heterogeneity in WLMs can cause significant retraction of the fluid upon cessation of the imposed flow.</description><subject>Colloids</subject><subject>Couette flow</subject><subject>Elasticity</subject><subject>Flow</subject><subject>Flow geometry</subject><subject>Fluid flow</subject><subject>Heterogeneity</subject><subject>Information processing</subject><subject>Micelles</subject><subject>Particle tracking</subject><subject>Particle tracking velocimetry</subject><subject>Rheological properties</subject><subject>Shear</subject><subject>Velocity distribution</subject><subject>Viscoelastic fluids</subject><subject>Viscoelasticity</subject><issn>1744-683X</issn><issn>1744-6848</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><recordid>eNpd0U1LxDAQBuAgit8X70rBiwjVSZOm6VHXT1A8qOCtZJOJZGmbNWld_Pd2d3UFTwnMw8vwDiEHFM4osPLc8NgAZMDGa2SbFpynQnK5vvqzty2yE-MEgElOxSbZYlJCCTnfJs932GHw79ii675S15peo0kCdkHpzvk2cW3y6aL2WKvYOZ3YuncmJtbXtZ-59j3RGKNaUG-HqZ_tkQ2r6oj7P-8ueb25fhndpQ9Pt_eji4dUZ6XoUoNUobKZzoss03ZcCKNZyQ0Iw3LUOkNAtHlWAlVWGrQSBWdCcQQKBgq2S06WudPgP3qMXdUMi2JdqxZ9HysGghaS80IM9Pgfnfg-tMN2cyWKnJb5PPB0qXTwMQa01TS4RoWvikI1r7q64s-Pi6ovB3z0E9mPGzQr-tvtAA6XIES9mv7din0DOIGEnQ</recordid><startdate>20240612</startdate><enddate>20240612</enddate><creator>McCauley, Patrick J</creator><creator>Kumar, Satish</creator><creator>Calabrese, Michelle A</creator><general>Royal Society of Chemistry</general><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QF</scope><scope>7QO</scope><scope>7QQ</scope><scope>7SC</scope><scope>7SE</scope><scope>7SP</scope><scope>7SR</scope><scope>7TA</scope><scope>7TB</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>F28</scope><scope>FR3</scope><scope>H8D</scope><scope>H8G</scope><scope>JG9</scope><scope>JQ2</scope><scope>KR7</scope><scope>L7M</scope><scope>L~C</scope><scope>L~D</scope><scope>P64</scope><scope>7X8</scope><orcidid>https://orcid.org/0000-0003-0829-6355</orcidid><orcidid>https://orcid.org/0000-0003-4577-6999</orcidid><orcidid>https://orcid.org/0000-0003-4168-8983</orcidid></search><sort><creationdate>20240612</creationdate><title>Heterogeneity-induced retraction in viscoelastic fluids following cessation of flow</title><author>McCauley, Patrick J ; Kumar, Satish ; Calabrese, Michelle A</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c296t-de1aeaf2c5722cfb76dc394d06d35ecc2e0eef52901af8def8e6436a4e010d073</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2024</creationdate><topic>Colloids</topic><topic>Couette flow</topic><topic>Elasticity</topic><topic>Flow</topic><topic>Flow geometry</topic><topic>Fluid flow</topic><topic>Heterogeneity</topic><topic>Information processing</topic><topic>Micelles</topic><topic>Particle tracking</topic><topic>Particle tracking velocimetry</topic><topic>Rheological properties</topic><topic>Shear</topic><topic>Velocity distribution</topic><topic>Viscoelastic fluids</topic><topic>Viscoelasticity</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>McCauley, Patrick J</creatorcontrib><creatorcontrib>Kumar, Satish</creatorcontrib><creatorcontrib>Calabrese, Michelle A</creatorcontrib><collection>PubMed</collection><collection>CrossRef</collection><collection>Aluminium Industry Abstracts</collection><collection>Biotechnology Research Abstracts</collection><collection>Ceramic Abstracts</collection><collection>Computer and Information Systems Abstracts</collection><collection>Corrosion Abstracts</collection><collection>Electronics & Communications Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>Materials Business File</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>ANTE: Abstracts in New Technology & Engineering</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Copper Technical Reference Library</collection><collection>Materials Research Database</collection><collection>ProQuest Computer Science Collection</collection><collection>Civil Engineering Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Computer and Information Systems Abstracts Academic</collection><collection>Computer and Information Systems Abstracts Professional</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>MEDLINE - Academic</collection><jtitle>Soft matter</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>McCauley, Patrick J</au><au>Kumar, Satish</au><au>Calabrese, Michelle A</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Heterogeneity-induced retraction in viscoelastic fluids following cessation of flow</atitle><jtitle>Soft matter</jtitle><addtitle>Soft Matter</addtitle><date>2024-06-12</date><risdate>2024</risdate><volume>2</volume><issue>23</issue><spage>4567</spage><epage>4582</epage><pages>4567-4582</pages><issn>1744-683X</issn><eissn>1744-6848</eissn><abstract>Complex fluids including colloidal suspensions, microgels, and entangled wormlike micelles (WLMs) can develop heterogeneous flow regions under imposed steady shear. In some of these systems, the evolution to this flow state from rest is accompanied by flow reversal - when a portion of the fluid moves opposite to the imposed flow direction. Flow reversal was proposed to occur in shear startup when (1) the fluid has significant elasticity, and (2) the flow becomes heterogeneous immediately following the stress overshoot [McCauley
et al.
,
J. Rheol.
, 2023,
67
, 661-681]. To verify this hypothesis, a new method is developed for measuring flow heterogeneity. Upon cessation of the imposed flow, elasticity and flow heterogeneity cause retraction of the fluid, which is quantified with particle tracking velocimetry. Flow is stopped at key times during shear startup in two systems: a gel-like WLM that exhibits flow reversal before heterogeneous flow and a viscoelastic, fluid-like WLM that does not. The degree of flow heterogeneity is inferred from the shape and magnitude of velocity profiles measured during retraction. Flow heterogeneity develops earlier in gel-like WLMs - supporting the proposed flow reversal criteria. For comparison, heterogeneous Couette flows described with the upper-convected Maxwell or Germann-Cook-Beris models are analyzed. These theoretical flow problems confirm that stark differences in rheological properties across the flow geometry can cause significant fluid retraction and reproduce key features of the experimentally observed retraction. This new method can be used to extract quantitative information about spatially heterogeneous flows in viscoelastic complex fluids, whether or not flow reversal occurs.
Complex fluids including entangled wormlike micelles (WLMs) can develop heterogeneous flow regions in steady shear flow. We show that flow heterogeneity in WLMs can cause significant retraction of the fluid upon cessation of the imposed flow.</abstract><cop>England</cop><pub>Royal Society of Chemistry</pub><pmid>38809054</pmid><doi>10.1039/d4sm00203b</doi><tpages>16</tpages><orcidid>https://orcid.org/0000-0003-0829-6355</orcidid><orcidid>https://orcid.org/0000-0003-4577-6999</orcidid><orcidid>https://orcid.org/0000-0003-4168-8983</orcidid></addata></record> |
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| source | Royal Society Of Chemistry Journals 2008-; Alma/SFX Local Collection |
| subjects | Colloids Couette flow Elasticity Flow Flow geometry Fluid flow Heterogeneity Information processing Micelles Particle tracking Particle tracking velocimetry Rheological properties Shear Velocity distribution Viscoelastic fluids Viscoelasticity |
| title | Heterogeneity-induced retraction in viscoelastic fluids following cessation of flow |
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