Pressure drop in a split‐and‐recombine caterpillar micromixer in case of newtonian and non‐newtonian fluids
Identifieur interne : 000230 ( Istex/Corpus ); précédent : 000229; suivant : 000231Pressure drop in a split‐and‐recombine caterpillar micromixer in case of newtonian and non‐newtonian fluids
Auteurs : Odile Carrier ; Denis Funfschilling ; Hélène Debas ; Souhila Poncin ; Patrick Löb ; Huai-Zhi LiSource :
- AIChE Journal [ 0001-1541 ] ; 2013-07.
English descriptors
- KwdEn :
- Aiche, Aiche july, Carbopol, Caterpillar, Caterpillar micromixer, Characteristic elongational time, Chem, Color figure, Continuous phase, Cpmm, Deborah number, Different paam solutions, Effective shear rate, Elongational, Emkarox, Excess pressure drop, Friction factor, Friction factor scales, Generalized reynolds number, Hessel, Impeller, July, Laminar, Laminar regime, Micromixer, Micromixers, Microreactors, Mixer, Newtonian, Online, Online issue, Paam, Paam solutions, Porous media, Pressure drop, Pressure loss, Repl, Reynolds number, Reynolds numbers, Shear rate, Static mixer, Static mixers, Uids, Viscoelastic, Viscoelastic solutions.
- Teeft :
- Aiche, Aiche july, Carbopol, Caterpillar, Caterpillar micromixer, Characteristic elongational time, Chem, Color figure, Continuous phase, Cpmm, Deborah number, Different paam solutions, Effective shear rate, Elongational, Emkarox, Excess pressure drop, Friction factor, Friction factor scales, Generalized reynolds number, Hessel, Impeller, July, Laminar, Laminar regime, Micromixer, Micromixers, Microreactors, Mixer, Newtonian, Online, Online issue, Paam, Paam solutions, Porous media, Pressure drop, Pressure loss, Repl, Reynolds number, Reynolds numbers, Shear rate, Static mixer, Static mixers, Uids, Viscoelastic, Viscoelastic solutions.
Abstract
Microreactors are very promising tools for the design of future chemical processes. For example, emulsions of very narrow size distribution are obtained at much lower energy consumption than the one spent with usual processes. Micromixers play thereby an eminent role. The goal of this study is to better understand the hydrodynamic properties of a split‐and‐recombine Caterpillar micromixer (CPMM) specially with regard to handling viscoelastic fluids, a topic hardly addressed so far in the context of micromixers in general, although industrial fluids like detergent, cosmetic, or food emulsions are non‐Newtonian. Friction factor was measured in a CPMM for both Newtonian and non‐Newtonian fluids. For Newtonian fluids, the friction factor in the laminar regime is f/2 = 24/Re. The laminar regime exists up to Reynolds numbers of 15. For shear‐thinning fluids like Carbopol 940 or viscoelastic fluids like Poly Acryl Amide (PAAm) aqueous solutions, the friction factor scales identically within statistical errors up to a generalized Reynolds number of 10 and 0.01, respectively. Above that limit, there is an excess pressure drop for the viscoelastic PAAm solution. This excess pressure drop multiplies the friction factor by more than a decade over a decade of Reynolds numbers. The origin of this excess pressure drop is the high elongational flow present in the Caterpillar static mixer applied to a highly viscoelastic fluid. This result can be extended to almost all static mixers, because their flows are generally highly elongational. © 2013 American Institute of Chemical Engineers AIChE J, 59: 2679–2685, 2013
Url:
DOI: 10.1002/aic.14035
Links to Exploration step
ISTEX:AE13B0FA8604A28BA657C726DD3836D9B3E2E868Le document en format XML
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number</term><term>Hessel</term><term>Impeller</term><term>July</term><term>Laminar</term><term>Laminar regime</term><term>Micromixer</term><term>Micromixers</term><term>Microreactors</term><term>Mixer</term><term>Newtonian</term><term>Online</term><term>Online issue</term><term>Paam</term><term>Paam solutions</term><term>Porous media</term><term>Pressure drop</term><term>Pressure loss</term><term>Repl</term><term>Reynolds number</term><term>Reynolds numbers</term><term>Shear rate</term><term>Static mixer</term><term>Static mixers</term><term>Uids</term><term>Viscoelastic</term><term>Viscoelastic solutions</term></keywords><keywords scheme="Teeft" xml:lang="en"><term>Aiche</term><term>Aiche july</term><term>Carbopol</term><term>Caterpillar</term><term>Caterpillar micromixer</term><term>Characteristic elongational time</term><term>Chem</term><term>Color figure</term><term>Continuous phase</term><term>Cpmm</term><term>Deborah number</term><term>Different paam solutions</term><term>Effective shear rate</term><term>Elongational</term><term>Emkarox</term><term>Excess pressure drop</term><term>Friction factor</term><term>Friction factor scales</term><term>Generalized reynolds number</term><term>Hessel</term><term>Impeller</term><term>July</term><term>Laminar</term><term>Laminar regime</term><term>Micromixer</term><term>Micromixers</term><term>Microreactors</term><term>Mixer</term><term>Newtonian</term><term>Online</term><term>Online issue</term><term>Paam</term><term>Paam solutions</term><term>Porous media</term><term>Pressure drop</term><term>Pressure loss</term><term>Repl</term><term>Reynolds number</term><term>Reynolds numbers</term><term>Shear rate</term><term>Static mixer</term><term>Static mixers</term><term>Uids</term><term>Viscoelastic</term><term>Viscoelastic solutions</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract">Microreactors are very promising tools for the design of future chemical processes. For example, emulsions of very narrow size distribution are obtained at much lower energy consumption than the one spent with usual processes. Micromixers play thereby an eminent role. The goal of this study is to better understand the hydrodynamic properties of a split‐and‐recombine Caterpillar micromixer (CPMM) specially with regard to handling viscoelastic fluids, a topic hardly addressed so far in the context of micromixers in general, although industrial fluids like detergent, cosmetic, or food emulsions are non‐Newtonian. Friction factor was measured in a CPMM for both Newtonian and non‐Newtonian fluids. For Newtonian fluids, the friction factor in the laminar regime is f/2 = 24/Re. The laminar regime exists up to Reynolds numbers of 15. For shear‐thinning fluids like Carbopol 940 or viscoelastic fluids like Poly Acryl Amide (PAAm) aqueous solutions, the friction factor scales identically within statistical errors up to a generalized Reynolds number of 10 and 0.01, respectively. Above that limit, there is an excess pressure drop for the viscoelastic PAAm solution. This excess pressure drop multiplies the friction factor by more than a decade over a decade of Reynolds numbers. The origin of this excess pressure drop is the high elongational flow present in the Caterpillar static mixer applied to a highly viscoelastic fluid. This result can be extended to almost all static mixers, because their flows are generally highly elongational. © 2013 American Institute of Chemical Engineers AIChE J, 59: 2679–2685, 2013</div></front></TEI><istex><corpusName>wiley</corpusName><keywords><teeft><json:string>uids</json:string><json:string>pressure drop</json:string><json:string>paam</json:string><json:string>chem</json:string><json:string>friction factor</json:string><json:string>excess pressure drop</json:string><json:string>caterpillar</json:string><json:string>carbopol</json:string><json:string>elongational</json:string><json:string>static mixer</json:string><json:string>laminar</json:string><json:string>micromixers</json:string><json:string>static mixers</json:string><json:string>micromixer</json:string><json:string>repl</json:string><json:string>aiche</json:string><json:string>emkarox</json:string><json:string>mixer</json:string><json:string>reynolds numbers</json:string><json:string>microreactors</json:string><json:string>online</json:string><json:string>cpmm</json:string><json:string>hessel</json:string><json:string>impeller</json:string><json:string>laminar regime</json:string><json:string>july</json:string><json:string>color figure</json:string><json:string>online issue</json:string><json:string>reynolds number</json:string><json:string>newtonian</json:string><json:string>effective shear rate</json:string><json:string>shear rate</json:string><json:string>paam solutions</json:string><json:string>friction factor scales</json:string><json:string>porous media</json:string><json:string>viscoelastic</json:string><json:string>characteristic elongational time</json:string><json:string>generalized reynolds number</json:string><json:string>continuous phase</json:string><json:string>viscoelastic solutions</json:string><json:string>different paam solutions</json:string><json:string>caterpillar micromixer</json:string><json:string>deborah number</json:string><json:string>pressure loss</json:string><json:string>aiche july</json:string></teeft></keywords><author><json:item><name>Odile Carrier</name><affiliations><json:string>Laboratoire Réactions et Génie des Procédés (LRGP), Université de Lorraine, CNRS, Nancy F‐54001, France</json:string></affiliations></json:item><json:item><name>Denis Funfschilling</name><affiliations><json:string>Laboratoire Réactions et Génie des Procédés (LRGP), Université de Lorraine, CNRS, Nancy F‐54001, France</json:string><json:string>E-mail: denis.funfschilling@univ-lorraine.fr</json:string></affiliations></json:item><json:item><name>Hélène Debas</name><affiliations><json:string>Laboratoire Réactions et Génie des Procédés (LRGP), Université de Lorraine, CNRS, Nancy F‐54001, France</json:string></affiliations></json:item><json:item><name>Souhila Poncin</name><affiliations><json:string>Laboratoire Réactions et Génie des Procédés (LRGP), Université de Lorraine, CNRS, Nancy F‐54001, France</json:string></affiliations></json:item><json:item><name>Patrick Löb</name><affiliations><json:string>Institut für Mikrotechnik Mainz GmbH, Mainz D‐55129, Germany</json:string></affiliations></json:item><json:item><name>Huai‐Zhi Li</name><affiliations><json:string>Laboratoire Réactions et Génie des Procédés (LRGP), Université de Lorraine, CNRS, Nancy F‐54001, France</json:string></affiliations></json:item></author><subject><json:item><lang><json:string>eng</json:string></lang><value>non‐Newtonian fluid</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>viscoelasticity</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>elongational flow</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>micromixer</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>caterpillar</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>pressure drop</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>excess pressure drop</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>friction factor</value></json:item></subject><articleId><json:string>AIC14035</json:string></articleId><language><json:string>eng</json:string></language><originalGenre><json:string>article</json:string></originalGenre><abstract>Microreactors are very promising tools for the design of future chemical processes. For example, emulsions of very narrow size distribution are obtained at much lower energy consumption than the one spent with usual processes. Micromixers play thereby an eminent role. The goal of this study is to better understand the hydrodynamic properties of a split‐and‐recombine Caterpillar micromixer (CPMM) specially with regard to handling viscoelastic fluids, a topic hardly addressed so far in the context of micromixers in general, although industrial fluids like detergent, cosmetic, or food emulsions are non‐Newtonian. Friction factor was measured in a CPMM for both Newtonian and non‐Newtonian fluids. For Newtonian fluids, the friction factor in the laminar regime is f/2 = 24/Re. The laminar regime exists up to Reynolds numbers of 15. For shear‐thinning fluids like Carbopol 940 or viscoelastic fluids like Poly Acryl Amide (PAAm) aqueous solutions, the friction factor scales identically within statistical errors up to a generalized Reynolds number of 10 and 0.01, respectively. Above that limit, there is an excess pressure drop for the viscoelastic PAAm solution. This excess pressure drop multiplies the friction factor by more than a decade over a decade of Reynolds numbers. The origin of this excess pressure drop is the high elongational flow present in the Caterpillar static mixer applied to a highly viscoelastic fluid. This result can be extended to almost all static mixers, because their flows are generally highly elongational. © 2013 American Institute of Chemical Engineers AIChE J, 59: 2679–2685, 2013</abstract><qualityIndicators><score>8.011</score><pdfVersion>1.4</pdfVersion><pdfPageSize>612 x 809.972 pts</pdfPageSize><refBibsNative>true</refBibsNative><abstractCharCount>1623</abstractCharCount><pdfWordCount>4571</pdfWordCount><pdfCharCount>27372</pdfCharCount><pdfPageCount>7</pdfPageCount><abstractWordCount>245</abstractWordCount></qualityIndicators><title>Pressure drop in a split‐and‐recombine caterpillar micromixer in case of newtonian and non‐newtonian fluids</title><genre><json:string>article</json:string></genre><host><title>AIChE Journal</title><language><json:string>unknown</json:string></language><doi><json:string>10.1002/(ISSN)1547-5905</json:string></doi><issn><json:string>0001-1541</json:string></issn><eissn><json:string>1547-5905</json:string></eissn><publisherId><json:string>AIC</json:string></publisherId><volume>59</volume><issue>7</issue><pages><first>2679</first><last>2685</last><total>7</total></pages><genre><json:string>journal</json:string></genre><subject><json:item><value>Transport Phenomena and Fluid Mechanics</value></json:item></subject></host><categories><wos><json:string>science</json:string><json:string>engineering, chemical</json:string></wos><scienceMetrix><json:string>applied sciences</json:string><json:string>engineering</json:string><json:string>chemical engineering</json:string></scienceMetrix></categories><publicationDate>2013</publicationDate><copyrightDate>2013</copyrightDate><doi><json:string>10.1002/aic.14035</json:string></doi><id>AE13B0FA8604A28BA657C726DD3836D9B3E2E868</id><score>1</score><fulltext><json:item><extension>pdf</extension><original>true</original><mimetype>application/pdf</mimetype><uri>https://api.istex.fr/document/AE13B0FA8604A28BA657C726DD3836D9B3E2E868/fulltext/pdf</uri></json:item><json:item><extension>zip</extension><original>false</original><mimetype>application/zip</mimetype><uri>https://api.istex.fr/document/AE13B0FA8604A28BA657C726DD3836D9B3E2E868/fulltext/zip</uri></json:item><istex:fulltextTEI uri="https://api.istex.fr/document/AE13B0FA8604A28BA657C726DD3836D9B3E2E868/fulltext/tei"><teiHeader><fileDesc><titleStmt><title level="a" type="main">Pressure drop in a split‐and‐recombine caterpillar micromixer in case of newtonian and non‐newtonian fluids</title></titleStmt><publicationStmt><authority>ISTEX</authority><publisher>Wiley Publishing Ltd</publisher><availability><licence>Copyright © 2013 American Institute of Chemical Engineers</licence></availability><date type="published" when="2013-07"></date></publicationStmt><notesStmt><note type="content-type" subtype="article" source="article" scheme="https://content-type.data.istex.fr/ark:/67375/XTP-6N5SZHKN-D">article</note><note type="publication-type" subtype="journal" scheme="https://publication-type.data.istex.fr/ark:/67375/JMC-0GLKJH51-B">journal</note></notesStmt><sourceDesc><biblStruct type="article"><analytic><title level="a" type="main">Pressure drop in a split‐and‐recombine caterpillar micromixer in case of newtonian and non‐newtonian fluids</title><author xml:id="author-0000"><persName><forename type="first">Odile</forename><surname>Carrier</surname></persName><affiliation><orgName>Laboratoire Réactions et Génie des Procédés (LRGP)</orgName><orgName>Université de Lorraine</orgName><address><street>CNRS, Nancy F‐54001</street><country key="FR">France</country></address></affiliation></author><author xml:id="author-0001" role="corresp"><persName><forename type="first">Denis</forename><surname>Funfschilling</surname></persName><affiliation><orgName>Laboratoire Réactions et Génie des Procédés (LRGP)</orgName><orgName>Université de Lorraine</orgName><address><street>CNRS, Nancy F‐54001</street><country key="FR">France</country></address></affiliation><affiliation>Correspondence concerning this article should be addressed to D. Funfschilling at denis.funfschilling@univ-lorraine.fr.</affiliation></author><author xml:id="author-0002"><persName><forename type="first">Hélène</forename><surname>Debas</surname></persName><affiliation><orgName>Laboratoire Réactions et Génie des Procédés (LRGP)</orgName><orgName>Université de Lorraine</orgName><address><street>CNRS, Nancy F‐54001</street><country key="FR">France</country></address></affiliation></author><author xml:id="author-0003"><persName><forename type="first">Souhila</forename><surname>Poncin</surname></persName><affiliation><orgName>Laboratoire Réactions et Génie des Procédés (LRGP)</orgName><orgName>Université de Lorraine</orgName><address><street>CNRS, Nancy F‐54001</street><country key="FR">France</country></address></affiliation></author><author xml:id="author-0004"><persName><forename type="first">Patrick</forename><surname>Löb</surname></persName><affiliation><orgName>Institut für Mikrotechnik Mainz GmbH</orgName><address><street>Mainz D‐55129</street><country key="DE">Germany</country></address></affiliation></author><author xml:id="author-0005"><persName><forename type="first">Huai‐Zhi</forename><surname>Li</surname></persName><affiliation><orgName>Laboratoire Réactions et Génie des Procédés (LRGP)</orgName><orgName>Université de Lorraine</orgName><address><street>CNRS, Nancy F‐54001</street><country key="FR">France</country></address></affiliation></author><idno type="istex">AE13B0FA8604A28BA657C726DD3836D9B3E2E868</idno><idno type="ark">ark:/67375/WNG-QH4J3XS0-C</idno><idno type="DOI">10.1002/aic.14035</idno><idno type="unit">AIC14035</idno><idno type="toTypesetVersion">file:AIC.AIC14035.pdf</idno></analytic><monogr><title level="j" type="main">AIChE Journal</title><title level="j" type="alt">AICHE JOURNAL</title><idno type="pISSN">0001-1541</idno><idno type="eISSN">1547-5905</idno><idno type="book-DOI">10.1002/(ISSN)1547-5905</idno><idno type="book-part-DOI">10.1002/aic.v59.7</idno><idno type="product">AIC</idno><imprint><biblScope unit="vol">59</biblScope><biblScope unit="issue">7</biblScope><biblScope unit="page" from="2679">2679</biblScope><biblScope unit="page" to="2685">2685</biblScope><biblScope unit="page-count">7</biblScope><date type="published" when="2013-07"></date></imprint></monogr></biblStruct></sourceDesc></fileDesc><profileDesc><abstract style="main"><p>Microreactors are very promising tools for the design of future chemical processes. For example, emulsions of very narrow size distribution are obtained at much lower energy consumption than the one spent with usual processes. Micromixers play thereby an eminent role. The goal of this study is to better understand the hydrodynamic properties of a split‐and‐recombine Caterpillar micromixer (CPMM) specially with regard to handling viscoelastic fluids, a topic hardly addressed so far in the context of micromixers in general, although industrial fluids like detergent, cosmetic, or food emulsions are non‐Newtonian. Friction factor was measured in a CPMM for both Newtonian and non‐Newtonian fluids. For Newtonian fluids, the friction factor in the laminar regime is f/2 = 24/Re. The laminar regime exists up to Reynolds numbers of 15. For shear‐thinning fluids like Carbopol 940 or viscoelastic fluids like Poly Acryl Amide (PAAm) aqueous solutions, the friction factor scales identically within statistical errors up to a generalized Reynolds number of 10 and 0.01, respectively. Above that limit, there is an excess pressure drop for the viscoelastic PAAm solution. This excess pressure drop multiplies the friction factor by more than a decade over a decade of Reynolds numbers. The origin of this excess pressure drop is the high elongational flow present in the Caterpillar static mixer applied to a highly viscoelastic fluid. This result can be extended to almost all static mixers, because their flows are generally highly elongational. © 2013 American Institute of Chemical Engineers <hi rend="italic">AIChE J</hi>, 59: 2679–2685, 2013</p></abstract><textClass><keywords><term xml:id="aic14035-kwd-0001">non‐Newtonian fluid</term><term xml:id="aic14035-kwd-0002">viscoelasticity</term><term xml:id="aic14035-kwd-0003">elongational flow</term><term xml:id="aic14035-kwd-0004">micromixer</term><term xml:id="aic14035-kwd-0005">caterpillar</term><term xml:id="aic14035-kwd-0006">pressure drop</term><term xml:id="aic14035-kwd-0007">excess pressure drop</term><term xml:id="aic14035-kwd-0008">friction factor</term></keywords><keywords rend="articleCategory"><term>Transport Phenomena and Fluid Mechanics</term></keywords><keywords rend="tocHeading1"><term>Transport Phenomena and Fluid Mechanics</term></keywords></textClass><langUsage><language ident="en"></language></langUsage></profileDesc></teiHeader></istex:fulltextTEI><json:item><extension>txt</extension><original>false</original><mimetype>text/plain</mimetype><uri>https://api.istex.fr/document/AE13B0FA8604A28BA657C726DD3836D9B3E2E868/fulltext/txt</uri></json:item></fulltext><metadata><istex:metadataXml wicri:clean="Wiley, elements deleted: body"><istex:xmlDeclaration>version="1.0" encoding="UTF-8" standalone="yes"</istex:xmlDeclaration><istex:document><component version="2.0" type="serialArticle" xml:lang="en" xml:id="aic14035"><header><publicationMeta level="product"><doi origin="wiley" registered="yes">10.1002/(ISSN)1547-5905</doi><issn type="print">0001-1541</issn><issn type="electronic">1547-5905</issn><idGroup><id type="product" value="AIC"></id></idGroup><titleGroup><title type="main" sort="AICHE JOURNAL">AIChE Journal</title><title type="short">AIChE J.</title></titleGroup></publicationMeta><publicationMeta level="part" position="70"><doi>10.1002/aic.v59.7</doi><copyright ownership="thirdParty">Copyright © 2013 American Institute of Chemical Engineers</copyright><numberingGroup><numbering type="journalVolume" number="59">59</numbering><numbering type="journalIssue">7</numbering></numberingGroup><coverDate startDate="2013-07">July 2013</coverDate></publicationMeta><publicationMeta level="unit" position="330" type="article" status="forIssue"><doi>10.1002/aic.14035</doi><idGroup><id type="unit" value="AIC14035"></id></idGroup><countGroup><count type="pageTotal" number="7"></count></countGroup><titleGroup><title type="articleCategory">Transport Phenomena and Fluid Mechanics</title><title type="tocHeading1">Transport Phenomena and Fluid Mechanics</title></titleGroup><copyright ownership="thirdParty">Copyright © 2013 American Institute of Chemical Engineers</copyright><eventGroup><event type="manuscriptReceived" date="2012-02-16"></event><event type="manuscriptRevised" date="2012-11-27"></event><event type="xmlCreated" agent="Cenveo Publisher Services" date="2013-01-28"></event><event type="publishedOnlineAccepted" date="2013-01-24"></event><event type="publishedOnlineEarlyUnpaginated" date="2013-02-22"></event><event type="firstOnline" date="2013-02-22"></event><event type="publishedOnlineFinalForm" date="2013-06-17"></event><event type="xmlConverted" agent="Converter:WILEY_ML3G_TO_WILEY_ML3GV2 version:3.8.8" date="2014-01-01"></event><event type="xmlConverted" agent="Converter:WML3G_To_WML3G version:4.6.4 mode:FullText" date="2015-10-02"></event></eventGroup><numberingGroup><numbering type="pageFirst">2679</numbering><numbering type="pageLast">2685</numbering></numberingGroup><correspondenceTo>Correspondence concerning this article should be addressed to D. Funfschilling at <email>denis.funfschilling@univ-lorraine.fr</email>.</correspondenceTo><linkGroup><link type="toTypesetVersion" href="file:AIC.AIC14035.pdf"></link></linkGroup></publicationMeta><contentMeta><titleGroup><title type="main">Pressure drop in a split‐and‐recombine caterpillar micromixer in case of newtonian and non‐newtonian fluids</title></titleGroup><creators><creator affiliationRef="#aic14035-aff-0001" creatorRole="author" xml:id="aic14035-cr-0001"><personName><givenNames>Odile</givenNames><familyName>Carrier</familyName></personName></creator><creator affiliationRef="#aic14035-aff-0001" corresponding="yes" creatorRole="author" xml:id="aic14035-cr-0002"><personName><givenNames>Denis</givenNames><familyName>Funfschilling</familyName></personName></creator><creator affiliationRef="#aic14035-aff-0001" creatorRole="author" xml:id="aic14035-cr-0003"><personName><givenNames>Hélène</givenNames><familyName>Debas</familyName></personName></creator><creator affiliationRef="#aic14035-aff-0001" creatorRole="author" xml:id="aic14035-cr-0004"><personName><givenNames>Souhila</givenNames><familyName>Poncin</familyName></personName></creator><creator affiliationRef="#aic14035-aff-0002" creatorRole="author" xml:id="aic14035-cr-0005"><personName><givenNames>Patrick</givenNames><familyName>Löb</familyName></personName></creator><creator affiliationRef="#aic14035-aff-0001" creatorRole="author" xml:id="aic14035-cr-0006"><personName><givenNames>Huai‐Zhi</givenNames><familyName>Li</familyName></personName></creator></creators><affiliationGroup><affiliation countryCode="FR" type="organization" xml:id="aic14035-aff-0001"><orgDiv>Laboratoire Réactions et Génie des Procédés (LRGP)</orgDiv><orgName>Université de Lorraine</orgName><address><street>CNRS, Nancy F‐54001</street><country>France</country></address></affiliation><affiliation countryCode="DE" type="organization" xml:id="aic14035-aff-0002"><orgName>Institut für Mikrotechnik Mainz GmbH</orgName><address><street>Mainz D‐55129</street><country>Germany</country></address></affiliation></affiliationGroup><keywordGroup type="author"><keyword xml:id="aic14035-kwd-0001">non‐Newtonian fluid</keyword><keyword xml:id="aic14035-kwd-0002">viscoelasticity</keyword><keyword xml:id="aic14035-kwd-0003">elongational flow</keyword><keyword xml:id="aic14035-kwd-0004">micromixer</keyword><keyword xml:id="aic14035-kwd-0005">caterpillar</keyword><keyword xml:id="aic14035-kwd-0006">pressure drop</keyword><keyword xml:id="aic14035-kwd-0007">excess pressure drop</keyword><keyword xml:id="aic14035-kwd-0008">friction factor</keyword></keywordGroup><fundingInfo><fundingAgency>6th Framework Program of the European Commission</fundingAgency><fundingNumber>NMP2‐CT‐2005‐011816</fundingNumber></fundingInfo><abstractGroup><abstract type="main"><p>Microreactors are very promising tools for the design of future chemical processes. For example, emulsions of very narrow size distribution are obtained at much lower energy consumption than the one spent with usual processes. Micromixers play thereby an eminent role. The goal of this study is to better understand the hydrodynamic properties of a split‐and‐recombine Caterpillar micromixer (CPMM) specially with regard to handling viscoelastic fluids, a topic hardly addressed so far in the context of micromixers in general, although industrial fluids like detergent, cosmetic, or food emulsions are non‐Newtonian. Friction factor was measured in a CPMM for both Newtonian and non‐Newtonian fluids. For Newtonian fluids, the friction factor in the laminar regime is f/2 = 24/Re. The laminar regime exists up to Reynolds numbers of 15. For shear‐thinning fluids like Carbopol 940 or viscoelastic fluids like Poly Acryl Amide (PAAm) aqueous solutions, the friction factor scales identically within statistical errors up to a generalized Reynolds number of 10 and 0.01, respectively. Above that limit, there is an excess pressure drop for the viscoelastic PAAm solution. This excess pressure drop multiplies the friction factor by more than a decade over a decade of Reynolds numbers. The origin of this excess pressure drop is the high elongational flow present in the Caterpillar static mixer applied to a highly viscoelastic fluid. This result can be extended to almost all static mixers, because their flows are generally highly elongational. © 2013 American Institute of Chemical Engineers <i>AIChE J</i>, 59: 2679–2685, 2013</p></abstract></abstractGroup></contentMeta></header></component></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>Pressure drop in a split‐and‐recombine caterpillar micromixer in case of newtonian and non‐newtonian fluids</title></titleInfo><titleInfo type="alternative" contentType="CDATA" lang="en"><title>Pressure drop in a split‐and‐recombine caterpillar micromixer in case of newtonian and non‐newtonian fluids</title></titleInfo><name type="personal"><namePart type="given">Odile</namePart><namePart type="family">Carrier</namePart><affiliation>Laboratoire Réactions et Génie des Procédés (LRGP), Université de Lorraine, CNRS, Nancy F‐54001, France</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Denis</namePart><namePart type="family">Funfschilling</namePart><affiliation>Laboratoire Réactions et Génie des Procédés (LRGP), Université de Lorraine, CNRS, Nancy F‐54001, France</affiliation><affiliation>E-mail: denis.funfschilling@univ-lorraine.fr</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Hélène</namePart><namePart type="family">Debas</namePart><affiliation>Laboratoire Réactions et Génie des Procédés (LRGP), Université de Lorraine, CNRS, Nancy F‐54001, France</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Souhila</namePart><namePart type="family">Poncin</namePart><affiliation>Laboratoire Réactions et Génie des Procédés (LRGP), Université de Lorraine, CNRS, Nancy F‐54001, France</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Patrick</namePart><namePart type="family">Löb</namePart><affiliation>Institut für Mikrotechnik Mainz GmbH, Mainz D‐55129, Germany</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Huai‐Zhi</namePart><namePart type="family">Li</namePart><affiliation>Laboratoire Réactions et Génie des Procédés (LRGP), Université de Lorraine, CNRS, Nancy F‐54001, France</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="article" displayLabel="article" authority="ISTEX" authorityURI="https://content-type.data.istex.fr" valueURI="https://content-type.data.istex.fr/ark:/67375/XTP-6N5SZHKN-D">article</genre><originInfo><publisher>Blackwell Publishing Ltd</publisher><dateIssued encoding="w3cdtf">2013-07</dateIssued><dateCreated encoding="w3cdtf">2013-01-28</dateCreated><dateCaptured encoding="w3cdtf">2012-02-16</dateCaptured><copyrightDate encoding="w3cdtf">2013</copyrightDate></originInfo><language><languageTerm type="code" authority="rfc3066">en</languageTerm><languageTerm type="code" authority="iso639-2b">eng</languageTerm></language><abstract>Microreactors are very promising tools for the design of future chemical processes. For example, emulsions of very narrow size distribution are obtained at much lower energy consumption than the one spent with usual processes. Micromixers play thereby an eminent role. The goal of this study is to better understand the hydrodynamic properties of a split‐and‐recombine Caterpillar micromixer (CPMM) specially with regard to handling viscoelastic fluids, a topic hardly addressed so far in the context of micromixers in general, although industrial fluids like detergent, cosmetic, or food emulsions are non‐Newtonian. Friction factor was measured in a CPMM for both Newtonian and non‐Newtonian fluids. For Newtonian fluids, the friction factor in the laminar regime is f/2 = 24/Re. The laminar regime exists up to Reynolds numbers of 15. For shear‐thinning fluids like Carbopol 940 or viscoelastic fluids like Poly Acryl Amide (PAAm) aqueous solutions, the friction factor scales identically within statistical errors up to a generalized Reynolds number of 10 and 0.01, respectively. Above that limit, there is an excess pressure drop for the viscoelastic PAAm solution. This excess pressure drop multiplies the friction factor by more than a decade over a decade of Reynolds numbers. The origin of this excess pressure drop is the high elongational flow present in the Caterpillar static mixer applied to a highly viscoelastic fluid. This result can be extended to almost all static mixers, because their flows are generally highly elongational. © 2013 American Institute of Chemical Engineers AIChE J, 59: 2679–2685, 2013</abstract><note type="funding">6th Framework Program of the European Commission - No. NMP2‐CT‐2005‐011816; </note><subject><genre>keywords</genre><topic>non‐Newtonian fluid</topic><topic>viscoelasticity</topic><topic>elongational flow</topic><topic>micromixer</topic><topic>caterpillar</topic><topic>pressure drop</topic><topic>excess pressure drop</topic><topic>friction factor</topic></subject><relatedItem type="host"><titleInfo><title>AIChE Journal</title></titleInfo><titleInfo type="abbreviated"><title>AIChE J.</title></titleInfo><genre type="journal" authority="ISTEX" authorityURI="https://publication-type.data.istex.fr" valueURI="https://publication-type.data.istex.fr/ark:/67375/JMC-0GLKJH51-B">journal</genre><subject><genre>article-category</genre><topic>Transport Phenomena and Fluid Mechanics</topic></subject><identifier type="ISSN">0001-1541</identifier><identifier type="eISSN">1547-5905</identifier><identifier type="DOI">10.1002/(ISSN)1547-5905</identifier><identifier type="PublisherID">AIC</identifier><part><date>2013</date><detail type="volume"><caption>vol.</caption><number>59</number></detail><detail type="issue"><caption>no.</caption><number>7</number></detail><extent unit="pages"><start>2679</start><end>2685</end><total>7</total></extent></part></relatedItem><identifier type="istex">AE13B0FA8604A28BA657C726DD3836D9B3E2E868</identifier><identifier type="ark">ark:/67375/WNG-QH4J3XS0-C</identifier><identifier type="DOI">10.1002/aic.14035</identifier><identifier type="ArticleID">AIC14035</identifier><accessCondition type="use and reproduction" contentType="copyright">Copyright © 2013 American Institute of Chemical EngineersCopyright © 2013 American Institute of Chemical Engineers</accessCondition><recordInfo><recordContentSource authority="ISTEX" authorityURI="https://loaded-corpus.data.istex.fr" valueURI="https://loaded-corpus.data.istex.fr/ark:/67375/XBH-L0C46X92-X">wiley</recordContentSource></recordInfo></mods><json:item><extension>json</extension><original>false</original><mimetype>application/json</mimetype><uri>https://api.istex.fr/document/AE13B0FA8604A28BA657C726DD3836D9B3E2E868/metadata/json</uri></json:item></metadata><serie></serie></istex></record>Pour manipuler ce document sous Unix (Dilib)
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