Development of coherent structures in concentrated suspensions of swimming model micro-organisms
A swimming micro-organism is modelled as a squirming sphere with prescribed tangential surface velocity and referred to as a squirmer. The centre of mass of the sphere may be displaced from the geometric centre, and the effects of inertia and Brownian motion are neglected. The well-known Stokesian d...
Gespeichert in:
| Veröffentlicht in: | Journal of fluid mechanics 2008-11, Vol.615, p.401-431 |
|---|---|
| Hauptverfasser: | , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | 431 |
|---|---|
| container_issue | |
| container_start_page | 401 |
| container_title | Journal of fluid mechanics |
| container_volume | 615 |
| creator | ISHIKAWA, TAKUJI LOCSEI, J. T. PEDLEY, T. J. |
| description | A swimming micro-organism is modelled as a squirming sphere with prescribed tangential surface velocity and referred to as a squirmer. The centre of mass of the sphere may be displaced from the geometric centre, and the effects of inertia and Brownian motion are neglected. The well-known Stokesian dynamics method is modified in order to simulate squirmer motions in a concentrated suspension. The movement of 216 identical squirmers in a concentrated suspension without any imposed flow is simulated in a cubic domain with periodic boundary conditions, and the coherent structures within the suspension are investigated. The results show that (a) a weak aggregation of cells appears as a result of the hydrodynamic interaction between cells; (b) the cells generate collective motions by the hydrodynamic interaction between themselves; and (c) the range and duration of the collective motions depend on the volume fraction and the squirmers' stresslet strengths. These tendencies show good qualitative agreement with previous experiments. |
| doi_str_mv | 10.1017/S0022112008003807 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_35763591</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><cupid>10_1017_S0022112008003807</cupid><sourcerecordid>35763591</sourcerecordid><originalsourceid>FETCH-LOGICAL-c529t-b5517bded389302ee0110ce4e5f74492ba58bc385acb2be079654a6b6ff3308c3</originalsourceid><addsrcrecordid>eNp1kEFv1DAQhSNEJZbCD-AWIcEtMLbjOD6iLS1IRagCJNSLcZzJ4pLYiycp8O9xtKsigTjNaN73xs9TFE8YvGDA1MsPAJwzxgFaANGCuldsWN3oSjW1vF9sVrla9QfFQ6IbACZAq03x5QxvcYz7CcNcxqF08Sumtac5LW5eElLpQx4Hl6fJztiXtNAeA_kYaLXQDz9NPuzKKfY4lpN3KVYx7WzwNNGj4mSwI-HjYz0tPp2__rh9U12-v3i7fXVZOcn1XHVSMtX12ItWC-CIwBg4rFEOqq4176xsOydaaV3HOwSlG1nbpmuGQQhonTgtnh_27lP8viDNZvLkcBxtwLiQEVI1QmqWwad_gTdxSSFnM5xBfl1znSF2gPJfiBIOZp_8ZNMvw8CsBzf_HDx7nh0XW3J2HJINztOdkUNbcxAyc9WB8zTjzzvdpm-mUUJJ01xcmbMt-3xdb9-Z68yLYxY7dcn3O_yT-P9pfgN4WJ9t</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>210893929</pqid></control><display><type>article</type><title>Development of coherent structures in concentrated suspensions of swimming model micro-organisms</title><source>Cambridge University Press Journals Complete</source><creator>ISHIKAWA, TAKUJI ; LOCSEI, J. T. ; PEDLEY, T. J.</creator><creatorcontrib>ISHIKAWA, TAKUJI ; LOCSEI, J. T. ; PEDLEY, T. J.</creatorcontrib><description>A swimming micro-organism is modelled as a squirming sphere with prescribed tangential surface velocity and referred to as a squirmer. The centre of mass of the sphere may be displaced from the geometric centre, and the effects of inertia and Brownian motion are neglected. The well-known Stokesian dynamics method is modified in order to simulate squirmer motions in a concentrated suspension. The movement of 216 identical squirmers in a concentrated suspension without any imposed flow is simulated in a cubic domain with periodic boundary conditions, and the coherent structures within the suspension are investigated. The results show that (a) a weak aggregation of cells appears as a result of the hydrodynamic interaction between cells; (b) the cells generate collective motions by the hydrodynamic interaction between themselves; and (c) the range and duration of the collective motions depend on the volume fraction and the squirmers' stresslet strengths. These tendencies show good qualitative agreement with previous experiments.</description><identifier>ISSN: 0022-1120</identifier><identifier>EISSN: 1469-7645</identifier><identifier>DOI: 10.1017/S0022112008003807</identifier><identifier>CODEN: JFLSA7</identifier><language>eng</language><publisher>Cambridge, UK: Cambridge University Press</publisher><subject>Biological and medical sciences ; Boundary conditions ; Cell physiology ; Fluid dynamics ; Fluid mechanics ; Fundamental and applied biological sciences. Psychology ; Microorganisms ; Molecular and cellular biology ; Motility and taxis ; Surface velocity ; Swimming</subject><ispartof>Journal of fluid mechanics, 2008-11, Vol.615, p.401-431</ispartof><rights>Copyright © Cambridge University Press 2008</rights><rights>2008 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c529t-b5517bded389302ee0110ce4e5f74492ba58bc385acb2be079654a6b6ff3308c3</citedby><cites>FETCH-LOGICAL-c529t-b5517bded389302ee0110ce4e5f74492ba58bc385acb2be079654a6b6ff3308c3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.cambridge.org/core/product/identifier/S0022112008003807/type/journal_article$$EHTML$$P50$$Gcambridge$$H</linktohtml><link.rule.ids>164,314,776,780,27903,27904,55607</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=20842035$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>ISHIKAWA, TAKUJI</creatorcontrib><creatorcontrib>LOCSEI, J. T.</creatorcontrib><creatorcontrib>PEDLEY, T. J.</creatorcontrib><title>Development of coherent structures in concentrated suspensions of swimming model micro-organisms</title><title>Journal of fluid mechanics</title><addtitle>J. Fluid Mech</addtitle><description>A swimming micro-organism is modelled as a squirming sphere with prescribed tangential surface velocity and referred to as a squirmer. The centre of mass of the sphere may be displaced from the geometric centre, and the effects of inertia and Brownian motion are neglected. The well-known Stokesian dynamics method is modified in order to simulate squirmer motions in a concentrated suspension. The movement of 216 identical squirmers in a concentrated suspension without any imposed flow is simulated in a cubic domain with periodic boundary conditions, and the coherent structures within the suspension are investigated. The results show that (a) a weak aggregation of cells appears as a result of the hydrodynamic interaction between cells; (b) the cells generate collective motions by the hydrodynamic interaction between themselves; and (c) the range and duration of the collective motions depend on the volume fraction and the squirmers' stresslet strengths. These tendencies show good qualitative agreement with previous experiments.</description><subject>Biological and medical sciences</subject><subject>Boundary conditions</subject><subject>Cell physiology</subject><subject>Fluid dynamics</subject><subject>Fluid mechanics</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Microorganisms</subject><subject>Molecular and cellular biology</subject><subject>Motility and taxis</subject><subject>Surface velocity</subject><subject>Swimming</subject><issn>0022-1120</issn><issn>1469-7645</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2008</creationdate><recordtype>article</recordtype><sourceid>8G5</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><sourceid>GUQSH</sourceid><sourceid>M2O</sourceid><recordid>eNp1kEFv1DAQhSNEJZbCD-AWIcEtMLbjOD6iLS1IRagCJNSLcZzJ4pLYiycp8O9xtKsigTjNaN73xs9TFE8YvGDA1MsPAJwzxgFaANGCuldsWN3oSjW1vF9sVrla9QfFQ6IbACZAq03x5QxvcYz7CcNcxqF08Sumtac5LW5eElLpQx4Hl6fJztiXtNAeA_kYaLXQDz9NPuzKKfY4lpN3KVYx7WzwNNGj4mSwI-HjYz0tPp2__rh9U12-v3i7fXVZOcn1XHVSMtX12ItWC-CIwBg4rFEOqq4176xsOydaaV3HOwSlG1nbpmuGQQhonTgtnh_27lP8viDNZvLkcBxtwLiQEVI1QmqWwad_gTdxSSFnM5xBfl1znSF2gPJfiBIOZp_8ZNMvw8CsBzf_HDx7nh0XW3J2HJINztOdkUNbcxAyc9WB8zTjzzvdpm-mUUJJ01xcmbMt-3xdb9-Z68yLYxY7dcn3O_yT-P9pfgN4WJ9t</recordid><startdate>20081125</startdate><enddate>20081125</enddate><creator>ISHIKAWA, TAKUJI</creator><creator>LOCSEI, J. T.</creator><creator>PEDLEY, T. J.</creator><general>Cambridge University Press</general><scope>BSCLL</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7TB</scope><scope>7U5</scope><scope>7UA</scope><scope>7XB</scope><scope>88I</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>8FK</scope><scope>8G5</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AEUYN</scope><scope>AFKRA</scope><scope>ARAPS</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>BHPHI</scope><scope>BKSAR</scope><scope>C1K</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>F1W</scope><scope>FR3</scope><scope>GNUQQ</scope><scope>GUQSH</scope><scope>H8D</scope><scope>H96</scope><scope>HCIFZ</scope><scope>KR7</scope><scope>L.G</scope><scope>L6V</scope><scope>L7M</scope><scope>M2O</scope><scope>M2P</scope><scope>M7S</scope><scope>MBDVC</scope><scope>P5Z</scope><scope>P62</scope><scope>PCBAR</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PTHSS</scope><scope>Q9U</scope><scope>S0W</scope></search><sort><creationdate>20081125</creationdate><title>Development of coherent structures in concentrated suspensions of swimming model micro-organisms</title><author>ISHIKAWA, TAKUJI ; LOCSEI, J. T. ; PEDLEY, T. J.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c529t-b5517bded389302ee0110ce4e5f74492ba58bc385acb2be079654a6b6ff3308c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2008</creationdate><topic>Biological and medical sciences</topic><topic>Boundary conditions</topic><topic>Cell physiology</topic><topic>Fluid dynamics</topic><topic>Fluid mechanics</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Microorganisms</topic><topic>Molecular and cellular biology</topic><topic>Motility and taxis</topic><topic>Surface velocity</topic><topic>Swimming</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>ISHIKAWA, TAKUJI</creatorcontrib><creatorcontrib>LOCSEI, J. T.</creatorcontrib><creatorcontrib>PEDLEY, T. J.</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Water Resources Abstracts</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Science Database (Alumni Edition)</collection><collection>Technology Research Database</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>Research Library (Alumni Edition)</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest One Sustainability</collection><collection>ProQuest Central UK/Ireland</collection><collection>Advanced Technologies & Aerospace Collection</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>Natural Science Collection</collection><collection>Earth, Atmospheric & Aquatic Science Collection</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Engineering Research Database</collection><collection>ProQuest Central Student</collection><collection>Research Library Prep</collection><collection>Aerospace Database</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>SciTech Premium Collection</collection><collection>Civil Engineering Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>ProQuest Engineering Collection</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Research Library</collection><collection>Science Database</collection><collection>Engineering Database</collection><collection>Research Library (Corporate)</collection><collection>Advanced Technologies & Aerospace Database</collection><collection>ProQuest Advanced Technologies & Aerospace Collection</collection><collection>Earth, Atmospheric & Aquatic Science Database</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><collection>ProQuest Central Basic</collection><collection>DELNET Engineering & Technology Collection</collection><jtitle>Journal of fluid mechanics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>ISHIKAWA, TAKUJI</au><au>LOCSEI, J. T.</au><au>PEDLEY, T. J.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Development of coherent structures in concentrated suspensions of swimming model micro-organisms</atitle><jtitle>Journal of fluid mechanics</jtitle><addtitle>J. Fluid Mech</addtitle><date>2008-11-25</date><risdate>2008</risdate><volume>615</volume><spage>401</spage><epage>431</epage><pages>401-431</pages><issn>0022-1120</issn><eissn>1469-7645</eissn><coden>JFLSA7</coden><abstract>A swimming micro-organism is modelled as a squirming sphere with prescribed tangential surface velocity and referred to as a squirmer. The centre of mass of the sphere may be displaced from the geometric centre, and the effects of inertia and Brownian motion are neglected. The well-known Stokesian dynamics method is modified in order to simulate squirmer motions in a concentrated suspension. The movement of 216 identical squirmers in a concentrated suspension without any imposed flow is simulated in a cubic domain with periodic boundary conditions, and the coherent structures within the suspension are investigated. The results show that (a) a weak aggregation of cells appears as a result of the hydrodynamic interaction between cells; (b) the cells generate collective motions by the hydrodynamic interaction between themselves; and (c) the range and duration of the collective motions depend on the volume fraction and the squirmers' stresslet strengths. These tendencies show good qualitative agreement with previous experiments.</abstract><cop>Cambridge, UK</cop><pub>Cambridge University Press</pub><doi>10.1017/S0022112008003807</doi><tpages>31</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0022-1120 |
| ispartof | Journal of fluid mechanics, 2008-11, Vol.615, p.401-431 |
| issn | 0022-1120 1469-7645 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_35763591 |
| source | Cambridge University Press Journals Complete |
| subjects | Biological and medical sciences Boundary conditions Cell physiology Fluid dynamics Fluid mechanics Fundamental and applied biological sciences. Psychology Microorganisms Molecular and cellular biology Motility and taxis Surface velocity Swimming |
| title | Development of coherent structures in concentrated suspensions of swimming model micro-organisms |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-23T10%3A41%3A52IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Development%20of%20coherent%20structures%20in%20concentrated%20suspensions%20of%20swimming%20model%20micro-organisms&rft.jtitle=Journal%20of%20fluid%20mechanics&rft.au=ISHIKAWA,%20TAKUJI&rft.date=2008-11-25&rft.volume=615&rft.spage=401&rft.epage=431&rft.pages=401-431&rft.issn=0022-1120&rft.eissn=1469-7645&rft.coden=JFLSA7&rft_id=info:doi/10.1017/S0022112008003807&rft_dat=%3Cproquest_cross%3E35763591%3C/proquest_cross%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=210893929&rft_id=info:pmid/&rft_cupid=10_1017_S0022112008003807&rfr_iscdi=true |