A preliminary study on the turbulence structure of flows of non-Newtonian fluid
The turbulence structure of flows of clay suspensions in smooth-boundary open channels were experimentally studied. Clay suspensions are non-Newtonian fluids. Transition from laminar to turbulent flows occurs when a Reynolds number Re m is between 2,000 and 10.000. Three layers can be identified in...
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| Veröffentlicht in: | Journal of hydraulic research 1996-05, Vol.34 (3), p.345-361 |
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| creator | Wang, Zhaoyin Plate, Eri C H J. |
| description | The turbulence structure of flows of clay suspensions in smooth-boundary open channels were experimentally studied. Clay suspensions are non-Newtonian fluids. Transition from laminar to turbulent flows occurs when a Reynolds number Re
m
is between 2,000 and 10.000. Three layers can be identified in transitional flows, i.e. a) laminar sublayer, b) turbulent layer, and c) upper layer. In the upper layer the turbulence intensity is low or even equal to zero. The flow between the turbulent layer and the laminar sublayer is alternatively laminar and turbulent. For various concentrations of clay suspension the mean velocity profiles follow the Coles' velocity formula with negative wake parameter and smaller Karman constant. The distribution of turbulence intensity is far more nonuniform than that of water flow. The probability density and autocorrelation coefficient are discussed and it is concluded that the turbulence in the non-Newtonian flow is produced in the turbulent layer and high frequency turbulence is suppressed by the high viscosity and yield stress. |
| doi_str_mv | 10.1080/00221689609498484 |
| format | Article |
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m
is between 2,000 and 10.000. Three layers can be identified in transitional flows, i.e. a) laminar sublayer, b) turbulent layer, and c) upper layer. In the upper layer the turbulence intensity is low or even equal to zero. The flow between the turbulent layer and the laminar sublayer is alternatively laminar and turbulent. For various concentrations of clay suspension the mean velocity profiles follow the Coles' velocity formula with negative wake parameter and smaller Karman constant. The distribution of turbulence intensity is far more nonuniform than that of water flow. The probability density and autocorrelation coefficient are discussed and it is concluded that the turbulence in the non-Newtonian flow is produced in the turbulent layer and high frequency turbulence is suppressed by the high viscosity and yield stress.</description><identifier>ISSN: 0022-1686</identifier><identifier>EISSN: 1814-2079</identifier><identifier>DOI: 10.1080/00221689609498484</identifier><identifier>CODEN: JHYRAF</identifier><language>eng</language><publisher>Delft: Taylor & Francis Group</publisher><subject>Earth sciences ; Earth, ocean, space ; Exact sciences and technology ; Freshwater ; Hydrology ; Hydrology. Hydrogeology</subject><ispartof>Journal of hydraulic research, 1996-05, Vol.34 (3), p.345-361</ispartof><rights>Copyright Taylor & Francis Group, LLC 1996</rights><rights>1996 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c422t-6339e8b1353f6cde2e725a530c8dd5b25752dd6703309e6689cafa6b9147e63a3</citedby><cites>FETCH-LOGICAL-c422t-6339e8b1353f6cde2e725a530c8dd5b25752dd6703309e6689cafa6b9147e63a3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.tandfonline.com/doi/pdf/10.1080/00221689609498484$$EPDF$$P50$$Ginformaworld$$H</linktopdf><linktohtml>$$Uhttps://www.tandfonline.com/doi/full/10.1080/00221689609498484$$EHTML$$P50$$Ginformaworld$$H</linktohtml><link.rule.ids>314,776,780,27903,27904,59623,60412</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=3155246$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Wang, Zhaoyin</creatorcontrib><creatorcontrib>Plate, Eri C H J.</creatorcontrib><title>A preliminary study on the turbulence structure of flows of non-Newtonian fluid</title><title>Journal of hydraulic research</title><description>The turbulence structure of flows of clay suspensions in smooth-boundary open channels were experimentally studied. Clay suspensions are non-Newtonian fluids. Transition from laminar to turbulent flows occurs when a Reynolds number Re
m
is between 2,000 and 10.000. Three layers can be identified in transitional flows, i.e. a) laminar sublayer, b) turbulent layer, and c) upper layer. In the upper layer the turbulence intensity is low or even equal to zero. The flow between the turbulent layer and the laminar sublayer is alternatively laminar and turbulent. For various concentrations of clay suspension the mean velocity profiles follow the Coles' velocity formula with negative wake parameter and smaller Karman constant. The distribution of turbulence intensity is far more nonuniform than that of water flow. The probability density and autocorrelation coefficient are discussed and it is concluded that the turbulence in the non-Newtonian flow is produced in the turbulent layer and high frequency turbulence is suppressed by the high viscosity and yield stress.</description><subject>Earth sciences</subject><subject>Earth, ocean, space</subject><subject>Exact sciences and technology</subject><subject>Freshwater</subject><subject>Hydrology</subject><subject>Hydrology. Hydrogeology</subject><issn>0022-1686</issn><issn>1814-2079</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1996</creationdate><recordtype>article</recordtype><recordid>eNp1kMtKAzEUhoMoWC8P4G4W4m4095mAm1K8QbEbXQ-ZXDCSSWoyQ-nbm9LqRlyd2_f_h3MAuELwFsEW3kGIMeKt4FBQ0dKWHoEZahGtMWzEMZjt5nUB-Ck4y_mzlJwLPgOrebVOxrvBBZm2VR4nva1iqMYPU41T6idvgjKlnyZValNFW1kfN3mXhBjqV7MZY3AylPbk9AU4sdJnc3mI5-D98eFt8VwvV08vi_myVhTjseaECNP2iDBiudIGmwYzyQhUrdasx6xhWGveQEKgMLwcpqSVvBeINoYTSc7Bzd53neLXZPLYDS4r470MJk65Q4w3GGNaQLQHVYo5J2O7dXJDubVDsNu9rvvzuqK5PpjLrKS3SQbl8q-QIMYw5QW732Mu2JgGuYnJ626UWx_Tj4b8v-UbPuqAkA</recordid><startdate>199605</startdate><enddate>199605</enddate><creator>Wang, Zhaoyin</creator><creator>Plate, Eri C H J.</creator><general>Taylor & Francis Group</general><general>International Association for Hydraulic Research</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7UA</scope><scope>C1K</scope><scope>F1W</scope><scope>H96</scope><scope>L.G</scope></search><sort><creationdate>199605</creationdate><title>A preliminary study on the turbulence structure of flows of non-Newtonian fluid</title><author>Wang, Zhaoyin ; Plate, Eri C H J.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c422t-6339e8b1353f6cde2e725a530c8dd5b25752dd6703309e6689cafa6b9147e63a3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1996</creationdate><topic>Earth sciences</topic><topic>Earth, ocean, space</topic><topic>Exact sciences and technology</topic><topic>Freshwater</topic><topic>Hydrology</topic><topic>Hydrology. Hydrogeology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Wang, Zhaoyin</creatorcontrib><creatorcontrib>Plate, Eri C H J.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Water Resources Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><jtitle>Journal of hydraulic research</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Wang, Zhaoyin</au><au>Plate, Eri C H J.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A preliminary study on the turbulence structure of flows of non-Newtonian fluid</atitle><jtitle>Journal of hydraulic research</jtitle><date>1996-05</date><risdate>1996</risdate><volume>34</volume><issue>3</issue><spage>345</spage><epage>361</epage><pages>345-361</pages><issn>0022-1686</issn><eissn>1814-2079</eissn><coden>JHYRAF</coden><abstract>The turbulence structure of flows of clay suspensions in smooth-boundary open channels were experimentally studied. Clay suspensions are non-Newtonian fluids. Transition from laminar to turbulent flows occurs when a Reynolds number Re
m
is between 2,000 and 10.000. Three layers can be identified in transitional flows, i.e. a) laminar sublayer, b) turbulent layer, and c) upper layer. In the upper layer the turbulence intensity is low or even equal to zero. The flow between the turbulent layer and the laminar sublayer is alternatively laminar and turbulent. For various concentrations of clay suspension the mean velocity profiles follow the Coles' velocity formula with negative wake parameter and smaller Karman constant. The distribution of turbulence intensity is far more nonuniform than that of water flow. The probability density and autocorrelation coefficient are discussed and it is concluded that the turbulence in the non-Newtonian flow is produced in the turbulent layer and high frequency turbulence is suppressed by the high viscosity and yield stress.</abstract><cop>Delft</cop><pub>Taylor & Francis Group</pub><doi>10.1080/00221689609498484</doi><tpages>17</tpages></addata></record> |
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| ispartof | Journal of hydraulic research, 1996-05, Vol.34 (3), p.345-361 |
| issn | 0022-1686 1814-2079 |
| language | eng |
| recordid | cdi_pascalfrancis_primary_3155246 |
| source | Taylor & Francis Journals Complete |
| subjects | Earth sciences Earth, ocean, space Exact sciences and technology Freshwater Hydrology Hydrology. Hydrogeology |
| title | A preliminary study on the turbulence structure of flows of non-Newtonian fluid |
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