Hydrodynamics of groyne fields in a straight river reach: insight from field experiments
This study explores the three-dimensional structure of turbulent flow around a sequence of groynes in a river reach under semi-controlled conditions. Detailed measurements were carried out in groyne fields with aspect ratios (length of groynes/distance between successive groynes) of 0.75 and 0.35 fo...
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| Veröffentlicht in: | Journal of hydraulic research 2014-01, Vol.52 (1), p.105-120 |
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| creator | Sukhodolov, Alexander N. |
| description | This study explores the three-dimensional structure of turbulent flow around a sequence of groynes in a river reach under semi-controlled conditions. Detailed measurements were carried out in groyne fields with aspect ratios (length of groynes/distance between successive groynes) of 0.75 and 0.35 for emerged and submerged conditions and provided detailed spatial patterns of mean and turbulent fluxes of momentum. The results indicate that in mixing interfaces the vertical fluxes of turbulent momentum are dominant near the riverbed whereas horizontal fluxes dominate near the surface. Strong three-dimensional effects are reported for submerged groynes when a wake is formed at the leeward side. Groyne sequences increase flow resistance mainly by flow constriction that in turn generates an increase in velocity and bed shear stress in the main channel, rather than by production of excessive turbulence near the groynes. |
| doi_str_mv | 10.1080/00221686.2014.880859 |
| format | Article |
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Groyne sequences increase flow resistance mainly by flow constriction that in turn generates an increase in velocity and bed shear stress in the main channel, rather than by production of excessive turbulence near the groynes.</description><subject>Aircraft</subject><subject>Earth sciences</subject><subject>Earth, ocean, space</subject><subject>Exact sciences and technology</subject><subject>Fluid dynamics</subject><subject>Fluid flow</subject><subject>Fluid mechanics</subject><subject>Fluxes</subject><subject>Freshwater</subject><subject>Groyne fields</subject><subject>Groynes</subject><subject>Hydrology</subject><subject>Hydrology. Hydrogeology</subject><subject>Marine and continental quaternary</subject><subject>recirculation flow</subject><subject>Rivers</subject><subject>sand bed river</subject><subject>shear layer</subject><subject>Surficial geology</subject><subject>Three dimensional</subject><subject>Turbulence</subject><subject>Turbulent flow</subject><issn>0022-1686</issn><issn>1814-2079</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><recordid>eNqF0c9LHDEUB_BQFLpq_4MeAqXgZdb82kzipYi0KgheFHoL2ZkXjcxM1pdZ2_nvzTraQw_tKST5vJc8voR85mzJmWEnjAnBtdFLwbhaGsPMyn4gC264qgSr7R5Z7Ei1Mx_JQc6PZau11Qvy83JqMbXT4PvYZJoCvcc0DUBDhK7NNA7U0zyij_cPI8X4DEgRfPNwWq7y62HA1M-cwu8NYOxhGPMR2Q--y_DpbT0kdz--355fVtc3F1fnZ9dVoyQfqxa89nK9NkYGsK2GuhZKcal5-b1m0goP3oK0amVVAGB1XQcj1mBV3VhYy0NyPPfdYHraQh5dH3MDXecHSNvsuFZCstJJ_Z-uBJM1Z1wU-uUv-pi2OJRBimKaC2O1LkrNqsGUM0JwmzK9x8lx5nbJuPdk3C4ZNydTyr6-Nfe58V1APzQx_6kVRipVYHHfZheHkLD3vxJ2rRv91CV8L5L_fOkF9X6gag</recordid><startdate>20140102</startdate><enddate>20140102</enddate><creator>Sukhodolov, Alexander N.</creator><general>Taylor & Francis</general><general>International Association for Hydraulic Research</general><general>Taylor & Francis Ltd</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QH</scope><scope>7TB</scope><scope>7UA</scope><scope>8FD</scope><scope>C1K</scope><scope>F1W</scope><scope>FR3</scope><scope>H96</scope><scope>KR7</scope><scope>L.G</scope></search><sort><creationdate>20140102</creationdate><title>Hydrodynamics of groyne fields in a straight river reach: insight from field experiments</title><author>Sukhodolov, Alexander N.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c431t-dea6a3bb883fe9d6e77244136118160392aea9e394594fee0777f82be947c9eb3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Aircraft</topic><topic>Earth sciences</topic><topic>Earth, ocean, space</topic><topic>Exact sciences and technology</topic><topic>Fluid dynamics</topic><topic>Fluid flow</topic><topic>Fluid mechanics</topic><topic>Fluxes</topic><topic>Freshwater</topic><topic>Groyne fields</topic><topic>Groynes</topic><topic>Hydrology</topic><topic>Hydrology. Hydrogeology</topic><topic>Marine and continental quaternary</topic><topic>recirculation flow</topic><topic>Rivers</topic><topic>sand bed river</topic><topic>shear layer</topic><topic>Surficial geology</topic><topic>Three dimensional</topic><topic>Turbulence</topic><topic>Turbulent flow</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Sukhodolov, Alexander N.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Aqualine</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Water Resources Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Engineering Research Database</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Civil Engineering Abstracts</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>Sukhodolov, Alexander N.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Hydrodynamics of groyne fields in a straight river reach: insight from field experiments</atitle><jtitle>Journal of hydraulic research</jtitle><date>2014-01-02</date><risdate>2014</risdate><volume>52</volume><issue>1</issue><spage>105</spage><epage>120</epage><pages>105-120</pages><issn>0022-1686</issn><eissn>1814-2079</eissn><coden>JHYRAF</coden><abstract>This study explores the three-dimensional structure of turbulent flow around a sequence of groynes in a river reach under semi-controlled conditions. 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| ispartof | Journal of hydraulic research, 2014-01, Vol.52 (1), p.105-120 |
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| language | eng |
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| source | Taylor & Francis Journals Complete |
| subjects | Aircraft Earth sciences Earth, ocean, space Exact sciences and technology Fluid dynamics Fluid flow Fluid mechanics Fluxes Freshwater Groyne fields Groynes Hydrology Hydrology. Hydrogeology Marine and continental quaternary recirculation flow Rivers sand bed river shear layer Surficial geology Three dimensional Turbulence Turbulent flow |
| title | Hydrodynamics of groyne fields in a straight river reach: insight from field experiments |
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