Mechanics of jet scour downstream of a headcut
Scour immediately downstream of a headcut is analyzed by considering the effect of jet diffusion on sediment detachment. The analytical development results in equations for: 1. the equilibrium scour depth; 2. the rate of scour hole development. These equations are applicable for a variety of jet con...
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| Veröffentlicht in: | Journal of hydraulic research 1993-11, Vol.31 (6), p.723-738 |
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| container_title | Journal of hydraulic research |
| container_volume | 31 |
| creator | Stein, O. R. Julien, P. Y. Alonso, C. V. |
| description | Scour immediately downstream of a headcut is analyzed by considering the effect of jet diffusion on sediment detachment. The analytical development results in equations for:
1. the equilibrium scour depth;
2. the rate of scour hole development.
These equations are applicable for a variety of jet configurations and any bed material including cohesive soils. The equations are tested in laboratory simulated headcuts on bed materials consisting of two noncohesive uniform sands and one cohesive natural soil. The agreement between measured and predicted rates of scour depth increase shows that scour does not increase as a semi-logarithmic function of time. The rate of scour depth increase is very rapid for depths less than 95% of the equilibrium scour depth. Graphical solutions for the rate of scour depth increase are in agreement with the experimental measurements. |
| doi_str_mv | 10.1080/00221689309498814 |
| format | Article |
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1. the equilibrium scour depth;
2. the rate of scour hole development.
These equations are applicable for a variety of jet configurations and any bed material including cohesive soils. The equations are tested in laboratory simulated headcuts on bed materials consisting of two noncohesive uniform sands and one cohesive natural soil. The agreement between measured and predicted rates of scour depth increase shows that scour does not increase as a semi-logarithmic function of time. The rate of scour depth increase is very rapid for depths less than 95% of the equilibrium scour depth. Graphical solutions for the rate of scour depth increase are in agreement with the experimental measurements.</description><identifier>ISSN: 0022-1686</identifier><identifier>EISSN: 1814-2079</identifier><identifier>DOI: 10.1080/00221689309498814</identifier><identifier>CODEN: JHYRAF</identifier><language>eng</language><publisher>Delft: Taylor & Francis Group</publisher><subject>Earth sciences ; Earth, ocean, space ; Exact sciences and technology ; Geomorphology, landform evolution ; Hydrology ; Hydrology. Hydrogeology ; Surficial geology</subject><ispartof>Journal of hydraulic research, 1993-11, Vol.31 (6), p.723-738</ispartof><rights>Copyright Taylor & Francis Group, LLC 1993</rights><rights>1994 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c422t-fd160897a172ffe03f0f711acf510e8db63a50b1555f8a2720ffad9889bad4043</citedby><cites>FETCH-LOGICAL-c422t-fd160897a172ffe03f0f711acf510e8db63a50b1555f8a2720ffad9889bad4043</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.tandfonline.com/doi/pdf/10.1080/00221689309498814$$EPDF$$P50$$Ginformaworld$$H</linktopdf><linktohtml>$$Uhttps://www.tandfonline.com/doi/full/10.1080/00221689309498814$$EHTML$$P50$$Ginformaworld$$H</linktohtml><link.rule.ids>314,776,780,27901,27902,59620,60409</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=3848341$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Stein, O. R.</creatorcontrib><creatorcontrib>Julien, P. Y.</creatorcontrib><creatorcontrib>Alonso, C. V.</creatorcontrib><title>Mechanics of jet scour downstream of a headcut</title><title>Journal of hydraulic research</title><description>Scour immediately downstream of a headcut is analyzed by considering the effect of jet diffusion on sediment detachment. The analytical development results in equations for:
1. the equilibrium scour depth;
2. the rate of scour hole development.
These equations are applicable for a variety of jet configurations and any bed material including cohesive soils. The equations are tested in laboratory simulated headcuts on bed materials consisting of two noncohesive uniform sands and one cohesive natural soil. The agreement between measured and predicted rates of scour depth increase shows that scour does not increase as a semi-logarithmic function of time. The rate of scour depth increase is very rapid for depths less than 95% of the equilibrium scour depth. Graphical solutions for the rate of scour depth increase are in agreement with the experimental measurements.</description><subject>Earth sciences</subject><subject>Earth, ocean, space</subject><subject>Exact sciences and technology</subject><subject>Geomorphology, landform evolution</subject><subject>Hydrology</subject><subject>Hydrology. Hydrogeology</subject><subject>Surficial geology</subject><issn>0022-1686</issn><issn>1814-2079</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1993</creationdate><recordtype>article</recordtype><recordid>eNp1kE9PwzAMxSMEEmPwAbj1gLh12EmbphIXNPFPGuIC58pLE61T24yk1bRvT6YNLoiTZfv3nq3H2DXCDEHBHQDnKFUpoMxKpTA7YROMJeVQlKdsst-nEZDn7CKEdWylLOWEzd6MXlHf6JA4m6zNkATtRp_UbtuHwRvq9nNKVoZqPQ6X7MxSG8zVsU7Z59Pjx_wlXbw_v84fFqnOOB9SW6MEVRaEBbfWgLBgC0TSNkcwql5KQTksMc9zq4gXHKylOv5dLqnOIBNTdnvw3Xj3NZowVF0TtGlb6o0bQ8WjvUTMI4gHUHsXgje22vimI7-rEKp9MtWfZKLm5mhOQVNrPfW6Cb9CoTIlMozY_QFreut8R1vn27oaaNc6_6MR_1_5Bs9CdAI</recordid><startdate>199311</startdate><enddate>199311</enddate><creator>Stein, O. R.</creator><creator>Julien, P. Y.</creator><creator>Alonso, C. V.</creator><general>Taylor & Francis Group</general><general>International Association for Hydraulic Research</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>FR3</scope><scope>KR7</scope></search><sort><creationdate>199311</creationdate><title>Mechanics of jet scour downstream of a headcut</title><author>Stein, O. R. ; Julien, P. Y. ; Alonso, C. V.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c422t-fd160897a172ffe03f0f711acf510e8db63a50b1555f8a2720ffad9889bad4043</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1993</creationdate><topic>Earth sciences</topic><topic>Earth, ocean, space</topic><topic>Exact sciences and technology</topic><topic>Geomorphology, landform evolution</topic><topic>Hydrology</topic><topic>Hydrology. Hydrogeology</topic><topic>Surficial geology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Stein, O. R.</creatorcontrib><creatorcontrib>Julien, P. Y.</creatorcontrib><creatorcontrib>Alonso, C. V.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Civil Engineering Abstracts</collection><jtitle>Journal of hydraulic research</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Stein, O. R.</au><au>Julien, P. Y.</au><au>Alonso, C. V.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Mechanics of jet scour downstream of a headcut</atitle><jtitle>Journal of hydraulic research</jtitle><date>1993-11</date><risdate>1993</risdate><volume>31</volume><issue>6</issue><spage>723</spage><epage>738</epage><pages>723-738</pages><issn>0022-1686</issn><eissn>1814-2079</eissn><coden>JHYRAF</coden><abstract>Scour immediately downstream of a headcut is analyzed by considering the effect of jet diffusion on sediment detachment. The analytical development results in equations for:
1. the equilibrium scour depth;
2. the rate of scour hole development.
These equations are applicable for a variety of jet configurations and any bed material including cohesive soils. The equations are tested in laboratory simulated headcuts on bed materials consisting of two noncohesive uniform sands and one cohesive natural soil. The agreement between measured and predicted rates of scour depth increase shows that scour does not increase as a semi-logarithmic function of time. The rate of scour depth increase is very rapid for depths less than 95% of the equilibrium scour depth. Graphical solutions for the rate of scour depth increase are in agreement with the experimental measurements.</abstract><cop>Delft</cop><pub>Taylor & Francis Group</pub><doi>10.1080/00221689309498814</doi><tpages>16</tpages></addata></record> |
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| ispartof | Journal of hydraulic research, 1993-11, Vol.31 (6), p.723-738 |
| issn | 0022-1686 1814-2079 |
| language | eng |
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| source | Taylor & Francis |
| subjects | Earth sciences Earth, ocean, space Exact sciences and technology Geomorphology, landform evolution Hydrology Hydrology. Hydrogeology Surficial geology |
| title | Mechanics of jet scour downstream of a headcut |
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