Formation of a jump by the dam-break wave over a granular bed
A previously unreported shock feature associated with the scouring of a horizontal granular bed by a dam-break wave is discussed. Near the wave centre, the present study shows, the free surface breaks backward and a hydraulic jump forms. This behaviour is described from the standpoint of shallow-wat...
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| Veröffentlicht in: | Journal of fluid mechanics 1998-10, Vol.372, p.165-187 |
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| container_title | Journal of fluid mechanics |
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| creator | CAPART, H. YOUNG, D. L. |
| description | A previously unreported shock feature associated with the scouring
of a horizontal
granular bed by a dam-break wave is discussed. Near the wave centre, the
present
study shows, the free surface breaks backward and a hydraulic jump forms.
This behaviour
is described from the standpoint of shallow-water theory, suitably extended
to deal with non-equilibrium sediment transport. The shock formation involves
a
particularly strong coupling between flow free-surface evolution and bed
morphodynamics.
Support for our conclusions is sought through experimental and numerical
approaches. In order to magnify the observed phenomena, measurements were
performed
for the case of light bed particles moving in sheet and debris flow modes.
A detailed picture of the transient two-phase flow is presented, based
on whole
field acquisition of the grain motions by particle tracking techniques.
Corresponding
shallow-water solutions are constructed numerically using a shock capturing
scheme.
Finally, an interpretation of the jump formation is proposed based on the
theory of
characteristics. |
| doi_str_mv | 10.1017/S0022112098002250 |
| format | Article |
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of a horizontal
granular bed by a dam-break wave is discussed. Near the wave centre, the
present
study shows, the free surface breaks backward and a hydraulic jump forms.
This behaviour
is described from the standpoint of shallow-water theory, suitably extended
to deal with non-equilibrium sediment transport. The shock formation involves
a
particularly strong coupling between flow free-surface evolution and bed
morphodynamics.
Support for our conclusions is sought through experimental and numerical
approaches. In order to magnify the observed phenomena, measurements were
performed
for the case of light bed particles moving in sheet and debris flow modes.
A detailed picture of the transient two-phase flow is presented, based
on whole
field acquisition of the grain motions by particle tracking techniques.
Corresponding
shallow-water solutions are constructed numerically using a shock capturing
scheme.
Finally, an interpretation of the jump formation is proposed based on the
theory of
characteristics.</description><identifier>ISSN: 0022-1120</identifier><identifier>EISSN: 1469-7645</identifier><identifier>DOI: 10.1017/S0022112098002250</identifier><identifier>CODEN: JFLSA7</identifier><language>eng</language><publisher>Cambridge: Cambridge University Press</publisher><subject>Applied sciences ; Buildings. Public works ; Computation methods. Tables. Charts ; Dams and subsidiary installations ; Exact sciences and technology ; Hydraulic constructions ; Structural analysis. Stresses</subject><ispartof>Journal of fluid mechanics, 1998-10, Vol.372, p.165-187</ispartof><rights>1998 Cambridge University Press</rights><rights>1998 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c468t-337e8021b8eb2cce74f1797475b3f45f55eee2fa0ae66b064df30b8cadcf0c603</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.cambridge.org/core/product/identifier/S0022112098002250/type/journal_article$$EHTML$$P50$$Gcambridge$$H</linktohtml><link.rule.ids>164,314,776,780,27901,27902,55603</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=2415677$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>CAPART, H.</creatorcontrib><creatorcontrib>YOUNG, D. L.</creatorcontrib><title>Formation of a jump by the dam-break wave over a granular bed</title><title>Journal of fluid mechanics</title><addtitle>J. Fluid Mech</addtitle><description>A previously unreported shock feature associated with the scouring
of a horizontal
granular bed by a dam-break wave is discussed. Near the wave centre, the
present
study shows, the free surface breaks backward and a hydraulic jump forms.
This behaviour
is described from the standpoint of shallow-water theory, suitably extended
to deal with non-equilibrium sediment transport. The shock formation involves
a
particularly strong coupling between flow free-surface evolution and bed
morphodynamics.
Support for our conclusions is sought through experimental and numerical
approaches. In order to magnify the observed phenomena, measurements were
performed
for the case of light bed particles moving in sheet and debris flow modes.
A detailed picture of the transient two-phase flow is presented, based
on whole
field acquisition of the grain motions by particle tracking techniques.
Corresponding
shallow-water solutions are constructed numerically using a shock capturing
scheme.
Finally, an interpretation of the jump formation is proposed based on the
theory of
characteristics.</description><subject>Applied sciences</subject><subject>Buildings. Public works</subject><subject>Computation methods. Tables. Charts</subject><subject>Dams and subsidiary installations</subject><subject>Exact sciences and technology</subject><subject>Hydraulic constructions</subject><subject>Structural analysis. Stresses</subject><issn>0022-1120</issn><issn>1469-7645</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1998</creationdate><recordtype>article</recordtype><recordid>eNp9j09PAjEQxRujiYh-AG89eF3t_-4ePCgRNMEYI56btjvFBZYlLaB8e3cD4WLiaSbzfm_yHkLXlNxSQvXdByGMUcpIkXebJCeoR4UqMq2EPEW97ph1-jm6SGlGCOWk0D10P2xibddVs8RNwBbPNvUKux1efwEubZ25CHaOv-0WcLOF2BLTaJebhY3YQXmJzoJdJLg6zD76HD5NBs_Z-G30MngYZ16ofJ1xriEnjLocHPMetAhUF1po6XgQMkgJACxYYkEpR5QoAycu97b0gXhFeB_R_V8fm5QiBLOKVW3jzlBiuv7mT__Wc7P3rGzydhHa2L5KRyMTVCqtWyzbY1Vaw89RtnFulOZaGjV6N5I9jvWkeDXDlueHKLZ2sSqnYGbNJi7b-v-E-QX0j3cf</recordid><startdate>19981010</startdate><enddate>19981010</enddate><creator>CAPART, H.</creator><creator>YOUNG, D. L.</creator><general>Cambridge University Press</general><scope>BSCLL</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>19981010</creationdate><title>Formation of a jump by the dam-break wave over a granular bed</title><author>CAPART, H. ; YOUNG, D. L.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c468t-337e8021b8eb2cce74f1797475b3f45f55eee2fa0ae66b064df30b8cadcf0c603</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1998</creationdate><topic>Applied sciences</topic><topic>Buildings. Public works</topic><topic>Computation methods. Tables. Charts</topic><topic>Dams and subsidiary installations</topic><topic>Exact sciences and technology</topic><topic>Hydraulic constructions</topic><topic>Structural analysis. Stresses</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>CAPART, H.</creatorcontrib><creatorcontrib>YOUNG, D. L.</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><jtitle>Journal of fluid mechanics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>CAPART, H.</au><au>YOUNG, D. L.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Formation of a jump by the dam-break wave over a granular bed</atitle><jtitle>Journal of fluid mechanics</jtitle><addtitle>J. Fluid Mech</addtitle><date>1998-10-10</date><risdate>1998</risdate><volume>372</volume><spage>165</spage><epage>187</epage><pages>165-187</pages><issn>0022-1120</issn><eissn>1469-7645</eissn><coden>JFLSA7</coden><abstract>A previously unreported shock feature associated with the scouring
of a horizontal
granular bed by a dam-break wave is discussed. Near the wave centre, the
present
study shows, the free surface breaks backward and a hydraulic jump forms.
This behaviour
is described from the standpoint of shallow-water theory, suitably extended
to deal with non-equilibrium sediment transport. The shock formation involves
a
particularly strong coupling between flow free-surface evolution and bed
morphodynamics.
Support for our conclusions is sought through experimental and numerical
approaches. In order to magnify the observed phenomena, measurements were
performed
for the case of light bed particles moving in sheet and debris flow modes.
A detailed picture of the transient two-phase flow is presented, based
on whole
field acquisition of the grain motions by particle tracking techniques.
Corresponding
shallow-water solutions are constructed numerically using a shock capturing
scheme.
Finally, an interpretation of the jump formation is proposed based on the
theory of
characteristics.</abstract><cop>Cambridge</cop><pub>Cambridge University Press</pub><doi>10.1017/S0022112098002250</doi><tpages>23</tpages></addata></record> |
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| identifier | ISSN: 0022-1120 |
| ispartof | Journal of fluid mechanics, 1998-10, Vol.372, p.165-187 |
| issn | 0022-1120 1469-7645 |
| language | eng |
| recordid | cdi_crossref_primary_10_1017_S0022112098002250 |
| source | Cambridge Journals Online |
| subjects | Applied sciences Buildings. Public works Computation methods. Tables. Charts Dams and subsidiary installations Exact sciences and technology Hydraulic constructions Structural analysis. Stresses |
| title | Formation of a jump by the dam-break wave over a granular bed |
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