Reduction of local scour at river confluences using a collar-中国期刊网

摘要 Riverconfluences(RCs)areimportantfeatureswithinriversystemswherethethreedimensional(3D)flowstructuresandthedownstreammixingofflowscancausedeepscourholes.Despitethis,fewmethodshavebeenproposedtocontrolscouringatRCs.Inthisstudy,applicationofacollarwasexperimentallyexaminedforlocalscourcontrolatthepointwheretworiversflowtogether.Inparticular,experimentaltestsweredonewithandwithoutcollarapplicationatthreedifferentlocations.Theresultsrevealthatthescourdepthisdirectlyproportionaltothedischargeratio,i.e.theratiooflateraldischargetothatinthechanneldownstreamoftheconfluence,andthedensimetricFroudenumber(Frg).Inaddition,installationofacollaratRCscandecreasethescourdepthupto100%,thuscompletelyavoidingthescourprocess.TheresultsalsoshowthatbyincreasingtheFrgtheoptimalinstallationlocationforacollarchangesandmovestowardstheriverbedlevel.Usingacollarcanalsoreducetheheightofthepointbarformeddownstreamoftheconfluence.Theoutcomesofthestudyallowderivationofanequationforpredictingscourdepthwhenacollarisappliedasacountermeasure.TheanalysisofthisequationshowsthattheestimatesaremostlyaffectedbytheFrg.

1Amir R. ZARRATI;Mohammad R. CHAMANI;Abolfazl SHAFAIE;Milad LATIFI. Scour countermeasures for cylindrical piers using riprap and combination of collar and riprap.地球物理学,2010-03.
2Baishan ZHANG Jiye MA Zhilin WEI. LOCAL SCOUR DEPTH AROUND SPURS IN THE LOWER YELLOW RIVER.地球物理学,2002-03.
3Er.Shri Ram CHAURASIA Pande B.B.LAL. LOCAL SCOUR AROUND BRIDGE ABUTMENTS.地球物理学,2002-01.
4SubhasishDEY. LOCAL　SCOUR　AT　PIERS,PART　II:BIBLIOGRAPHY.地球物理学,1997-02.
5SubhasishDEY. LOCAL　SCOUR　AT　PIERS,PART　I:A　REVIEW　OF　DEVELOPMENTS　OF　RESEARCH.地球物理学,1997-02.
6Elham IZADINIA;Manouchehr HEIDARPOUR. Simultaneous use of cable and collar to prevent local scouring around bridge pier.地球物理学,2012-03.
7Tong Lin;Yao Liu;Bo Wang;Li-Wei Wang;Hong-Bin Zha. Nonlinear Dimensionality Reduction by Local Orthogonality Preserving Alignment.计算机科学与技术,2016-03.
8M. Anisul HAQUE Md. Munsur RAHMAN G.M. Tarekul ISLAM M. Asad HUSSAIN. SCOUR MITIGATION AT BRIDGE PIERS USING SACRIFICIAL PILES.地球物理学,2007-01.
9Violaine DUGU;Koen BLANCKAERT;Qiuwen CHEN;Anton J.SCHLEISS. Reduction of bend scour with an air-bubble screen - morphology and flow patterns.地球物理学,2013-01.
10Daxian FANG;Jueyi SUI;Ronald W.THRING;Hongya ZHANG. IMPACTS OF DIMENSION AND SLOPE OF SUBMERGED SPUR DIKES ON LOCAL SCOUR PROCESSES - AN EXPERIMENTAL STUDY.地球物理学,2006-02.

Reduction of local scour at river confluences using a collar

来源期刊

相关推荐

同分类资源更多

相关关键词

Reduction of local scour at river confluences using a collar

来源期刊

相关推荐

同分类资源 更多

相关关键词

同分类资源更多