Please use this identifier to cite or link to this item: http://hdl.handle.net/10603/72575
Title: Experimental investigation of flow characteristics of various planform labyrinth weirs
Researcher: Gupta, Keerat Kumar
Guide(s): Sanjeev Kumar
University: Graphic Era University
Completed Date: 26-10-2015
Abstract: Weirsareacommonandusefulhydraulicstructureforawiderangeofapplications(egcanalspondsriversreservoirsandothers)TheyhavebeenwidelyusedforthepurposeofflowmeasurementGenerallytheyareusedasnormalweirswhichcausewatertopoolbehindthemwhileallowingwatertoflowsteadilyovertheirtopsposeproblemsofsubmergenceupstreamoftheweirduetolargeaffluxrequiredtopassthedischargedownstreamForpassingmoredischargewithlowheadtheweirsofvariousmodifiedplanformhavebeensuggestedinthepasttoenhancetheirdischargingcapacitywithminimumheadovertheweirsandtorestricttheaffluxAninnovativeandeffectivewayofincreasingthespillwaycapacityistousealabyrinthweirTheconceptofthelabyrinthweiristovarytheplanshapeofthecresttoincreasetheeffectivecrestlengthItisparticularlysuitedforusewherethespillwaywidthisrestrictedorwherethefloodsurchargespaceislimitedThelabyrinthisrelativelylowcostwhencomparedwithgatedspillwaysandthishasledtoitsuseinconjunctionwiththeraisingofdamsforincreasedstoragespaceAlabyrinthweirhasadvantagescomparedtothestraightoverflowweirandthestandardogeecrestLabyrinthweirscanbeusedtoincreaseoutletcapacityforagivenspillwaycrestelevationandlengthortoincreasestoragebyraisingthecrestwhilemaintainingspillwaycapacityThesestructuresofferseveraladvantageswhencomparedtolinearweirstructuresLabyrinthweirsprovideanincreaseincrestlengthforagivenchannelwidththerebyincreasingflowcapacityforagivenupstreamhead.Asaresultoftheincreasedflowcapacitytheseweirsrequirelessfreeboardintheupstreamreservoirthanlinearweirswhichfacilitatesfloodroutingandincreasesreservoirstoragecapacityunderbaseflowconditions(weirheightmaybeincreased)LabyrinthweirscanthereforebeusedtoaparticularadvantagewherethewidthofachannelisrestrictedandaweirisrequiredtopassarangeofdischargeswithalimitedvariationinupstreamwaterlevelButacollectivecomparativeanalysisofdifferentplanformlabyrinthweirsisscarceFurtheravailableinformationoneffectofvariousparametersonthedischargingcapacityoflabyrinthweirisalsoverylittle.Informationrelatedtotheequationanddesignchartisavailableonlyforaparticularplanformweirinvestigatedbyvario
URI: http://hdl.handle.net/10603/72575
Appears in Departments:Department of Civil Engineering

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03_acknowledgements.pdf19.6 kBAdobe PDFView/Open
04_abstract.pdf28.32 kBAdobe PDFView/Open
05_contents.pdf27.52 kBAdobe PDFView/Open
06_list of figures.pdf54.87 kBAdobe PDFView/Open
07_list of tables.pdf17.31 kBAdobe PDFView/Open
08_notations.pdf20.79 kBAdobe PDFView/Open
09_chapter 1.pdf87.5 kBAdobe PDFView/Open
10_chapter 2.pdfAttached File616.73 kBAdobe PDFView/Open
11_chapter 3.pdf1.34 MBAdobe PDFView/Open
12_chapter 4.pdf5.04 MBAdobe PDFView/Open
13_chapter 5.pdf1.52 MBAdobe PDFView/Open
14_chapter 6.pdf1.55 MBAdobe PDFView/Open
15_chapter 7.pdf28.74 kBAdobe PDFView/Open
16_annexture 1.pdf202.9 kBAdobe PDFView/Open
17_annexure ii.pdf209.8 kBAdobe PDFView/Open
18_annexure iii.pdf196.41 kBAdobe PDFView/Open
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20_annexure v.pdf209.86 kBAdobe PDFView/Open
21_references.pdf48.02 kBAdobe PDFView/Open
22_publications.pdf34.47 kBAdobe PDFView/Open


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