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1、大工11秋《水力学》在线作业2（Greatworks,11autumn,hydraulics,onlinehomework,2）Inthefallof11"hydraulics"onlinehomework2First,determinetheproblem1.inpressurepipelinewaterhammerphenomenoninacycleoffour6L/clongtimeforwaterhammerwave.A.errorB.rightAnswer:A1.depthofopenchannelflowflowpatterndiscriminationmethod,whe
2、nthewaterdepthislargerthanthecriticaldepth,jetflow.A.errorB.rightAnswer:AThe1.N-Nline,K-lineisthreeKandthebottomslopeperpendicularline.A.errorB.rightAnswer:A2.theequivalentmodulusofflowthroughthecanalbottomslopei=0flow.A.errorB.rightAnswer:A2.criticalslope,N-NlineandK-lineoverlap.A.errorB.rightA
3、nswer:B2.prismaticchannelconstantnon-uniformflowcurveofqualitativeanalysis,thepositiveslopeofthechannel,whenthechannelisverylong,inlessthannonuniformfloweffectwherethetangentcurveofwaterandN-Nwaterline,reachingauniformflow.A.errorB.rightAnswer:BMolecule3.prismaticchannelconstantnon-uniformflowdi
4、fferentialequations,whenIandJarenotequal,theflowisnonuniformflow.A.errorB.rightAnswer:BThe3.steptoeliminatewaterenergyreferstothekineticenergybeforethejumpsectionandthebacksectionoftheunitweightofwaterratio.A.errorB.rightAnswer:AThe3.seriestubebeforepipeflowisequaltotheflowandafterthepipeandtwop
5、ipesegmentsfromthenode.A.errorB.rightAnswer:B4.whentheflowrateisequaltotherelativevelocity,theinterferencewaveupstreamofthepeakstagnationintheinterferencesource,theinfluenceofdiffusionrangefrominterferencesourcetothedownstream,theflowiscalledslow.A.errorB.rightAnswer:ATosolvethe4.flowmodulus,whe
6、nkeepingotherparametersunchanged,volumemodulusandChezycoefficientisproportionaltothesquareof.A.errorB.rightAnswer:AThe4.channelsarenotallowedtorushflowrockgenerallyaboutintherangeof15-80m/s.A.errorB.rightAnswer:AThe5.rectangularchannelwhenthebesthydraulicsection,thebottomwidthistwotimesthedeptho
7、fthewater.A.errorB.rightAnswer:B5.flowunderwaterflowiscalledpipesubmergeddischargetube.A.errorB.rightAnswer:B5.flowbyslowtransitiontojetwaterjump,butcannotdeterminethepositionofhydraulicjump.A.errorB.rightAnswer:AIn6.shortca
