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1、附录附录一:外文原文SensitivityAnalysisoftheCCHE1DChannelNetworkModelWeimingWu(1),DalmoA.Vieira(2),AbdulKhan(3)andSamS.Y.Wang(4)(1),(2),(3)and(4),NationalCenterforComputationalHydroscienceandEngineering,SchoolofEngineering,TheUniversityofMississippi,MS38677;PH(662)915-5
2、673/(662)915-7788;FAX(662)915-7796;E-mail:wuwm@ncche.olemiss.eduAbstractTheCCHE1Dmodelwasdesignedtosimulatelong-termflowandsedimenttransportinchannelnetworkstosupporttheDECproject.Ituseseitherthedynamicwaveorthediffusivewavemodeltocomputeunsteadyflowsinchannel
3、networkswithcompoundcrosssections,takingintoaccounttheeffectsofin-streamhydraulicstructures,suchasculverts,weirs,dropstructures,andbridgecrossings.Itsimulatesnon-uniformsedimenttransportusinganon-equilibriumapproach,andcalculatesbanktoeerosionandmassfailuredue
4、tochannelincision.TheCCHE1Dmodeldecouplestheflowandsedimenttransportcalculationsbutcouplesthecalculationsofnon-uniformsedimenttransport,bedchangesandbedmaterialsortinginordertoenhancethenumericalstabilityofthemodel.Inthispaper,thesensitivityofCCHE1Dtoparameter
5、ssuchasthenon-equilibriumadaptationlengthofsedimenttransportandthemixinglayerthicknessisevaluatedincasesofchannelaggradationanddegradationinlaboratoryflumesaswellasinanaturalchannelnetwork.Inthecaseofchanneldegradation,thesimulatedscourprocessisnotsensitivetov
6、ariationinvaluesofthenon-equilibriumadaptationlength,butthedeterminationofthemixinglayerthicknessisimportanttothecomputationsoftheequilibriumscourdepthandofthebed-materialsizedistributionatthearmoringlayer.Thesimulatedbedprofilesinthecaseofchannelaggradationan
7、dthecalculatedsedimentyieldinthecaseofnaturalchannelnetworkareinsensitivetotheprescriptionofboththenon-equilibriumadaptationlengthandthemixinglayerthickness.TheCCHE1Dmodelcanprovidereliableresultsevenwhenthesetwoparametersaregivenawiderangeofvalues.Introductio
8、nTheCCHE1Dmodelwasdesignedtosimulatelong-termflowandsedimenttransportinchannelnetworkstosupporttheDemonstrationErosionControl(DEC)project,whichisaninteragencycooperativeeffortamong