河網潰堤與潰堤波的一、二維耦合數值模擬

1、河海大學碩士學位論文河網潰堤與潰堤波的一、二維耦合數值模擬姓名：強娟申請學位級別：碩士專業(yè)：水力學及河流動力學指導教師：汪德爟20070301ABSTRACTNumericalsimulationforcouplingofone—dimensionalrivernetworkAndtwo—dimensionaldikebreakwavesOncethereservoirisbreached，thedikebreaklongwavesca

2、usegreatdamagetothepeople’SlifemadpropertywholivesinthedownriverareaespeciallyintheYangziRiverdownriverwhereithasthethickestrivernetworkThedensityofthenetworkevencomesto614～617％：，andtherearelotsoflow—lyingfieldsinthenetw

3、orkareaTheprotectedbankisusedtoprotecttheareaThepumpingstationwilldrainthewaterfromthelow—lyingfieldtotheoutsideriverthewatersurfaceintheoutsideriverishigherthanitisinthelowlyingfieldSoitbecomesahotspottoforecasttheresul

4、tsbroughtbythepast—areas’dike—breakwavesInthepaperthehydraulicmodelofcoupling1Dfivernetworkand2Ddikebreakwavesreallyrealizesthetransitionfrom1Dcalculationwaterareato2Dwaterarea，anditshowstheprocessofriverdikebreaking，the

5、velocityvariationofthebreachflowandtheflowcharacteristicofdiffraction，reflectionanddeformationduringthepropagationofdikebreakwavesThesimulationcanrealisticallyshowtheburstprocessofthedikeItisconcludethatthemodelcanpredic

6、tthesubmergeprocessandareaeffectivelyprovideacademicbaseforestablishmentoffloodforecastsystemandithasscientificdecisionreferenceandpracticalsignificanceforfloodwamingservice，andalsoprovidesscientificbasisfortheanalysisan