跌坎型底流消力池的消能作用分析及數(shù)值模擬.pdf

1、I分類號：密級：學號：單位代碼：10407碩士學位論文論文題名論文題名跌坎型底流消力池的消能作用分析及數(shù)值模擬跌坎型底流消力池的消能作用分析及數(shù)值模擬研究方向城市綜合防災減災的技術(shù)研究城市綜合防災減災的技術(shù)研究專業(yè)名稱防災減災工程及防護工程防災減災工程及防護工程研究生姓名堯?qū)W林堯?qū)W林導師姓名、職稱唐敏康唐敏康教授教授20132013年5月2626日江西江西?贛州贛州IIIAbstractAlongwiththeconstantdevel

2、opmentofmodernindustry，rapidlyincreasestothedemofpowerresource.Totheexcessiveuseoffossilfuels，notonlywillcausethisresourcestofacedriesup，butalsoseriouspollutionoftheenvironment.Therefe，hydroelectricenergy，asarenewablecle

3、anenergy，graduallywidelyused.However，ftheproductionofhydroelectricenergyisfacingenergydissipationdisasterreductionofwaterconservancyproject，whichisatechnicalproblemsthatneededtobesolvedimmediately.Toensurethesafestableop

4、erationofthedam，itisnecessarytosolvetheproblemofenergydissipationofflowprocessreleasefloodwatersinthedam.Tosolvethisproblem，itisnecessarytoasuitableenergydissipation.Inthispaper，thesillunderflowstillingbasinisstudied.Usi

5、ngtheFLUENTpretreattheGAMBITtomodel，usethepostprocessingsoftwareTECPLOTtoprocessthesimulationresults.Byanalyzingtheenergydissipationeffectitscausesofdestructionoffallingsillbottomflowdissipationinthestillingbasin，provide

6、guidanceontheprotectionsafeoperationofthestillingbasinreferencefengineeringdesign.Meanwhile，analyzethemaximumimpactcriticalflowvelocityofthestillingpoolboardoffallingsillbottomflowdissipationbyusingmomentumthey.Thestudys

7、howed：(1)Thechangeofangleintothepoolverticalhadasignificantlyeffectonenergydissipationofthestillingbasin.Increasetheangleintothebasin，thestillingbasinboardpressurepeakwillincreasetoo，thepressurepeakwillmovetothesillsurfa

8、cedirectionthebedvelocitypeaksbetween0.1m~0.25m；theverticalimprove，thestillingpoolboardpressurepeakwillalsoincrease，thepressurepeakwilldeparturefromthesillsurfacedirectionthebedvelocitypeaksbetween0.1m~0.3m.(2)Themainsti

9、llingbasindestructionofsillbottomflowdissipationiserosiondamagewaterpressuredamage.themostsevereofthedestructionistheimpactareaofthestillingbasinboard，thenisthebottomrollrecirculationzonethenthewalljet.(3)Thethresholdfmu

10、laofthemaximumbottomvelocityoftheimpactareainthestallingpollofthefallingsillbottomflowdissipationis：，thefmulaoftheflowvelocityneartothebottomoftherecirculationzonecanbededuced：0.152.2max0.1527.6vfgvVx??.Keywds：stillingba