跌坎型底流消力池的消能作用分析及數(shù)值模擬

1、I分類號(hào)：密級(jí)：學(xué)號(hào)：單位代碼：10407碩士學(xué)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(zāi)減災(zāi)的技術(shù)研究城市綜合防災(zāi)減災(zāi)的技術(shù)研究專業(yè)名稱防災(zāi)減災(zāi)工程及防護(hù)工程防災(zāi)減災(zāi)工程及防護(hù)工程研究生姓名堯?qū)W林堯?qū)W林導(dǎo)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