彎曲溢洪道底流消能的水力模型試驗研究.pdf

1、沈陽農(nóng)業(yè)大學碩士學位論文彎曲溢洪道底流消能的水力模型試驗研究姓名：王立松申請學位級別：碩士專業(yè)：水利水電工程指導教師：郭維東20070606摘要StudyonHydraulicModelTestoftheCurvedSpillway’SUnderflowDissipationAbstractCandidate：WangLisongThespillwayasakindofwaterreleasedstructure，prevalently

2、existsinhydroprojects；andthespillwaychutesaredesignedonplaneintheformofcirculararcbends，usuallyforthelimimtionofgeologysurfaceconfiguration，engineeringstructures，andprojectswholedispositionsDuetothecompoundeffectofinerti

3、acentrifugalfurceandbigslopedownthedifferencesofthebendflow’stransverselevelsareremarkable；thedistributionoftheflowvelocitiesareodds；andwiththeinfluenceofthetorrentshockwave，asymmetryflowsareformedTheasymmetryflows，flowi

4、ngcontinuouslyintotheentranceofthestillingpool，whichwillbetheinflowcondition，willcausetheunderflowenergydissipationfailstoformafullhydraulicjump，andtheeffectofenergydissipationdecreasesAsthedevelopmentofthewaterresourcea

5、ndhydropowerproject，thespillwayunderflowenergydissipationprojcotsunderasymmetricinflowconditionareincreasedyearafteryearButtheresearchonitisnotsomuch，whosedeepnessandextentstillcan’tfilltheneedofprojectpractice；especiall

6、yresearchonspillwayunderflowenergydissipationinflowconditionsisstillrareThustherearemeaningsbothintheoryandinrealitytodevelopresearchonhydrauliccharacteristicsofspilhvayunderflowenergydissipationunderasymmetricconditionC

7、ombiningtherealproject，theresearchisplanedtoadoptmodeltestdatameasuremethodaswellastheoryanalysismethodtodesearchonspillwaychutebendsandhydranliccharacteristicsoftheflowinsidethestiHingp001Themaincontentandresultsareasfo

8、llows：(1)Intheexperiments，severalhydraulicsparametersofthespillwaychutebendswithouttheflowinsulatingwallareobserved，suchasleftandrigtbanksidewalls’watersurfaceprofile，cross‘sectionvelocitywatersurfacesuperelevation，sidew

9、all，andfloorpressure，underthethreeconditionsthatthefloodflowratesOCcursmillenniallycentenniallyandfivedecadally；(2)Intheexperiments，severalhydraulicsparametersofthestillingpoolwithouttheflowinsulatingwallaFgobserved，such

10、astypicalsectionswatersurfaceprofile，crosssectionvelocityandfloorpressure，underthethreeconditionsthatthefloodflowratesOccursmillenniallycentenniallyandfivedecadaUy；andalsothestillingpool’sdampingratioiscomputed；(3)Basing

11、onthephysicalmodeltestdataandconsideringtherealproject，theflowinsulatingwalloptimizingmethodisproposedtoimprovethepatternoftheasymmetricflowsAndtheresultsofthephysicalmodeltestshowthatoptimizingmethodisfeasible，whichalso

12、providesreferencetoengineeringdesign；(4)Usingthephysicalmodeltostudyontheconditionofasymmetricinflow(vizbendflow)andflowsinsideofthestillingpool，theresultsshowthattheflowpatternatthebendsegmentandinthestillingpoolisquite