混流式水輪機轉(zhuǎn)輪結(jié)構(gòu)及優(yōu)化設(shè)計.pdf

1、南昌大學碩士學位論文混流式水輪機轉(zhuǎn)輪結(jié)構(gòu)及優(yōu)化設(shè)計姓名：何芳申請學位級別：碩士專業(yè)：機械工程指導教師：江雄心李玉平20080601ABSTRACTABSTRACTForFrancisturbine，therearemanyfactorsthatmayaffecttheefficiencyofturbine，forexample，spiralcase，stayvane，wicketgate，runner，drafttubeandflowp

2、artsinsidehydraulicpassage，allcalldoeffectontheefficiencyofturbine；andalsotherunneristhenucleusoftheturbineandhasadecidedinfluenceonturbineefficiencySOtheoptimizationdesigntotherunnerofturbineisthemostimportantpartinturb

3、inedesignInrecenttenyears，atechnicaltoolofflowmechanicsCFD(ComputationalFluidDynamics)hasbeenwidelyusedinthefieldoffluidmachinedesign，especiallyinthefieldoftheoptimizationdesignoffluidmachine，andithasbeenamainmeansinturb

4、inedesignWeCandevelopexcellentturbinewithmuchbetterabilitiesbythecombinationofCFXmethodandmodeltesttechnology，whichhasgreatlypromotedthedevelopmentofturbinetechnique，shortenedtheperiodofturbinedesign，reducedcostItcanalso

5、predictabilitiesofturbineaccurately，andimprovedthequalityofturbinehydraulicdesigntechnologyremarkablyPapersofANSYSCFX110simulationsoftwaretotheturbinerunnerleavesthethree—dimensionalflowandenergydistributionofnumericalsi

6、mulation，therepairoftheleavesaftertheperformanceanalysis，carriesontheanalysisaftertherepairingleafblade’Seachperformanceindex，obtainstheleafbladethicknessthroughtheoptimizeddesigntobebestchangeforreductionofvibrationofth

7、erunner、spatialeclipse，vortexrope，aspectandSOoncontrolstabilityproposesthenewimprovementmethodPapersmaincontentsare1，analysisofthevibrationcausedhydraulicturbinereasons，andtherunnerthroughtheoptimaldesignteduceandcontrol

8、thehydraulicvibration，reachoptimalworkingconditionsintheturbinewhenthebestoperatingefficiency；2，Bladerunnerreducethethickness，theapplicationoftechnologyCFXnumericalmodel，andoptimizethedesignofturbinebladesResearchshowsth

9、atwillbebasedonthefiniteelementmethodstructuralanalysisofsimulationtechnologyappliedtoturbinerunnerstructuraloptimizationanalysis，Canreducethedevelopmentcycleandreducedevelopmentcosts，haveimportantTheoreticalandpractical