塑料井泵新型轴向导叶的设计及内流场研究

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1、万方数据江苏大学硕士学位论文axialguidevanepresentstheminimalinnerenergyloss．(6)Comparisonshowsthatpressurefluctuationsignalsmainlycomefromtheimpellers，andintheprocessoftransmittingtotheguidevanesthepulsatingsignalshowsanaRenuatedtrend．Frominlettooutlet，thepressurepulsationampli

2、tudeforeachguidevaneshowsadownwardtrend．Thepressurepulsationatthejunctionofimpellerandguidevanesismainlycausedbyrotor—statorinteraction，andtherotatingfrequencyinthisregionplaysdominatingeffectsonthepressurepulsation．Themoststablepressurepulsationispresentedinspace

3、guidevanes，followedbyradialguidevanes．Andinternalpressurepulsationinstabilitycanbedetectedinaxialguidevanesduetothespecialbladestructure．Thefirstspaceguidevaneshowsthestrongestpressureconversioncapability，whilethesecondaryaxialguidevanepresentsthestrongestpressure

4、conversion．(7)Theperformancecharacteristiccurvesofthewellpumpobtainedbyexperimentsaresimilartothenumericalcalculationresults．Thenewaxialguidevanepresentsrelativelyhighperformanceundertheworkingconditionswithslimpathandmassflow，showingthatthenewaxialguidevanepropos

5、edinthepaperissuitablefortheconditionswithlargeflowratepumps．Butcomparedwithspaceguidevanes，whichhavebeendesignedwithconventionalmethod，thenewaxialguidevanesalsohaveroomforimprovement．Keywords：plasticwellpumps，newaxialguidevane，numericalsimulation，performancecompa

6、rison，pressurepulsation～万方数据江苏大学硕士学位论文目录第一章绪论⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．11．1研究背景及意义⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．11．2我国深井泵发展史⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯一41．3国内外研究现状⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯一61．3．1国外研究现状⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯61．3．2国内研究现状⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．71．4本文主要研究内容⋯⋯⋯

7、⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．8第二章导叶设计理论及方法⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯102．1导叶设计理论概述⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯102．2新型轴向导叶设计⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯132．3对比导叶设计⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯182．3．1径向导叶设计⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．182．3．2空间导叶设计⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．192．4本章小结⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯

8、⋯⋯⋯．20第三章定常数值模拟及流场分析⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯223．1CFD理论基础知识⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯223．2计算模型建立⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯223．3模型的网格划分⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯243．4边界