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双进口两级双吸离心泵过渡流道压力脉动特性研究.docx

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双进口两级双吸离心泵过渡流道压力脉动特性研究为题目，写不少于1200的论文 Abstract Centrifugalpumpsarecommonlyusedforawiderangeofindustrialapplications.Indualinlettwo-stagecentrifugalpumps,thepressurepulsationatthetransitionsectionoftheimpellerisanimportantparameterthataffectstheperformanceofthepump.Inthispaper,weinvestigatethepressurepulsationcharacteristicsofadualinlettwo-stagecentrifugalpumpwithatransitionsectionintheimpellerusingcomputationalfluiddynamics(CFD)simulations. Thesimulationresultsshowthatthepressurepulsationinthetransitionsectionissignificantlyaffectedbytheoperatingconditions,includingtheflowrateandimpellerrotationalspeed.Thepressurepulsationamplitudesarehigheratlowflowratesandhigherrotationalspeeds.Thepulsationfrequencyisalsoaffectedbytheoperatingconditionsandthegeometryofthetransitionsection.Theresultssuggestthatthedesignofthetransitionsectioncanbeoptimizedtominimizethepressurepulsation. Introduction Centrifugalpumpsarewidelyusedinvariousindustriesforfluidtransportation,andtheirperformancecharacteristicsarecrucialfortheefficientoperationofthepumpingsystem.Dualinlettwo-stagecentrifugalpumpshavetheadvantagesofhighefficiency,lowpowerconsumption,andlownoise,andtheyarecommonlyusedinwatersupplysystems,irrigation,andotherindustrialapplications.Inthesepumps,theflowenterstheimpellerfromboththefrontandbacksides,andthetransitionsectionbetweenthetwoinletsaffectstheflowfieldandthepressurepulsationcharacteristicsofthepump. Thepressurepulsationincentrifugalpumpscancausevibration,noise,anddamagetothepumpandthepipingsystem.Thepressurepulsationatthetransitionsectionoftheimpellerindualinlettwo-stagecentrifugalpumpsisanimportantparameterthataffectsthepumpperformanceandreliability.Thepressurepulsationamplitude,frequency,andtheirdistributionalongtheflowpathareimportantfactorsthatneedtobeconsideredinthepumpdesignandoperation. Inthispaper,weinvestigatethepressurepulsationcharacteristicsofadualinlettwo-stagecentrifugalpumpwithatransitionsectionintheimpellerusingcomputationalfluiddynamics(CFD)simulations.Theo