轴流式血泵流场CFD仿真.pdf

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1、机床与液压Mar．2014HydromechatronicsEngineeringV01．42No．6DOI：10．3969／j．issn．1001-3881．2014．06．002FlowfieldCFDanalysisofaxialflowbloodpumpXiongXIE．Jian．pingTAN，StateKeyLaboratoryofHighPerformanceComplexManufacturing，CentralSouthUnivemity，Changsha410083，China；SchoolofMechanica

2、landElectricalEngineering，CentralSouthUniversity，Changsha410083，ChinaAbstract：Inthedevelopmentofaxialflowbloodpump，thearterialpartialflowfieldmayproduceanareawithveryIowflowshearrate．sOitisnecessarytoconsiderthenon-Newtoniancharac-teristicsofbloodfluid．Inthispaper．amod

3、eIofaxialflowbloodpumpwasestablished．andflowandrotate．speed’simpactsontheinletandoutletoftheflowfieldinthebloodpumpwereana-lyzedthroughComputationalFluidDynamics(CFD)simulation，aswelastheinfluenceoftheguidevaneontheflowfield．Bythepumpwaterexperimentofthedesignedbloodpu

4、mp，itsout-putflowandpressureweremeasured；theresultsshowthatthedesignedbloodpumpisconsist—entontheJawwiththesimulation．Keywords：Axialflowbloodpump，Non—Newtonianfluid，Flowfielddistribution，CFDsimulationDuetothecomplexityoftherheologicalproper—ingintheC1E3typecentrifugalb

5、loodpumptoen—tiesofnon．Newtonianfluid，thebloodwasalwaysre．surethemainwaytoavoidtheblooddamagebyEis—gamedastheNewtonianfluidinthedevelopmentandtrup[8]whoworkedintheBaylorCollegeofMedi-designoftherotarybloodpumpathomeandabroadcine．BasedontheCFDtechnology。theSIMPLE．sofar『

6、1—3]．Generally，theNewtonianfluidwasPressurecouplingalgorithmwasusedtoachievetheusedforthehypothesisofbloodinthecurrentstudyvisualizationofthepressurefield，velocityfieldandofthebloodfluiddynamics．However。fewreportsfo．shearstressdistributioninthestraightbladebloodcusedon

7、thefluidcharacteristicsofthenon．Newtoni．．pumpbyQunfangWang[9-10]．Thefluidfieldinanfluidintherotarybloodpump[4—5]．thebladepassageofacertaintypeofbloodpumpwasTheCFDsoftwarewasusedtoanalyzethefluidnumericalsimulatedbycomputer—aidedsolvingthedynamiccharacteristicsoffivedif

8、ferentaxia1．flowthreedimensionalNavier．．StokesequationsbyBaon．-pumpsbyKimeta1．[6]，thevelocityfielddistribu—ingZhang[1