基于CFD技术的喷气织机主喷嘴内部流场的分析

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1、西安工程大学学报JournalofXi’anPolytechnicUnivemity第23卷第2期(总96期)2009年4月V01．23，No．2(Sum．No．96)ArticleID：1671-850X(2009)02-01884)8Analysisofflowfieldinsideofmainnozzle。air-jetalrletloomloqbasedbaseaonOnCFDinLIANGHai-shun，WANGGuan—chao，SHENDan—feng，YANGKun，LIUFeng，LIJun—ning(SchoolofMechanical&Electr

2、icalEngineering，Xi’蛳PolytechnicUniversity，Xi’an710048，China)Abstract：Basedonthecurrentanalysisstatusofmainnozzleinair-jetloom，theideaofCFDapplica-tionareputforward．ThesoftwareofNUMECAiSappliedtOsimulatetheflowinsideofthemainnozzle．Theairnowvelocitydistributionindi妇ferentcm褐．sectionofthrea

3、dtubei8alsorevealed．andtheaxialdynamicpressureandMachnumberofaircurrentinsideofthemainnozzleareanalyzed．TheresultshowsthatthemethodofnumericalsimulationappliedtOresearchflowfieldinsideofthemainnozzlesisconvenient。rapidandhigh—accuracy．Keywords：air-jetloom；mainnozzle；flowfield；numericalsim

4、ulationCLCnumber：’Is103．1lDocumentcode：A0IntroductionThemainnozzleisthekeypartoftheair-jetloom，whoseworkingperformanceaffectsnormaloperationofloom，productquantityoffabricandairconsumptiondirectly．Soitisregarded船the“heart”ofair-jetloombymakersandusersoflooms．Themajorfunctionofjetairnowfrom

5、themainnozzleistOaccelerateweft．Theair-flowkineticenergytransportstOweftbyitshi曲speedandstability，andtheairflowaccelerateswefttOtheveloci-tythatadaptstOtIleloomspeedandthetimeofweftinsertion．Becausetheweftspeedandthestabilityofweftflight8xeimportantonweftinsertionqualityandefficiencyofloo

6、ms，SOanalyzsisoftheflowfieldinsideofthemainnozzlesonincreasingweftspeedandstabilityofair-jetloomhaveverypositivemeaning⋯．Nowthemanufactureofdomesticnozzlesremaingattheinitialofstagemappingandimitation．Sofar，thedatarelativetOflowfieldinsideofthemainnozzlesiSmainlyobtainedbyexperiment．Dueto

7、theietairflowchannelinsideofthemainnozzlesistoonarrowtoassemblesensorsandthesensorsmayalsointerfereflowfieldtoacertainextent，theprecisionofthemeasurementdataCanbeaffected．BecauseofthedifficultytOmeasureReceiveddate：2008—11-07FoundationItem：SupportedbytheofScienceand