高壓除鱗噴嘴流場三維數(shù)值模擬與試驗研究.pdf

1、武漢科技大學碩士學位論文高壓除鱗噴嘴流場三維數(shù)值模擬與試驗研究姓名：王毅申請學位級別：碩士專業(yè)：機械電子工程指導教師：曾良才20080420第1I頁武漢科技大學碩士學位論文AbstractInthehotstripproductionprocess，descalinghasbeenanindispensableimportantprocesses，thecurrenttechnologythatdomesticandinternatio

2、naluseishighpressurewaterdescaling，andinthehigh—pressurewaterdescalingsystem，thejetnozzleisthekeycomponents，itsfunctionisnotonlytoconvertthewaterpressurewhichprovidebyhi曲pressurepumpstokineticenergy，butalSOtoensurethatJe

3、thasagoodflowcharacteristiesanddynamicperformanceSothestudyandoptimizationofthenozzlegeometry，establishtherelationshipbetweenthestructuralparametersofjetnozzleanditsjetpropertyhaveimportantmeaningtoincreasetheeffectsofde

4、scalingsystemT【liSpaperUSeSnumericaIsimulationofsimulationanalysisandexperimentalresearchFirstapplyCFDsoftwareFLUENTtosimulatethethreedimensionalflowfieldandanalysesimulationresultoftheinsideandoutsideflowfieldoftheDesca

5、linghigllpressurenozzle，andthendevelopedanozzleexperimentalstage，experimentonthenozzlewhichhasthesamespecificationswiththesimulationmodel。combinethetheoreticalandpractical，studytherelationgshipsbetweentheconstructparamet

6、ersofthenozzlethevariousstatusandtheinternalandexternalflowfieldandietcombat，thespecificresearchcontentiSasfollows：(1)Athreedimensionalmathematicalmodelofinternalflowfieldinhigh—pressuredescalingnozzleWasestablishedbythe

7、GambitsoftwareUsingtheLaminarmodelofferedbyFluentsoftwaretosimulatetheincompressiblesteadystateinternalflowfieldofthenozzles、^，imdifferentconstructionalparameters，andanalysedtheinfluenceofnozzleparameterswhichincludethea

8、stringentanglethediffuseangleanddiameteronthevelocitydistilbution，pressuredistributionandoutletaxialvelocityoftheflowfield(2)Throughthethreedimensionalmodelingandsimulationtothesubsonicgas1iquidtwophaseturbulentexternalf

9、lowfieldofhighpressurewaterdescalingnozzlestudythepressuredistributionandvelocitydistributionafterwatersprayintotheairfromthenozzlediscussthetheimpactthatsystempressureandthetargetdistancetotheJetflowandthescopedistribut

10、ionofcombatforcebysimulationofthevariableparametersthenforecastthebesttargetdistance，provideastrongtheoreticalbasistodeterminethelevelspacingandheightofthenozzle(3)UsingtheHigh—pressureDescalingnozzleperformanceexperimen

11、ttableandtherelatedsoftwarewhichdevelopedbyfluidtransmissionandcontrolInstituteofWuhanUniversityofScienceandTechnology，throughtestingthejetcharacteristicsofthenozzlewhichmodelhasbeenselectedfindtherelationshipofparameter

12、ssuchassystempressure，targetdistance，jetattackforceandietwidthcomparewiththetheoreticalcalculationsandsimulationresultswhichweobtainbefore，validatetheaccuracyofnumericalsimulation，therebyguidingprocessing，selectionandlay