高壓除鱗噴嘴流場(chǎng)三維數(shù)值模擬與試驗(yàn)研究.pdf

1、武漢科技大學(xué)碩士學(xué)位論文高壓除鱗噴嘴流場(chǎng)三維數(shù)值模擬與試驗(yàn)研究姓名：王毅申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：機(jī)械電子工程指導(dǎo)教師：曾良才20080420第1I頁(yè)武漢科技大學(xué)碩士學(xué)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