水平撞擊流干燥器撞擊過程實驗研究.pdf

1、分類號UDC：密級：東南大學(xué)碩士學(xué)位論文水平撞擊流干燥器撞擊過程實驗研究龍海軍指導(dǎo)教師姓名(職務(wù)、職稱)鏖維堊教握鄞塞佳副熬援申請學(xué)位級別亟專業(yè)名稱熱能王捏論文提交日期遙：!i!叢論文答辯目期學(xué)位授予單位和日期答辯委員會主席評閱人年月日AbstractImpin西ngstreamsdryingdevelopedrecentlyisane、vtheoryandanewtechnologyindryingregionItcallhelpim

2、provingtheefficiencyofdryinggreatlyThismakesithaveallexcitedfutureondryingNowtherearemanyresearchersandscientistswhohaveputtheirattentionstoimpingingstreamsHowevertheresearchiSnotenoulghTherearestillmanyproblemsneededtob

3、estudiedThemostimportantIStheuseoflmpmgmgstreamsondryingInthethesis，themicrotheoryofheatandmasstranSferandwhyimpingingstreamscanimprovetheemciencyofheatandmasstranSferiSfirstlyexplainedAllthesemakedevelopingimpingingstre

4、amsisverynecessary’theparameterwhichheatandmasstransferdependsOniStherelativevelocityofairmaterialSointhethesis，theflowfieldisanalyzedusingtheory，issimulatedwithcomputerusingthesoftFluentandisstudiedbytheauthorconducting

5、experimentTheflowfieldconsistsofthevelocitydistributionofairandmaterialintheacceleratingtubesandtheimpingingregionInthetheoryanalysis，themathematicmodelsofairvelocitydistributionandofsingleparticlevelocitydistributionhav

6、ebeensetuprespectivelyThemathematicmodelofairVelocitvdistributioniscommon；itcarlbeusedinmanycases，TheairvelocitydistributionissimulatedwithSIMPLE(SemiImplicitMethodforPressureLinkedEquations)algorithmbyusingFluentsoftThi

7、ssoftiSoneofthebestCFDsoftwhicha∞usedextensivelyinrecentyearsSIMPLEalgorithmisacceptedearlyasaalgorithmwhichsuitableforPressure—LinkedEquationsInexperimentsthemostadvancedequipmentsPⅣandCCDwhichareusedtOmeasurethevelocit

8、yandtheprocessofparticleflowingareadoptedTheC01TIITIOnpointofthetWOequipmentsisthattheymeasurethevelocitythroughopticsimaging，don’tdisturbthe日uidfieldPIVcarlretiecttheinstantaneousvelocitydistribution，CCDcanreflectthepro

9、cessofmaterialparticleflowingAttheendofthethesisthevelocitydistributioniSgivenThedepthofmmerialparticleflo、mngintotheacceleratingtubeandtheresidencetimearemadeout，tOOTheparametersCaBprovidethedryerdesignerKEYWORDS：Imping