非牛頓流體中氣泡生成的研究.pdf

1、⑨天洋大薯碩士學位論文一0●■●0●爿置■■疆■■0■■■_學科專業(yè)：業(yè)主王理作者姓名：堇窒五指導教師：旦童盤塑撞壬洼女學研窯牛院2006年1月ABSTRACTThebubblebehaviorinnonNewtonianfluidplaysakeyroleinsuchdiversefields∞wastewatertreatment，petroleumprocessing，fermentation，polymerdevolatiliz

2、ation，compositesprocessing，boiling；plasticfoamprocessingandenvironmentremediationPolyacrylamide(PAM)iswidelyappliedinindustrialprocessesandbiomedicinematerial；itsfoundationalcharacteristichasbeensufficientlyunderstoodInt

3、hispaperFAMaqueoussolutionwasusedtostudytbebehaviorofbubbleformation∞nonNewtonianfluid，Densitysurfacetensionandrheologiealcharacteristicsaretheessentialpropertiesofthenon—NewtonianfluidPyenometarsurfacetensiometorandrheo

4、meterwereadoptedrespectivelytomeasurethedensitysurfacetensionandrheologiealcharacteristicsofO25％(wt)，050％(wt)，075％(叭)PAMaqueoussolutionsat29315KTheparametersofequationswegefiredintermsoftheexperimentaldataAlasermeasureme

5、ntsystemforstudyingthebehaviorofbubbleformationwasestablishedThebubbleformationinPAMaqneoussolutionsat29315KwasmeasurcdbytheuseofaCCDcameracomputerpicturecollectionandtreatmenttechniqueTheeffectsofrheologicalcharacterist

6、ics，orificediameterchambervolumeandgasflowrateondetachmentvolumeofbubblewereinvestigatedrespectivelyAmodelofbubbleformationwhichconsistsoftheradialexpansionequationandthevertiealascensionequationofbubbleinterfaceundercon

7、stantfiowrateconditions，wasdevelopedcombiningcontinuityequation，motionequationsofhydromechanicswithrheologicalequationofnonNewtonianfluidThemodelwagemployedtocalculatethebubblesizeanddetachmentvolumeduringitsformationind

8、ifferentconcentrationPAMaqueoussolutions，orificediametersandchambervolumesTheeffectsofrheologicalcharacteristics，orificediameterchambervolumeandgasflowrateonbubbleformationwerediscussedTheresultsshowthatrheoIogicalcharac