液相质扩散系数的数学描述及实验验证

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1、大连交通大学硕士学位论文液相质扩散系数的数学描述及实验验证姓名：姜伟光申请学位级别：硕士专业：机械电子工程指导教师：费继友20081213AbstractHolographicinterferometerhasbecomeagenerallyacceptedandthemosteffectivemethodtodayinthestudyoftransportphenomena，ithasbeenwidelyappliedtoprecise，qualitativeandquantitativemeasurementofvariousphysicalparametersin

2、fluidssuch嬲velocity,temperature，concentrationanddensityetc．withtheadvantagesofhighsensitivityandaccuracy,largecapacityofinformation,non—instructiveandfeasibletomakeinstantaneousmeasurementandvisualizationinstantaneousmeasurementandvisualizationinoverallinsightintothewholeprocess．Themolec

3、ulardiffusivityinliquidphaseisoneofthemostimportantdynamicalparameterfordescribingmasstransfer．Duetothelackofsatisfactorytheoreticalmodeltopredictliquiddiffiasivity,itnecessitatestoexploitanovelandaccurateexperimentaltechniqueinordertomeettheneedofpracticalutilizationandvalidatetheory．Fi

4、rst，basedonalotofreferences，theauthorsummarizedandcomparedthemeritandshortcomingofthepredecessor．DigitalimageholographicinterferometerisusedtomeaSurethemassdiffusioncoeff]cientoffluid．Second，basedonstudyingtraditionopticalexperimentsystem，adigitalimageholographicinterferometerandanewsyst

5、emofdiffusioncellaredesignedandconstructedforthemeasurementofmassdiffusioncoe伍cient．Thenewdiffusioncellmakestheinterfaceofdiffusionsamplesclearer．ThehoneycombOiltheundersideofdiffusioncellandanewmethodofinjectliquidsaredesigned，anditreducestheconfusionwheninjecting．Accordingtothedesignof

6、diffusioncell，atemperaturecontrolsystemusingcircularwatersisdesigned，anditmakestheexperimentprocessedundertheprecisionof4-0．1K．BasedontheSecondFiekLaw，amathematicalmodelofmassdiffusionwasestablished’byusingtheprincipleofdiffusionprocessinsemi—infiniteplate．Themaximuminterferencefi'ingesp

7、arametersweredeterminedwithexperimentalmethodofLaSerholographicinterference，andthemathematicaldescriptionofliquid-liquidmassdiffusioncoefficientWaSobtained．n坨maximumvalueofinterferencefringesproducedbysucrosesolutionataconcentrationofO．1Omol·f1diffusingtowaterWasmeasureda