基于Mie理論和K-K色散關系的顆粒材料輻射參數(shù)確定.pdf

1、南京航空航天大學碩士學位論文基于Mie理論和KK色散關系的顆粒材料輻射參數(shù)確定姓名：王興凱申請學位級別：碩士專業(yè)：工程熱物理指導教師：常海萍20071201南京航空航天大學碩士學位論文IIIAbstractThecomplexrefractiveindexofparticlematerialsisacriticalparameterintheresearchontheradiationacterofparticle.Alsoitisdi

2、fficultinthisresearchareaofradiationparameters.Fromtherecentresearchesthemethodwhichisusedinstudyonthecomplexrefractiveindexofparticlematerialistotallydifferentfromtheoneusedonbulkfilmmaterial.Themethodwhichiswidelyusedi

3、nthisareaistogetthetransmittancespectrumofparticlematerialbyexperimentchooseagoodinversionmodeltofitthisspectrum.Ifthecalculationspectrumcurvetheexperimentaloneareperfectlyfitteditisthecomplexrefractiveindexoftheparticle

4、material.Thispaperusedtheelectrostaticlevitationtheytomaketheparticlessuspendintheairthenthetransmittancespectrumcouldbeeasilymeasured.BothofthetheeticalexperimentalanalysesareshowedthattheextraDCelectrostaticfieldisnoef

5、fectontheradiationmeasurement.Thethicknessconcentrationoftheparticlemediacouldbechangedbychoosingdifferentapertureoftwotopplatesthenumberofpowderejectionrespectively.Theexperimentalresultshowedthatthethicknessofthepartic

6、lemediacouldstronglyincreasetheextinctionratio.Howeverduetothelimitationofgestheparticlecarriedthenumberofpowderejectionisnoobviousinfluenceontheextinctionratio.IntheythispaperusedaninversionmethodbasedonMietheyKramersKr

7、onigdispersionrelation.ThetransmittancespectrumobtainedinexperimentthelognmalsizedistributionfunctionofparticlematerialobtainedbyMarlvernparticlesizemeasurementinstrumentcurvefitsoftwarearetwoinputparametersbychangingthe

8、independentvariationspL()n∞Ftofittheexperimentalcurveintheprogramthecomplexrefractiveindexspectracouldbeobtain.Theresultshowedthat(1)Whenthesearchingareaisconstrainedtheinversionprogramwouldnotappearseveralsolutions.(2)T