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1、圖書分類號..Y9014780密級一博士學(xué)位論文基壬絲曼趑射的絲整邃廑塑粒廑指導(dǎo)教師凰邀昌熬攫申請學(xué)位級別.盟±掌僮專業(yè)名稱到選讓量撞苤壁健器論文提交日期論文答辯日期墊Q§年§月!!日2005——年!!月!!一日論文評閱人猛泣遍:i謝蓽鼬二迸盟正』啦趟幽.為袁帝.稼善抱答辯委員會主席查e!蘭!蠡.一于10微米,在一定濃度范圍測試的技術(shù)手段、方法是可行的。第六章給出了微粒粒度測試的技術(shù)方案及散射系數(shù)與粒度的汁算曲線與擬采用的標(biāo)定方案;微粒粒度的實(shí)驗(yàn)室測試數(shù)據(jù)以及首次提出以斜率標(biāo)定粒度的方法,將在某大型國有企業(yè)的現(xiàn)
2、場實(shí)驗(yàn)及測試。論文的創(chuàng)新性如下:1理論上分析計(jì)算了微粒散射光強(qiáng)與粒度的關(guān)系,確定了實(shí)驗(yàn)技術(shù)方案,設(shè)計(jì)了測試系統(tǒng),實(shí)驗(yàn)結(jié)果證實(shí)了理論計(jì)算的正確性,并首次提出以前向散射光強(qiáng)與微粒濃度線性關(guān)系的斜率來標(biāo)定粒度。2設(shè)計(jì)了在實(shí)際煙道中測試的技術(shù)方案,采用角隅棱鏡增大光程、降低了接收器的瞄準(zhǔn)困難。3采用光纖傳感器,根據(jù)理論計(jì)算及模擬,確定了后向散射對微粒濃度測試方案,實(shí)驗(yàn)結(jié)果驗(yàn)證了理論計(jì)算的正確性和實(shí)踐應(yīng)用的可行性。4全面研究了Mie散射理論,并對散射系數(shù)、效率因子進(jìn)行了計(jì)算模擬。關(guān)鍵詞:微粒,濃度,粒度,Mie散射,光纖
3、傳感器TheoreticalandExperimentalStudyonParticulateDensityandGranularityMeasurementBasedoilMieScatteringTheoryAbstractParticulatemeasurementisoneofmulti.disciplineandmulti-fieldtechnologies.Itisknownthatmostsolidsubstancesexistinthefclrnlofparticulateincludingth
4、enaturesubstancessuchassoil,silt,atmospheredust.flourofgrainandsucrose,aswellasartificialsubstancessuchasmwdercoal,catalyst,cement,chemicalfertilizer,pigmentanddrug.Therefore,thetechnologyrelatedtomeasuringparticulateandltsapplicationhasawideapplicationinman
5、yindustrialfieldssuchasenvironmentalprotection,petrochemicals,medicine,COal,ocean,waterconservancy,metallurgy,buildingmaterials,geologyandfoodstuff,etc.Althoue,htherearevariousprinciplestotestparticulatedensityandgranularityatpresent,theopticalmethodhastheme
6、aningoffurtherresearchforitspeculiarfeatures.Themaincontentsareasfollows:Inchapter2theauthoranalyzesthetypicalcharacteristicsoftheinteractionbetweenparticulateandoptical,reviewssomerelatedliteraturesaboutparticulatemeasurement,andcomparesthecommonmeasuringte
7、chniquesandmethodswiththetypicalones.ThelaserparticulatemeasuringmethodbasedonMieScatteringTheoryisintroduced.too.In廿1echapter3somerelatedphysicalconcepts,formulasandmeaningsinMieScatteringTheoryaresummarizedandillustrated,whichwilllayasolidfoundationforfurt
8、hercalculation.Togetthegranularityofparticulatebytestingtheintensityofscatteringlight,itisnecessarytoknowthetheoryofparticulatescattering,i.e.comparingthescatteringfigure.Accordingtotwofunctions