2016燃燒學(xué)年會集文獻

（430074）Telmail：358107754@G-DSIMULATIONOF BINARYGASDIFFUSIONEXPERIMENTBYMATLABLUCheng- FUPei- YUE PENGZhi- (HuazhongUniversityofScienceandTechnology,StateKeyLaboratoryofCoalWuhanTelbstractBasedonthestateequationoftheactualgasandG-Dformulaofthegasrefractiveindex,usingthedigitalsimulationfunctionofMatlab,amodelofbinarygasdiffusionwasdesignedandconstructed.Interferencefringeofbinarygas(O2-CO2)diffusionin273K,0.1MPacanbecapturedbytheprogrammingandsimulationofMatlab.Byreductiontreatmenttotheinterferencefringe,concentrationfieldofbinarygasdiffusionindifferentlocationandanymomentcanbeobtained,thenthediffusioncoefficientcanbecalculatedaswell.Itestablishedasolidfoundationfortheanalysisofinterferencefringecapturedintheexperimentandcalculationoftheactualgasdiffusioncoefficient.Keywords:lateralshearinterference;binarygasdiffusion;Matlabsimulation;diffusion0幾十年來有了長足的發(fā)展。1976Bochner[4]將雙曝光全息干涉法用于水溶液中蔗糖擴Matlab12632.8nm，激光器發(fā)出的單束光波先經(jīng)過可調(diào)分光器去除雜

圖1剪切系統(tǒng)光路 Matlab模擬模

圖3驗時可以調(diào)試剪切量使原光波與剪切干涉光???x,???,y??波面的錯位差和畸變區(qū)域的折射率引起的相位Θ?x,y???????x,y?????x,y? 2π???

子波面的光程差，??為平行平晶的折射率。擴散初始條件：擴散槽長度8cmc1=0,c2=0.041mol/L;激光波長632.8nm，平行平晶折射率為1.515。? ??前，左側(cè)O2濃度為c1，右側(cè)O2濃度為c2，求解費克定律得到： ?

????=? ??/????=?????圖4擴散開始后5s時獲取的干涉條 圖5擴散開始后10s時獲取的干涉條強的大小。兩個同頻率、同振動方向的點光源Q1、Q2,他們的波函數(shù)分別為：???=??????(?????)???=??????(?????) 當(dāng)兩束光傳播到同一點P時，他們的方程分別是:???(??)=??(??)????(?????())，???(??)=??(??)????(?????( I(P)=???(??)??+???(??)??+???(??)cos?δ(p)?=2???(??)(1+cos(δ))=4??? 可以為每個暗條紋定義pi的奇數(shù)倍的相位，例如-?δ(??,??)=?(??????)??????????+???????? ?

G-D公式n=1+ρ?K[8]，針對二元混合組分的可以展開為:n=1+ρ(∑????)=1+????????+????????=1+?????????+(??0?

=???????????????

體的濃度，Mi代表不同組分氣體的分子質(zhì)量。10sO2O2濃度差絕對值?c隨x如圖8所示：析結(jié) =12Matlabcosδ2π，據(jù)此可求出δ的變化。MichealCVillet,GeorgeRGavalas.MeasurementofConcentration-DenpendentGasDiffusionCoefficcientsinMembranesFromaPsuedo-SteadyStatePermissionRun[J].JournalofMembraneScience,2007,297(1/2):199-205N,Matsunaga,M,Hori,A,Nagashima.MeasurementsoftheMutualDiffusionCoefficientsofGasesbytheTaylorMethod[M].NihonKikaiGakkaiRonbunshuBHen/transactionsoftheJapanSocietyofMechanicalEngineersPartB:JournalofSolutionChemistry,2002.182-193T,R,Marrero,E,A,Mason.GaseousDiffusionCoefficients[M].Rholeisland:BrownUniversity,1966.19-28BochnerN,PipmanJ.Asimplemethodofdeterminingdiffusionconstantsbyholographicinferterometry[J].J.Phys.D,1976,9(13):1825-1841.費繼友,張運宏,張穎,何茂剛.數(shù)字圖像全息干涉法測量液相質(zhì)擴散系數(shù)[J].大連交通大學(xué)學(xué)報,2007,28(04):21-25[J].2010,31(3):369