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热力发电  2014 

concentrationcorrectionbasedacoustictomographyoftemperatureandflowinafurnace

, PP. 42-46

Keywords: boiler,furnace,temperaturefield,velocityfield,acousticpyrometry,phasedifference,binaryfrequency,temperaturemeasuringsystem

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Abstract:

theoreticalandexperimentalstudiesonsimultaneousreconstructionoftemperatureandflowinaboilerfurnacewerecarriedout.onthebasisofthetranscendentalinformationofthegasmixtures'concentrationdistributioninthecombustionchamber,acorrectionmethodwasproposedtoimprovetheaccuracyoftemperaturereconstruction.numericalsimulationwasperformedintwocases,whichshowsgoodresultsofthereconstructedtemperatureandvelocity.theresultshowsthemodifiedalgorithmcanreducethereconstructionerroreffectivelyandobtainamoreaccuratereconstructionresult.moreover,anacousticmeasuringsystemhasbeenestablishedandthevalidityandaccuracyofthissystemhavebeenproved.

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