Investigation on Combustion Characteristics and NO Formation of Methane with Swirling and Non-Swirling High Temperature Air-中国Betway体育网页登陆

摘要 Combustioncharacteristicsofmethanejetflamesinanindustrialburnerworkinginhightemperaturecombustionregimewereinvestigatedexperimentallyandnumericallytoclarifytheeffectsofswirlinghightemperatureaironcombustion.Speziale-Sarkar-Gatski(SSG)Reynoldsstressmodel,Eddy-DissipationModel(EDM),DiscreteOrdinatesMethod(DTM)combinedwithWeighted-Sum-of-GreyGasesModel(WSGG)wereemployedforthenumericalsimulation.BothThermal-NOandPrompt-NOmechanismwereconsideredtoevaluatetheNOformation.Temperaturedistribution,NOemissionsbyexperimentandcomputationinswirlingandnon-swirlingpatternsshowcombustioncharacteristicsofmethanejetflamesaretotallydifferent.Non-swirlinghightemperatureairmadehighNOformationwhilesignificantNOprohibitionwereachievedbyswirlinghightemperatureair.Furthermore,velocityfields,dimensionlessmajorspeciesmolefractiondistributionsandThermal-NOmolarreactionrateprofilesbycomputationinterpretaninnerexhaustgasrecirculationformedinthecombustionzoneinswirlingcase.

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Investigation on Combustion Characteristics and NO Formation of Methane with Swirling and Non-Swirling High Temperature Air

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