蜂窝陶瓷蓄热体格孔壁面应力变化特性的数值研究

:2003-05-27:(2001AA514013):(1970-),,,.:1001-2060(2004)01-0063-031,1,2,1(1.,410083;2.,510070):,-SIMPLEC,,,,,,,;,,,,:;;;;:TK223.3:A1,21,[12]2090,,[1],,,,,,,[37],,,,,,,-SIMPLEC,,21,1,;,33.1,0.5mm,3mm600mm,42,,,,,44151519120041JOURNALOFENGINEERINGFORTHERMALENERGYANDPOWERVol.19,No.1Jan.,20042,,:;;;,,;;,;,3.2,:5f5t+¨(fU)=0(1):5fU5t+¨(fUU)=-¨p+Fs+¨ij(2)ijReynolds:ij=eff(¨U+(¨U)T)-23(¨U)I-23fkI(3)eff=+T,T=Cfk2:5p5t=5fH5t+¨(fUH)-¨((fcp,f+TH)¨H)(4):5scp,sTs5t=¨(s¨Ts)(5):f;U;P;I;Fs;H;H;Tref;cp,f;f;C;Teff;s;cp,s;s;Ts3.3Dirichlet,,,,11/ms-1/K130.07.5970220.04.5970310.03.0970420.04.51170520.04.5770,,1000Pa[1,3],,-800Pa,,,305K,0,10s20s30s40s60s90s4,,,1/200,,;,,,,4.13,462004,,,4.2,(4);,,,,,,344.334,,,,,,5,,,,,,25,6(1),,;,(2),,(3),:[1],.[M].:,1999.[2],,,.[J].,2000,15(4):348-351.[3]OUJIANPING,HSIAOTECHIANG.InvestigationandapplicationofHTACinChina[A].FifthInternationalSymposiumonHighTem2peratureAirCombustionandGasification[C].Yokohama:TokyoInstituteofTechnology,2002.A201-A214.[4],,,.[J].,1999,18(4):28-31.[5],.[J].,1999,21(2):50-53.[6],,,.[J].,2001,22(5):657-660.[7],,.[J].,2003,18(2):132-135.()561,:surfacetheequivalentorientationemissionrateinthezenithangledirectionwillincrease.Keywords:radiationheattransfer,MonteCarlomethod,tube,equivalentorientationemission=TheImpactofGradedCombustionontheAdsorptionofTraceMetalsbySolidAdsorbents[,]/HANJun,XUMing2hou,ZENGHan2cai,etal(NationalKeyLaboratoryofCoalCombustionundertheHuazhongUniversityofScience&Technology,Wuhan,China,PostCode:430074)//Jour2nalofEngineeringforThermalEnergy&Power.-2004,19(1).-5255,58Anexperimentalinvestigationwascarriedoutinanone2dimensionalpulverized2coalfurnacetostudytheimpactofgradedcombustiononthecontrolbyadsorbentsoftheemissionofheavymetals.Throughtheinvestigationitwasfoundthatthegradedcombustionwouldincreasetheconcentrationofheavymetalsinsub2micronparticles,whichisunfavorableforthecontroloftraceheavymetals.Thisinfluenceisespeciallysignificantinthecaseofhighlyvolatileelements,suchascop2perandnickel.Solidadsorbentsplayanadsorptionrolewithrespecttotheemissionofheavymetalspresentincoal.Moreover,theadsorbentshaveaselectivetendencyintheadsorptionofdifferentheavymetals.Inconclusion,theauthorshaveexpoundedthemechanismofadsorptionofheavymetalelementsbytheadsorbents.Suchamechanismisrealizedthroughbothaphysicalandchemicaladsorption,whichcoexistduringaadsorptionprocess.Keywords:traceheavymetal,gradedcombustion,absorbent,coalcombustion=TheInfluenceofaCatalyticReformingReactionontheIgnitionofDieselOilMixedwithWater[,]/WANGChao,GONGJing2song,FUWei2biao(DepartmentofEngineeringMechanics,TsinghuaUniversity,Beijing,China,PostCode:100084)//JournalofEngineeringforThermalEnergy&Power.-2004,19(1).-5658Theimpactofacatalyticreformingreactionontheignitiontemperaturewasinvestigatedduringthefiringofdieseloilmixedwithwater.Thefocusoftheinvestigationisonthechangeofignitiontemperaturewhenthecatalyticreformingre2actiontakesplaceornot.Fromtheresultsofexperimentsitcanbeseenthatthecatalyticreformingreactionhasasignifi2cantinfluenceontheignitionofemulsifieddieseloilandcanmarkedlyreducetheignitiontemperature.Adetailedde2scriptionisgivenoftheexperimentaldevices,testprocessandresultsalongwithcircumstantialexplanationsandanaly2ses.Itisconcludedthatthecatalyticreformingreactioncanlowertheignitiontemperatureoftheemulsifieddieseloil.Furthermore,twoconditionsessentialfortheimplementationofcatalyticreformingarealsoputforward.Keywords:emulsifieddieseloil,catalysis,reformingreaction,ignition=TheImpactofFormingPressureandFurnaceTemperatureontheWeight2lossCharacteristicsofSingle2particleBriquetteCombustion[,]/DONGPeng,JIANGXue2hui,ZHAOGuang2bo(CollegeofEnergyundertheHarbinInstituteofTechnology,Harbin,China,PostCode:150001)//JournalofEngineeringforThermalEnergy&Power.-2004,19(1).-5962Bymakinguseofathermogravimetricanalysismethodtheweight2losscharacteristicsofsingle2particlebriquettecombus2tionwereinvestigated.Asaresult,thelawsgoverningtheimpactofformingpressureandfurnacetemperatureontheweight2losscharacteristicsofsingle2particlebriquettecombustionhavebeendeduced.Incombinationwithatheoreticalanalysisamathematicalmodelwassetup,whichcanreflectthemechanismofthisinfluence.Keywords:briquette,combustion,thermogravimetricanalysis=NumericalStudyoftheStressVariationCharacteristicsattheCellular2holeWall2surfaceofaHoneycombCeramicRegenerator[,]/OUJian2ping,JIANGShao2jian,XIAOZe2qiang(InstituteofEnergy&PowerEngineeringundertheZhongnanUniversity,Changsha,China,PostCode:410083),WUChuang2zhi(GuangzhouEnergySourceResearchInstituteundertheChineseAcademyofSciences,Guangzhou,China,PostCode:510070)//JournalofEngineeringforThermalEnergy&Power.-2004,19(1).-63656012004Theoperatingprincipleandcausesofdamageofahoneycombceramicregeneratorduringhigh2temperatureaircombustionaredescribed.ByusinganalgebraicReynolds2stressmodelandarevisedspeed2pressurecoupledalgorithmSIMPLECacouplingoffluidflowandheatexchangeprocessintheregeneratorwasimplemented.Withthehelpofafinite2elementanalysismethodanumericalstudyofthestressvariationlawatthecellular2hol