不考虑傅里叶效应下的热湿耦合传递——Non-Fourier-effect-in-the-presence-of-coupled-heat-and-moisture-transfer_2010_International-Journal-of-Heat-and-Mass-Transfer

《不考虑傅里叶效应下的热湿耦合传递——Non-Fourier-effect-in-the-presence-of-coupled-heat-and-moisture-transfer_2010_International-Journal-of-Heat-and-Mass-Transfer》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、InternationalJournalofHeatandMassTransfer53(2010)3080–3087ContentslistsavailableatScienceDirectInternationalJournalofHeatandMassTransferjournalhomepage:www.elsevier.com/locate/ijhmtNon-FouriereffectinthepresenceofcoupledheatandmoisturetransferS.Andarwa,H.Basirat

2、Tabrizi*DepartmentofMechanicalEngineering,AmirkabirUniversityofTechnology,P.O.Box15875-4413,Tehran,IranarticleinfoabstractArticlehistory:Theobjectiveofthispaperistostudyheatandmasstransfercouplingundernon-Fouriereffect.Thenon-Received15June2009Fouriermodelisappl

3、iedonLuikov’sequations.ThegovernedequationiscalledLuikov’sCorrected(LC)Receivedinrevisedform12March2010equationsandissolvedbyhybridanalytical–numericalmethod.HeatandmasspropagationinLCfieldAccepted12March2010isshowntobewavelike;so,wavefrontspeedisobtained.Applyin

4、gnon-FouriermodelinsteadofFourier’sAvailableonline13April2010lawsensitizesLuikov’sequationstorespondinfasttransientprocess.Further,theeffectofheatandmasstransfercouplingoninterpretingnon-Fourieraffectsisinvestigated.ItisseenthatthepresenceofheatKeywords:andmasst

5、ransfercouplingreduceswavefrontspeedwithrespecttouncouplednon-Fourierheattransfer.HeatandmasstransferÓ2010ElsevierLtd.Allrightsreserved.Luikov’sequationsWavefrontspeedRelaxationtimeLaplacetransformModeling1.Introductionlocalthermodynamicequilibriumconditionovers

6、paceinfasttran-sientprocesswheretimescaleofprocessisontheorderofs(seeInmanypracticalproblemsclassicalFourier’sequationofheat[7]).Inotherwords,itismacroscopicinspacebutmicroscopicinconductioncanbeused,althoughthismodelconcludestheinfi-time[1].nitelyspeedofheatprop

7、agation.However,insituationsdealingTherelaxationtimesisresponsibleforthewavenatureofnon-withheatflowinextremelyshortperiodsoftime,veryhightem-Fourierheatconductionequations;itrelatestothethermalwaveperaturegradient,verylowtemperaturesapproachingabsolutespeedby[1]

8、:zero,orformicroscaleconditionsthewavenatureofheatpropaga-aqtionbecomesdominant.Thesesituationstakeplaceinsomes¼ð2Þv2importantpracticalengineeringproblemssuchasrapidm