资源描述：
《Analysis of dispersion effects and non-thermal equilibrium》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。
1、hr.J.HealMossTrmsfrr.Vol.37,No.6,pp.939-954,1994Copynyht01994ElsevierScienceLtdPergamonPnntedinGreatBritain.Allrightsreserved0017-9310194$6.00+0.000017-9310(93)EOO19-DAnalysisofdispersioneffectsandnon-thermalequilibrium,non-Darcian,variableporosityincompr
2、essibleflowthroughporousmediaA.AMIRIandK.VAFAIDepartmentofMechanicalEngineering,TheOhioStateUniversity,Columbus,OH43210,U.S.A.(Received6Mq1993andinfinal.formI1October1993)Abstract-Thepresentworkinvolvesthenumericalsimulationofforcedconvectiveincompressibl
3、eflowthroughporousmedia,andtheassociatedtransportprocesses.Afullgeneralmodelforthemomentumequationwasemployed.Themathematicalmodelforenergytransportwasbasedonthetwo-phaseequationmodelwhichassumesnolocalthermalequilibriumbetweenthefluidandthesolidphases,Th
4、einvestigationaimedatacomprehensiveanalysisoftheinfluenceofavarietyofeffectssuchastheinertialeffects,boundaryeffects,porosityvariationeffects,thermaldispersioneffects,validityoflocalthermalequilibriumassumptionandtwodimensionalityeffectsonthetransportproc
5、essesinporousmedia.Theresultspresentedinthisworkprovidedetailedyetreadilyaccessibleerrormapsforassessingtheimportanceofvarioussimplifyingassumptionswhicharecommonlyusedbyresearchers.1.INTRODUCTIONboundaryinfluencestheporositydistributionofaporousmedium.Th
6、eporosityishighinthevicinityTHETRANSPORTphenomenainporousmediahaveofanimpermeableboundaryanddecreasestoanbeenofcontinuinginterestforthepastfivedecades.asymptoticvalueataboutfourtofivespherediam-Thisintereststemsfromthecomplicatedandinter-etersfromit.Moreo
7、ver,theporosityofthebedwasestingphenomenaassociatedwithtransportprocessesfoundtoexhibitsinusoidallydampingdecayinporousmedia.Thewideapplicationsavailablehaveespeciallyclosetothewall(Robleeetal.[3]andledtonumerousinvestigationsinthisarea.SuchBenenatiandBro
8、silow[4]).Thisphenomenonintro-applicationscanbefoundinsolarreceiverdevices,ducesthechannelingeffectwhichhasbeenwidelybuildingthermalinsulation,heatexchangers,energydiscussedintheliterature[S-l21.storageunits,ceramic
