资源描述：
《Experimental and numerical study of solidification process in unsaturated granular packed bed英文文献资料》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、JOURNALOFTHERMOPHYSICSANDHEATTRANSFERVol.18,No.1,January–March2004ExperimentalandNumericalStudyofSolidificationProcessinUnsaturatedGranularPackedBedP.Rattanadecho∗ThammasatUniversity,Pathumthani12121,ThailandThesolidificationprocessinunsaturatedgranularpackedbedsisinvestiga
2、tedtheoreticallyandnumerically.Thewatertransporttothesolidificationinterface,thatis,freezingfront,playsanimportantroleonsolidificationinunsaturatedgranularpackedbeds.Itisfoundthattherateoftheabsorptionofwaterintothefrozenlayerdependsonthefreezingheatfluxandthewatersaturation
3、atthesolidificationinterface.Asaresult,icecontentinthefrozenlayerisrelatedtotherateoftheabsorptionofwaterandthefreezingheatflux.Theone-dimensionalsolidificationmodelassociatedwithphasechangeconditionsandthecoordinatetransformationtechniquesforthemovingboundaryproblemarecompl
4、etelypresentedtocalculatethetemperatureandwatersaturationdistributionsandtheinterfaceposition.Later,thepredictedresultsarecomparedwithexperimentalresultsobtainedusinggranularpackedbedscomposedofglassbeadsandwater.Nomenclatureinmanyengineeringsystems.Someofthespecificapplic
5、ationsin-cp=specificheatatconstantpressure,J/kgKcludepipelinetransportinpermafrostregionsandcryosurgery,asd=particlesize,mwellasinthetransportationofcoalincoldweather,iceaccretionondW/dt=rateofabsorptionofwater,kg/m2svehiclesandstaticstructures,solidificationofalloys,foodpr
6、ocess-f=waterflowrate,kg/m2sing,chemicalprocesses,cryopreservationofengineeringtissues,wh=heattransfercoefficient,W/m2Kandmanyothers.K=permeability,m2Asimilarproblem,thatis,thesimultaneousheatandmasstransferL=latentheat,J/kgprobleminporousmediabasedonWhitaker’stheory,hasbee
7、nstud-iedbymanyauthorsincludingWhitakerandChou,1Plumbetal.,2p=pressure,Pa345q=freezingheatflux,J/m2sUdell,KavianyandMittal,RogersandKaviany,andRatanadechofetal.6−8R=positionofsolidificationinterface,ms=wateroricesaturationUptothepresenttime,therelatedproblemofsolidificationi
8、nsir=irreduciblesaturationporousmediaintheabsenceofanunsaturatedstatehasbeeninvesti-T=temperatur
