第23卷第2期2023年2月过程工程学报TheChineseJournalofProcessEngineeringVol.23No.2Feb.2023LatticeBoltzmannsimulationofparticleflowcharacteristicsinporousmediaYuntaoCHENG,ShuyanWANG,BaoliSHAO*,ZihanYUAN,LeiXIEKeyLaboratoryofImprovingOilandGasRecoveryofMinistryofEducation,SchoolofPetroleumEngineering,NortheastPetroleumUniversity,Daqing,Heilongjiang163318,ChinaAbstract:Themigrationanddepositionofsuspendedparticleswithinporousmediaisofgreatsignificanceinmanyapplicationssuchassewagetreatment,pollutantpurificationandwelldrilling.Especiallyintheoilindustry,thedepositionofsmallparticlesinthereservoirmayaffecttherecoveryofcrudeoil.Thestructureofporousmediaiscomplex,makingitdifficulttounderstandthedetailsoftheflowfield.Therefore,itisnecessarytoexplorethephenomenaandmechanismofsuspendedparticleflowinporousmedia.ThelatticeBoltzmannmethod(LBM)isusedtonumericallysimulatetheflowcharacteristicsofsuspendedparticlesinporousmedia.Theskeletonparticlesandsuspendedparticlesareconstructedbythefinitesizeparticle(FSP)method.TheHalf-Waybouncebackformatisadoptedtorealizetheinteractionsbetweensuspendedparticlesandthefluid.Bychangingtheinletvelocityoftheliquidphase,porosityandparticlediameter,themovementanddepositionofsuspendedparticlesareanalyzed.Thesimulationresultsshowthattheincreaseintheinletvelocityoftheliquidshortensthemigrationtrajectoryofthesuspendedparticlesandimprovesthecontactforceoftheparticle.Therearealargenumberofsuspendedparticlescloggingneartheinletofporousmedia.Theparticleretentiontimeandtheparticledepositionratedecreasewiththeincreaseoftheinletvelocity,whilethegranulartemperatureshowstheoppositetrend.Meanwhile,thegranulartemperaturefirstincreasesandthendecreases,andgraduallytendstobestablewithtimepassingby.Thereductionofporositystrengthensthecollisionsbetweenthesuspendedparticles.Thechangeofporosityfrom0.581to0.400increasesthegranulartemperatureby9times.Astheporosityisenhanced,theparticleaxialvelocityincreases,whiletheparticlecontactforcedeclines.Thegranulartemperatureisraised...
