简介:ThesedimentationofcircularparticlesinaverticalchannelfilledwithOldroyd-BfluidwasstudiedbyanimprovedDistributedLagrangeMultiplier/fictitiousdomain(DLM)method.Thesedimentingbehaviorsoftwoparticlesarepresentedfirstly,whichshowsthat,whentheparticlesaredroppedinaviscoealsticfluid,thestableconfigurationistheonewheretheparticlesarealignedparalleltotheflowdirectionwhentheMachnumberMislessthan1andtheelasticitynumberEisgreaterthan1.ThisagreeswellwiththeknownexperimentalinRef.[1]andsimulationresultsinRef.[2].Oursimulationsalsoshowthat,asinNewtonianfluid,thesedimentationoftheparticleswillbeacceleratedduetotheinteractionbetweenparticlesinaviscoealsticfluid.
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