2015
Onset and cessation of motion in hydrodynamically sheared granular beds
Clark AH, Shattuck MD, Ouellette NT, O'Hern CS. Onset and cessation of motion in hydrodynamically sheared granular beds. Physical Review E 2015, 92: 042202. PMID: 26565230, DOI: 10.1103/physreve.92.042202.Peer-Reviewed Original ResearchParticle Reynolds numberGranular bedReynolds numberHigh particle Reynolds numberModerate particle Reynolds numbersFlow rateWeakest-link statisticsFluid flow rateBed motionGrain-scale mechanismsStatic bedParticle inertiaFluid viscosityShields numberInertial effectsShear flowParticle motionSediment transportHydrodynamic shear flowStatic statePacking structureTransition timeMotionDynamics simulationsBedShear-accelerated crystallization in a supercooled atomic liquid
Shao Z, Singer JP, Liu Y, Liu Z, Li H, Gopinadhan M, O'Hern CS, Schroers J, Osuji CO. Shear-accelerated crystallization in a supercooled atomic liquid. Physical Review E 2015, 91: 020301. PMID: 25768445, DOI: 10.1103/physreve.91.020301.Peer-Reviewed Original ResearchShear flowBulk metallic glassShear rateThermoplastic deformationCritical shear rateMetallic glassesMaterial exhibitIsothermal annealingPéclet numberGlass transitionFlat diskCrystallization kineticsFlowLiquidSubstantial viscosityAlloyCrystallization timeSimilar systemsCrystallizationAnnealingDeformation
2005
Velocity Profiles in Repulsive Athermal Systems under Shear
Xu N, O'Hern CS, Kondic L. Velocity Profiles in Repulsive Athermal Systems under Shear. Physical Review Letters 2005, 94: 016001. PMID: 15698098, DOI: 10.1103/physrevlett.94.016001.Peer-Reviewed Original ResearchVelocity profilesMean velocity profileNonlinear velocity profilesPlanar shear flowEnhanced velocity fluctuationsVelocity fluctuationsAthermal systemsShear wavesShear flowShearing wallsVelocity uUnderdamped systemUnderdamped dynamicsRandom close packingOverdamped dynamicsPacking fractionSmall dampingSpatial dimensionsCritical valueDynamics simulationsMolecular dynamics simulationsFraction phiDampingShearClose packing