Enhancing LAMMPS Capabilities

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Coupling to Continuum MethodsMotivationSimulation of Coupled Fluid-Granular Flow: CFD-DEM Method• Able to transfer arbitrary particle properties to OpenFOAM fields• Can use arbitrary unstructured meshes• Able to perform resolved CFD-DEM DEM and unresolved CFD-DEMDEM-(f1 +f2)αf,1αf,2= +-(f3 + f4)ff1f2f4f3CFD with adapted voidfraction andmomentum sourcesDEM with forcecoming from CFD= +Christian Doppler Laboratory on Particulate Flow Modelling www.particulate-flow.at 42
Coupling to Continuum MethodsUnresolved CFD-DEMDEMTheoretical background:Navier-Stokes equations for the fluid in presence of a granular phase∂α∂f∂ tρf+ ∇ ⋅( α ρ uf)f∂ tf( α ρ u )f+ ∇ ⋅ff= 0( α ρ ufuf) = −α∇p− ( uf−us) + ∇ ⋅( α τ) + α ρ gfffK fsfffα f fluid volume fractionu f fluid velocityτ, p stress tensor, pressureρ f fluid densityK fs fluid solid momentum exchange termcomprises drag force, Magnus and Saffman force, virtual mass force,...Christian Doppler Laboratory on Particulate Flow Modelling www.particulate-flow.at 43
Page 1 and 2: Enhancing LAMMPS CapabilitiesGranul
Page 3 and 4: Open Source DEM and CFD-DEMOutline1
Page 5 and 6: About UsMission StatementCD Lab Par
Page 7 and 8: The LIGGGHTS+CFDEM CodesCooperation
Page 9 and 10: II. Models
Page 11: LIGGGHTS Models - ReleasedHertz-Min
Page 14 and 15: Lattice Beam ModelDynamic fracture
Page 16 and 17: LIGGGHTS ModelsCapturing non-spheri
Page 18 and 19: LIGGGHTS ModelsCapturing non-unifor
Page 20 and 21: CAD InteroperabilityImporting a Mes
Page 22 and 23: CAD InteroperabilityGenerating a Pa
Page 24 and 25: IV. Features and Coding Concepts
Page 26 and 27: Dynamic Load-BalancingSilo Test Cas
Page 28 and 29: Abstraction Layer I: Per-Particle P
Page 34 and 35: Abstraction Layer II: “Transport
Page 36 and 37: V. Coupling to Continuum Methods
Page 39 and 40: Coupling to Continuum MethodsHow do
Page 41: Coupling to Continuum MethodsMotiva
Page 46 and 47: Application ExampleSoil Sampling wi
Page 48 and 49: Industrial ApplicationReduction of
Page 50: Thank you for your attention!Questi

Enhancing LAMMPS Capabilities

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