Enhancing LAMMPS Capabilities

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LIGGGHTS Models - ReleasedSPH – Smoothed Particle HydrodynamicsSPH is well-suited for geometrically complex systems, and cases wherenumerical diffusion i of Finite it Volume approach is not acceptableReleased in LIGGGHTS 1.4 – commands pair sph, fix sph/density/continuity,fix sph/density/corr, fix sph/pressure/summation, fix wall/sph, fix wall/region/sphPrinciple of SPHSloshing Tank with SPH in LIGGGHTS vs.Volume of Fluid (VOF) Method in OpenFOAM®Christian Doppler Laboratory on Particulate Flow Modelling www.particulate-flow.at 10
LIGGGHTS Models - ReleasedHertz-Mindlin (HM) Granular Contact ModelF = ( k δn− γ vn ) + ( k δ t − γ vt )n ij{n ij{t ij{t ij{normal normaltangential tangentialoverlap relative vel .overlap relative vel .14444244443normalforce14444244443tangentialforcekγknnt43* *= YRδn,5= −2β Snm6* *= 8GRδ5γ t= β m6*−2 S t≥n,*≥ 0,0.* *Sn = 2YR δn, St= 8G1*Rδn22( 1−ν) ( 1−ν)ln( e ) 112β = , = + ,22*ln ( e ) + π Y Y1Y2G*1R2=1=R( 2+ ν)( 1−ν) 2( 2+ ν)( 1−)1 12ν2Y1+R11= ,* *1 2 m+1=mY1+mY...Young's modulus G...Shear modulusν...Poissonνratioe...coeff.ofofrestitution122*Christian Doppler Laboratory on Particulate Flow Modelling www.particulate-flow.at 11
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: II. Models
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 and 42: Coupling to Continuum MethodsMotiva
Page 43 and 44: Coupling to Continuum MethodsUnreso
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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