A single rigid chain in zigzag shear flow (s=0.01) at kBT=0

#youtube(xz17I8cQMQk)

  • cf. "A single chain in zigzag shear flow (s=0.01) at kBT=0" in Chain Motions
  • Simulation parameters (files001_t000_rigid.udf)
    • CFD Lattice: 32 x 64 x 16 mesh
    • Number of Beads: N = 5
    • Diameter of Particles: D = 4 mesh
    • Volume Fraction: Φ = 0.041
    • Temperature: kBT = 1.0
    • Shear Rate: s = 0.01
    • Number of Iteration Steps: 240000
    • Computation Time: 1 day on 8 cores (with ICC+MKL+OMP)

A helical chain at a constant velocity

#youtube(dhH6oWPbSQM)

  • Simulation parameters (fileN30k3.0p52.0_vy.udf)
    • CFD Lattice: 256 x 256 x 256 mesh
    • Number of Beads: N = 30
    • Diameter of Particles: D = 4 mesh
    • Volume Fraction: Φ = 0.00048
    • Velocity: V = -0.005
    • Number of Iteration Steps: 100000
    • Computation Time: 4 days on single core
  • Parameters of the helical particle
    • Orientation: crockwise
    • Number of Beads: N = 30
    • Number of Turns: k = 3.0
    • Helical Pitch: p = 52.0 mesh

A helical chain at a constant angular velocity

#youtube(-7KCmXbTCxs)

  • Simulation parameters (fileN30k3.0p52.0_omegay.udf)
    • CFD Lattice: 256 x 256 x 256 mesh
    • Number of Beads: N = 30
    • Diameter of Particles: D = 4 mesh
    • Volume Fraction: Φ = 0.00048
    • Angular Velocity: Ω = 0.00041
    • Number of Iteration Steps: 100000
    • Computation Time: 4 days on single core
  • Parameters of the helical particle
    • Orientation: crockwise
    • Number of Beads: N = 30
    • Number of Turns: k = 3.0
    • Helical Pitch: p = 52.0 mesh

A helical chain in a gravitational field

#youtube(7b9OB4tmB7A)

  • Simulation parameters (fileN30k3.0p52.0_gravity.udf)
    • CFD Lattice: 256 x 256 x 256 mesh
    • Number of Beads: N = 30
    • Diameter of Particles: D = 4 mesh
    • Volume Fraction: Φ = 0.00048
    • Gravity: g = -0.01
    • Number of Iteration Steps: 100000
    • Computation Time: 1.1 day on 8 cores (with ICC+MKL+OMP)
  • Parameters of the helical particle
    • Orientation: crockwise
    • Number of Beads: N = 30
    • Number of Turns: k = 3.0
    • Helical Pitch: p = 52.0 mesh

Helical chains in a gravitational field

#youtube(PnkM2dWNZmo)

  • Simulation parameters (filehelixes_gravity.udf)
    • CFD Lattice: 256 x 256 x 256 mesh
    • Number of Beads: N = 100
    • Diameter of Particles: D = 4 mesh
    • Volume Fraction: Φ = 0.0016
    • Gravity: g = -0.01
    • Number of Iteration Steps: 100000
    • Computation Time: 1.1 day on 8 cores (with ICC+MKL+OMP)
  • Parameters of the helical particles (left-to-right)
    • Number of Beads: N = 35, 25, 40
    • Number of Turns: k = 4.0, 2.5, 3.0
    • Helical Pitch: p = 20.0, 44.0, 36.0

Helical chains in zigzag shear flow with Lees-Edwards periodic boundary condition

#youtube(xqwhdLzhtJI)

  • Simulation parameters (filehelixes_shear0005.udf)
    • CFD Lattice: 256 x 256 x 256 mesh
    • Number of Beads: N = 100
    • Diameter of Particles: D = 4 mesh
    • Volume Fraction: Φ = 0.0016
    • Shear Rate: s = 0.005
    • Number of Iteration Steps: 50000
    • Computation Time: 2 days on 8 cores (with ICC+MKL+OMP)
  • Parameters of the helical particles (left-to-right)
    • Number of Beads: N = 35, 25, 40
    • Number of Turns: k = 4.0, 2.5, 3.0
    • Helical Pitch: p = 20.0, 44.0, 36.0


  • Related Papers