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Sedimentation of spherical particles. †

Simultaneous simulation of 100,000 particles and host fluid †

• Yellow and Red particles are identical. Different colors are used just for visualization purpose.

• Simulation parameters
  • CFD Lattice: 256 x 256 x 512 mesh
  • Number of Particles: N = 100,000
  • Diameter of Particles: D = 4 mesh
  • Volume Fraction: Φ = 0.099
  • Particles Reynolds No.: Re ~ 0.1
  • Number of Iteration Steps: 32,400
  • Computation Time: 6 Days on Intel Core-i7-3.2GHz (with ICC+MKL+OMP)

3204 Particles †

• Yellow and Red particles are identical. Different colors are used just for visualization purpose.

• Simulation parameters
  • CFD Lattice: 256 x 256 x 512 mesh
  • Number of Particles: N = 3,204
  • Diameter of Particles: D = 10 mesh
  • Volume Fraction: Φ = 0.05
  • Particles Reynolds No.: Re ~ 1
  • Number of Iteration Steps: 25,000
  • Computation Time: 2.5 Days on Intel Core-i7-3.2GHz (with ICC+MKL+OMP)

• To reproduce these simulations
  • Input UDF file: gravity.udf gravity100000.udf
  • Define UDF file: define_2.00.udf
  • Command (remove "./" if you use Windows command prompt)

   > ./kapsel -Igravity.udf -Ooutput.udf -Ddefine_2.00.udf -Rrestart.udf

• Visualization
  • You can make the same animation as above with particleshow_gravity.py to be loaded from GOURMET. Open "output.udf"

• Related Papers