HardCoreExcludedVolume #

An excluded volume potential with a hard core that never overlaps to each other.

Example #

[[forcefields.global]]
interaction = "Pair"
potential   = "HardCoreExcludedVolume"

ignore.particles_within.bond    = 3
ignore.particles_within.contact = 1

spatial_partition.type = "CellList"
spatial_partition.margin = 0.2

cutoff     = 2.5
epsilon    = 0.2
parameters = [
    {index = 0, core_radius = 3.0, soft_shell_thickness = 2.0},
    {index = 1, core_radius = 3.0, soft_shell_thickness = 2.0},
]

Input Reference #

• cutoff: Floating (Optional. By default, 2.)
  • Cutoff distance relative to the \( \sigma_{ij} \) .
• epsilon: Floating
  • It determines the strength of the potential.
• index: Integer
  • The index of the particle. The index is 0-based.
• offset: Integer (Optional. By default, 0)
  • Offset for the index.
• core_radius: Floating
  • The size of the core.
  • \( r_0 \) is a sum of core_radii.
• soft_shell_thickness: Floating
  • The thickness of the soft shell.
  • \(\sigma_{ij}\) is a sum of soft_shell_thicknesses.

Remarks #

This feature is developed by contributor, @yutakasi634.