LAMMPS WWW Site - LAMMPS Documentation - LAMMPS Commands

### compute smd/triangle/mesh/vertices

Syntax:

    compute ID group-ID smd/triangle/mesh/vertices

- ID, group-ID are documented in compute command
- smd/triangle/mesh/vertices = style name of this compute command

Examples:

    compute 1 all smd/triangle/mesh/vertices

Description:

Define a computation that returns the coordinates of the vertices corresponding to the triangle-elements of a mesh created by the fix smd/wall_surface.

See this PDF guide to using Smooth Mach Dynamics in LAMMPS.

Output info:

This compute returns a per-particle vector of vectors, which can be accessed by any command that uses per-particle values from a compute as input. See How-to discussions, section 6.15 for an overview of LAMMPS output options.

The per-particle vector has nine entries, (x1/y1/z1), (x2/y2/z2), and (x3/y3/z3) corresponding to the first, second, and third vertex of each triangle.

It is only meaningful to use this compute for a group of particles which is created via the fix smd/wall_surface command.

The output of this compute can be used with the dump2vtk_tris tool to generate a VTK representation of the smd/wall_surface mesh for visualization purposes.

The values will be given in units of distance.

Restrictions:

This compute is part of the USER-SMD package. It is only enabled if LAMMPS was built with that package. See the Making LAMMPS section for more info.

Related commands:

fix smd/move/tri/surf, fix smd/wall_surface

Default: none