IotaSuite User Manual
  • Summary
  • Dashboard
    • Creating a Project
    • Editing a Project
    • Deleting a Project
    • Loading a Project
    • Unloading a Project
  • Project
    • Datasets
      • Importing a Dataset
      • Editing a Dataset
      • Deleting a Dataset
      • Visualising a Dataset
    • Screenshots
      • Importing a Screenshot
      • Editing a Screenshot
      • Deleting a Screenshot
      • Exporting a Screenshot
    • Graphs
      • Importing a Graph
      • Editing a Graph
      • Deleting a Graph
      • Exporting a Graph
    • Meshes
      • Importing a Mesh
      • Editing a Mesh
      • Deleting a Mesh
    • Videos
      • Editing a Video
      • Deleting a Video
      • Exporting a Video
    • Files
      • Importing a File
      • Editing a File
      • Deleting a File
    • Scripts
      • Importing a Script
      • Editing a Script
      • Deleting a Script
    • List of Scenarios
      • Creating a New Scenario
      • Loading a Scenario
      • Deleting a Scenario
      • Cloning a Scenario
  • Scenario
    • Creating a New scenario
    • Loading a Scenario
    • Editing a Scenario
    • Deleting a Scenario
    • Cloning a Scenario
  • Pre
    • Cretaing a Mesh of a Simple Geometry
      • Circle
      • Rectangle
      • Cuboid
      • Cylinder
    • Loading a Mesh
    • Importing a Mesh from a File
    • Filling holes of a Surface Mesh
    • Generating / Re-meshing a volume mesh
    • Remeshing a surface mesh
    • Creating Cut-Planes
  • Post
    • Visualising Results
    • Animating Results
    • Taking a Screenshot
    • Recording an Animation
    • Setting a View
      • Exporting and Importing a View
    • Post-processing Tools
      • Generating Cut Planes with Results
      • Generating a Line Variation Graph
      • Generating a Point Evolution Graph
      • Generating a Result Integral Graph
      • Generating a Result Statistics Graph
  • Graph
    • Customizing the Style of a Graph Traces
    • Customizing Graph Axes Settings
    • Exporting a Graph as an Image
  • Coarse-graining
    • Introduction
    • Coarse-granining module
      • Loading a Mesh
      • Input
        • Input DEM data
          • EDEM 2017+
          • LIGGGHTS-DUMP
          • LIGGGHTS-VTK
          • P4X
        • Pre-Filters
          • Overwrite Groups by Size
          • Filter Group ID
          • Filter by Bounding Box
          • Overwrite Velocity
          • Overwrite Groups
      • Averaging
        • Temporal Averaging
        • Spatial Averaging
          • Function
          • Width and Cutoff Factor
          • Gradients
          • Spatial Integral
        • Advanced
          • Particle Group Concentration
          • Surface/Wall Analysis
          • Residence Time
      • Output
        • Scale Results
        • Create DEM Dataset
        • Coarse Graining Output
        • Output Cylindrical Coordinates
        • Post-Analysis
          • Mixing
          • User-defined Scripts
  • Using Iota with EDEM
  • Using Iota with LIGGGHTS
    • LIGGGHTS-DUMP
    • LIGGGHTS-VTK
  • Using Iota with ANSYS-Fluent
  • Tutorials
    • Backhoe Tutorial EDEM 2017+
    • Paddle Mixer Tutorial EDEM 2017+
  • Licensing
    • Iota-Suite End User Agreement
    • Third Party Licenses
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  1. Using Iota with LIGGGHTS

LIGGGHTS-DUMP

PreviousUsing Iota with LIGGGHTSNextLIGGGHTS-VTK

Last updated 5 years ago

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The dump files generated by , for the particles, can have any selection of variables. However, to be processed in Iota a minimum number of variables is required and the order is fixed. The same restriction affect the particle-particle and particle-geometry contacts files

In the particles file, the filename must have the extension ".p". The variables in the command must follow :

  • id: column one

  • type: column two

  • x,y,z: columns three to five

  • vx,vy,vz: columns nine to eleven

  • radius: column eighteen

The rest of columns will be considered as user defined variables, and will be processed in that way. An example of the dump command for the particles file is:

dump Pfile all custom 400 dumpfile.p id type x y z ix iy iz vx vy vz fx fy fz &
  omegax omegay omegaz radius

The particle-particle contacts file must have the extension ".c". In this file, just the IDs of particles in contact and forces will be read:

  • id: IDs of particles in contact. Columns seven to nine

  • fx,fy,fz: Contact forces. Columns two ten to twelve

The rest of the columns will not be considered.

In the case of the particle-geometry contact files must have the extension ".w". The rules for such files are similar to the particle-particle contact files, with a condition on the contact point position:

  • cx,cy,cz: Contact point position. Columns one to three

  • id: IDs of particles in contact. Columns seven to nine

  • fx,fy,fz: Contact forces. Columns ten to twelve

compute cp all pair/gran/local id pos force
compute cw all wall/gran/local id pos force
dump Cfile all local 400 dumpfile.c c_cp[1] c_cp[2] c_cp[3] c_cp[4] c_cp[5] &
  c_cp[6] c_cp[7] c_cp[8] c_cp[9] c_cp[10] c_cp[11] c_cp[12]
dump Wfile all local 400 dumpfile.w c_cw[1] c_cw[2] c_cw[3] c_cw[4] c_cw[5] &
  c_cw[6] c_cw[7] c_cw[8] c_cw[9] c_cw[10] c_cw[11] c_cw[12]

In the case of the CAD wall/geometries, the only restriction is that all the meshes to be processed should be contained in a single stl file per time-step for the case of moving CAD walls/geometries. In the case of static CAD wall/geometries, it is possible to just provide a single stl file for the processing.

  • Static meshes: dump dmpstl all mesh/stl 400 dump.stl

  • Moving meshes: dump dmpstl all mesh/stl 400 dump*.stl

An example of the dump command for both contact files is:

Example of the dump command for moving and static CAD wall/geometries files are:

A detailed description on how to use the LIGGGHTS DUMP files in the module can be found in the section.

LIGGGHTS
LIGGGHTS
LIGGGHTS
LIGGGHTS
LIGGGHTS
coarse-graining
Input DEM data: LIGGGHTS-DUMP