# clump list command

Syntax

clump list <keyword> <range>

Primary keywords:

List clump information. By default, the clump ID, template name, pebble count, active/total contact count, fixity, and position are listed. Use the attribute keyword to list all clump ball attributes that can be listed.

Note

• Use the model precision command to change the precision of listed floating point values.
• The optional range always applies to clumps and not pebbles.
attribute keyword

List clump attributes. If no keyword is given, then the available attributes are listed. If the keyword is specified, then the value of that attribute is listed for each clump.

Attributes are characteristics of clumps such as mass and velocity. These are distinct from properties that represent surface conditions and are used in contact models to delineate interactions.

damp

Clump local damping coefficient.

density

Clump density.

displacement

Accumulated clump displacement vector as a result of cycling.

displacement-x

The $$x$$-component of the accumulated clump displacement as a result of cycling.

displacement-y

The $$y$$-component of accumulated displacement as a result of cycling.

displacement-z (3D ONLY)

The $$z$$-component of accumulated displacement as a result of cycling.

euler-x (3D ONLY)

The $$x$$-euler angle (in degrees) of the current clump orientation. See the euler keyword for further details.

euler-y (3D ONLY)

The $$y$$-euler angle (in degrees) of the current clump orientation. See the euler keyword for further details.

euler-z (3D ONLY)

The $$z$$-euler angle (in degrees) of the current clump orientation. See the euler keyword for further details.

force-applied

Force vector applied to clumps.

force-contact

Sum of the contact force accumulated to the clumps during the previous force-displacement update. This value will be modified during the next force-displacement update.

force-contact-x

The $$x$$-component of the contact force.

force-contact-y

The $$y$$-component of the contact force.

force-contact-z (3D ONLY)

The $$z$$-component of the contact force.

fragment

Fragment ID (see “Fragment”).

moi-11

11 component of the clump real moment of inertia. When modified, only the clump principal moments of inertia are modified and the other clump attributes are not changed (e.g., volume, pebble sizes). The specification of the clump principal moments of inertia via the command line or via FISH results in the principal moments of inertia being in a fixed state so that they will not be automatically updated when scaling a clump, changing the volume, or changing the density. The fix state can be modified in FISH (see the clump.moi.fix intrinsic).

moi-12

12 component of the clump real moment of inertia. When modified, only the clump principal moments of inertia are modified and the other clump attributes are not changed (e.g., volume, pebble sizes). The specification of the clump principal moments of inertia via the command line or via FISH results in the principal moments of inertia being in a fixed state so that they will not be automatically updated when scaling a clump, changing the volume, or changing the density. The fix state can be modified in FISH (see the clump.moi.fix intrinsic).

moi-13

13 component of the clump real moment of inertia. When modified, only the clump principal moments of inertia are modified and the other clump attributes are not changed (e.g., volume, pebble sizes). The specification of the clump principal moments of inertia via the command line or via FISH results in the principal moments of inertia being in a fixed state so that they will not be automatically updated when scaling a clump, changing the volume, or changing the density. The fix state can be modified in FISH (see the clump.moi.fix intrinsic).

moi-22

22 component of the clump real moment of inertia. When modified, only the clump principal moments of inertia are modified and the other clump attributes are not changed (e.g., volume, pebble sizes). The specification of the clump principal moments of inertia via the command line or via FISH results in the principal moments of inertia being in a fixed state so that they will not be automatically updated when scaling a clump, changing the volume, or changing the density. The fix state can be modified in FISH (see the clump.moi.fix intrinsic).

moi-23

23 component of the clump real moment of inertia. When modified, only the clump principal moments of inertia are modified and the other clump attributes are not changed (e.g., volume, pebble sizes). The specification of the clump principal moments of inertia via the command line or via FISH results in the principal moments of inertia being in a fixed state so that they will not be automatically updated when scaling a clump, changing the volume, or changing the density. The fix state can be modified in FISH (see the clump.moi.fix intrinsic).

moi-33

33 component of the clump real moment of inertia. When modified, only the clump principal moments of inertia are modified and the other clump attributes are not changed (e.g., volume, pebble sizes). The specification of the clump principal moments of inertia via the command line or via FISH results in the principal moments of inertia being in a fixed state so that they will not be automatically updated when scaling a clump, changing the volume, or changing the density. The fix state can be modified in FISH (see the clump.moi.fix intrinsic).

moi-principal (3D ONLY)

Real principal moments of inertia.

moment-applied

Moment applied to clumps.

moment-applied-x (3D ONLY)

The $$x$$-component of the moment applied to clumps.

moment-applied-y (3D ONLY)

The $$y$$-component of the moment applied to clumps.

moment-applied-z (3D ONLY)

The $$z$$-component of the moment applied to clumps.

moment-contact

Sum of the contact moments accumulated to the clumps during the previous force-displacement update. This value will be modified during the next force-displacement update.

moment-contact-x (3D ONLY)

The $$x$$-component of the contact moment.

moment-contact-y (3D ONLY)

The $$y$$-component of the contact moment.

moment-contact-z (3D ONLY)

The $$z$$-component of the contact moment.

position

Location of clump centroid.

position-x

The $$x$$-component of the location of clump centroids.

position-y

The $$y$$-component of the location of clump centroids.

position-z (3D ONLY)

The $$z$$-component of the location of clump centroids.

rotation (2D ONLY)

Current clump orientation. The orientation is updated only when orientation tracking has been enabled (see model orientation-tracking command).

spin

Clump angular velocity in radians per second.

spin-x (3D ONLY)

The $$x$$-component of the clump angular velocity in radians per second.

spin-y (3D ONLY)

The $$y$$-component of the clump angular velocity in radians per second.

spin-z (3D ONLY)

The $$z$$-component of the clump angular velocity in radians per second.

velocity

Clump translational velocity vector.

velocity-x

The $$x$$-component of the clump velocity.

velocity-y

The $$y$$-component of the clump velocity.

velocity-z (3D ONLY)

The $$z$$-component of the clump velocity.

volume

Clump volume. When modified, only the clump mass and real mass are modified and the other clump attributes based on volume are not changed (e.g., moment of inertia, pebble sizes). The specification of the volume via the command line or via FISH results in the principal moments of inertia being in a fixed state so that they will not be automatically updated when scaling a clump, changing the volume, or changing the density. The fixity state of the inertia can be modified in FISH (see the clump.moi.fix intrinsic).

contact <all>

List the contacts with a clump. The pebble ID, contact ID, ID of the other contacting piece, contact type, activity state, inhibited state, and contact model are listed. By default, only active contacts are listed. Use the all keyword to list active and inactive contacts.

extra i <pebble>

List the extra variables at index i. If the pebble keyword is given, then the pebble extra variables at index i are listed.

group s <pebble>

List the group names at slot s. If the pebble keyword is given, then the pebble group variables at slot s are listed.

property <s ...>

List pebble properties. If no s is given, then the available properties are listed for each clump (i.e., the list of properties over all pebbles in the clump). If s is specified, then the value of that property is listed for each pebble.

Properties represent surface conditions and are used in contact models to delineate interactions. These are distinct from attributes that are characteristics of balls such as mass and velocity.

result

List the clump model results that have been tabulated. See the clump results command for more details.

template <attribute s >

List information regarding clump templates, including the clump template name, referenced status, pebble count, volume, and density. The attribute kewyord without s lists the available attributes. If s is specified, then the value of that attribute is listed for each clump template.

Usage Examples

Show the default listing for clumps.

clump list


List the clump velocities.

clump list attribute velocity


List the clump applied forces.

clump list attribute force-applied


List the clump property kn.

clump list property 'kn'