Particles

Analysis > Particles

Description

This is used to create particles for bodies in the active solutions that are thin sections/sheet bodies. The input geometry can be CAD or FE models.

Particle spacing

Particle spacing is the distance between adjacent particles in the global coordinate axis. The particles are uniformly distributed along the global XYZ axis.

Number of layers

Specified number of layers of particles are created inside the volume. If the input body does not contain any closed volume, initially particles will be formed enclosing the surface of this body and then particles will be added to guarantee the specified number of particles.

Ignore Particles

This option is used to ignore the particle creation in the normal direction of the selected faces.

In the Water management solution, the "Beyond boundary edges in above face" check box is supported to restrict the particle creation beyond the boundary edges in the selected "Above face" of the "Ignore particles" option.

Example:

  • "Beyond boundary edges in above face" check box OFF - Particles are created beyond the boundary edges of the selected face (as encircled in above left side image).
  • "Beyond boundary edges in above face" check box ON - Particle creation is restricted within the boundary edges of the selected face (as shown in above right side image).

Note:
  • When an active SPH Solution exists, the output particle bodies would be automatically added to the Solution Mesh bodies. If the Solution already contains the particle mesh for an input body, the particle mesh in the Solution would be replaced by the newly created particle body.
  • Particles for the specified custom faces in probes boundary conditions and for the specified regions/custom faces in inlet boundary conditions are created in the separate model named as "InletRegionsProbes.gda" and these particles will not be aligned with the global XYZ grid. By default, these particles are created with tolerance of 5 percent of particle spacing value. Supported an environmental variable “SIMLAB_PROBES_PARTICLE_TOL” to set a value from 0 to 1 and it represent tolerance as 0 to 100 percent of particle spacing value.
  • The faces specified in the "Inlet | Custom | Select faces" and “Probes | Massflow probe | Custom surface” are ignored in particle creation.