Command manual

Command list

VELOCITY_CAP

Boundary conditions
*VELOCITY_CAP
$v_{max}^{N}$, $v_{max}^{DP1}$, $v_{max}^{DP2}$

Parameter definition

VariableDescription
$v_{max}^{N}$ Maximum allowed node velocity
default: no upper limit
$v_{max}^{DP1}$ Maximum allowed discrete particle velocity (SOIL and SPH)
default: no upper limit
$v_{max}^{DP2}$ Maximum allowed discrete particle velocity (AIR and HE)
default: no upper limit

Description

This command is used to define an upper limit for node, discrete particle and SPH velocities. The purpose it to prevent single nodes or particles, that (for numerical reasons) have reached extreme velocities, from destroying the simulation results. Nodes and particles that are moving too fast are simply brought back to the specified maximum allowed levels.