Reference / Input deck / model / boundary conditions / wall / velocity
velocity
Velocity of the wall surface, for surfaces in relative motion such as a moving belt or a rotating wheel.
typerequired
required
How the wall moves: linear translates it along a vector, rotating turns it about an axis.
Options
| Value | What it does |
|---|---|
| linear | Selects a linear (translational) wall velocity. |
| rotating | Selects a rotational wall velocity. |
Used incavity
Guidance: Choosing a wall model →vectorrequiredlinear only
vector (3 floats)·required
Direction of linear velocity
Used incavity
machlinear only
float·not set by default
Mach number for linear velocity - overrides magnitude of the translation velocity
axisrequiredrotating only
unit vector (3 floats)·required
Axis of rotation.
Used inwheel
originrequiredrotating only
vector (3 floats)·required·in m
A point on the axis of rotation.
Used inwheel
omegarequiredrotating only
float·required·in rad/s
Angular velocity, positive right-handed about 'axis'.
Used inwheel