Engine Keyword Initialize rotational velocity about an axis and
translational velocity.
Format
/INIV/AXIS/Keyword3
Frame_ID
VXt
VYt
VZt
Vr
N1N2...,
NN
Definition
Field |
Contents |
SI Unit
Example |
Keyword3 |
Direction X, Y, and Z
of the frame defining the rotation axis. |
|
Frame_ID |
Frame
identifier. (Integer)
|
|
VXt
,
VYt
,
VZt
, Vr |
Translational velocity
components in the local frame and rotational velocity about the
axis. (Real)
|
or
|
N1N2...,
NN |
List of nodes. |
|
Comments
- If
Frame_ID is not zero, the initial velocities are applied
with respect to this local frame.
- Once
is expressed in the global system, the velocities
are initialized with respect to:(1)
Where,
-
- Vector defining the rotation axis
-
- Represents a point on the axis and is set as the origin of the
frame
- For easier input and faster
initialization of the velocity, use /INIV/AXIS/Keyword3/1 or
/INIV/AXIS/Keyword3/2.