Use the Rotating Frame feature to exert fictitious forces on particles when computing their trajectories in a rotating frame of reference, including the centrifugal, Coriolis, and Euler forces.
In 2D, enter the coordinates of the Rotation axis base point rbp (SI unit: m) about which the frame rotates. The default is the origin
(0,0).
In 3D, select an option from the Axis of rotation list:
x-axis,
y-axis,
z-axis (the default), or
User defined. For
User defined, enter the coordinates of the
Rotation axis base point rbp (SI unit: m) about which the frame rotates. The default is the origin
(0, 0, 0). Then enter the components of the
Rotation axis direction eax (dimensionless). The default direction is parallel to the positive
z-axis,
(0, 0, 1). It is not necessary to enter a unit vector for the axis direction because the expression is automatically normalized.
Select an option from the Rotational direction list:
Counterclockwise (the default) or
Clockwise. The sense of rotation follows the standard right-hand rule; that is, if you curl the fingers on your right hand in the direction of the rotation, your thumb points in the direction of the axis of rotation (in 3D) or in the positive
z direction (in 2D).
Select an option from the Rotational frequency list:
Angular velocity (the default) or
Revolutions per time. For
Angular velocity enter the
Angular velocity magnitude Ω (SI unit: rad/s). The default is
0 rad/s. For
Revolutions per time enter the
Revolutions per time f (SI unit: Hz). The default is
0 rpm.
By default the Centrifugal force check box is selected. This means that the fictitious centrifugal force is exerted on the particles.
By default the Coriolis force check box is selected. This means that the fictitious Coriolis force, which arises when the particles have nonzero velocity in the rotating frame, is exerted on the particles.
By default the Euler force check box is selected. This means that the fictitious Euler force, which arises when the frame has nonzero angular acceleration, is exerted on the particles.
