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Solid Body Motions

With the Solid body motion feature movement of the entire simulation domain as a whole can be simulated. Solid body montion is currently available in transient incompressible single or multiphase flow simulations only.


Solid body motion does not require any special mesh preparation as the motion is applied to the entire domain. However, it is important to make sure that the mesh is of high quality so the prescribed motion can be resolved in accurately.

Solid body motion setup

In the simulation tree, navigate to Advanced Concepts and add a solid body motion. Several motion types are supported:

  • Linear motion
    The prescribed motion is a linear motion defined by a velocity vector.
  • Oscillating rotating motion
    This type allows an oscillating motion around the rotation center with a prescribed amplitude vector and an angular velocity.
  • Oscillating linear motion
    This type defines an oscillating linear motion using an amplitude and angular velocity.
  • Rotating motion
    Can be used to define rotation of the domain. This motion type also supports time-dependent angular velocity changes.
  • Ship design analysis (SDA)
    This type mimics the movement of a floating body by specifying sinusoidal roll, heave, and sway components of motion.
  • Six degree-of-freedom motion
    This motion type allows complete freedom of translation and rotation. A detailed setup guide can be found here.
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