Defining the Motion of the Fluid Domain

When defining the 6-DOF body, you applied the DFBI motion (both prescribed and induced by waves) to the fluid region near the hull. To make sure that the hull region remains within the background fluid domain in the boat advancing direction, you set the main fluid domain to follow the translational motion of the hull along the X axis.

  1. To create the DFBI Follow Motion, right-click the DFBI > 6-DOF Bodies > Body 1 node and select Create > Follow Motion.
  2. Select the Tools > Motions > Body 1-Follow-Motion node and only activate X Motion.
  3. Select the Regions > Domain > Physics Values > Motion Specification node and set Motion to Body 1-Follow-Motion.
  4. Save the simulation.