"How to calculate moments of two ships in motion conditions?"
 

Hello everyone,

I am currently working on applying motion to two self-propulsion ships sailing in water. I have used DFBI (Dynamic Fluid Body Interaction) as the motion model and translation and rotation as the reference frames for both the motion and propeller rotation. However, I have encountered an issue when attempting to calculate the moment for each ship in STAR-CCM+ as it gives me an error when I try to set up the moment report. note that I have not considered the current and wind speed in the Volume of Fluid (VOF) simulation as the two ships have different speeds.

I would greatly appreciate any assistance or guidance on how to calculate the moment for each ship in this scenario. Thank you in advance.

How many bodies do you have in the DFBI definition?

I have two bodies in motion condition

I need first to applay DFBI in both but I couldn't