I'm trying to do a simulation about the forces that work on a sailing boat
So the wind works on the sail under a certain angle and i want to find out
the direction the boat can travel in the water.
Is this possible?.
Pretty complicated sim.
In flow you can do everything above or below the water. Not at the surface and not coupled above and below.
So you could figure out the forces developed by the sail, and then make an estimate of speed and angle and run a flow over the bottom and couple them yourself to determine the driving force.
No it is not possible, because a major force on a boat is wave making resistance which is a consequence of the free surface (air/water interface) which cannot be simulated by SW.
But I think you could understand the basics by comparing the force balance above and below water
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