Initially, this variable held a single reference turbine diameter value, but it was subsequently changed to contain the diameter of all wind turbines. The name change simply reflects it’s actual use.

Rather than a list of Vec3. This supports creating a layout from a dictionary of exported modules and classes rather than having to do the additional step of converting to Vec3.

This requires setting the comparison method in the TurbineGrid and Grid classes. While this can be done with
field(eq=cmp_using(eq=np.array_equal))
this adds a lot of additional code to the attribute declarations and makes them difficult to read. Holding off for now but I wanted to leave the test in place for future reference.

After switching the Grid coordinates from Vec3 to Numpy arrays, it turned out this wasn’t really used anymore.

While this was useful early in the v3 redesign, we’ve converged to a design where this is no longer used.