Its entirely correlation based on local quantities. The major part is done, in 2015 it was just expanded with a crossflow term that helps a lot where bodies with strong crossflow components would trip into turbulence earlier. I can try it, but I suck at programming, so it would probably just be vibecoding, and I dont know how well the OpenFOAM people like that. Apart from that, its great when you have wings that are swept, as these exhibit a strong crossflow that dominates the transition mode.