Hello Jake & Flounder,
The suction effec which drawn down a deep slender hull is yet a well proven effect that has been shown by tank tests on ORMA 60 tri amas and by CFD ( Computations ).
This a phenomenon which is called "DYNAMIC SINKAGE" by naval hydrodynamicists and that corresponds roughly to an additionnal 20% of the initial weight over 18 kt. Now, if a standard Tornado can hold a 340 lbs Side-Force, the trigonometrically associated Down-Force at 12° heel is 340 x tan( 12° ) = 72 lbs, which means 10% of the 716 lbs of initial displacment of the crew...so Jake, you can see that "suction effect", far from negligible, is TWICE the DOWN-FORCE effect...
About Bernouilli's law, it simply states that in uncompressible fluids like water, when you accelerate flow, pressure falls and when you brake it, pressure rises...relatively to the ambient pressure, which is in most cases the atmospheric pressure at 100.000 Pascals = 14 psi. Bernouilli is not dependant of upper side versus lower side, but a general law...
It's the physics of what I called the 1st domain, immediate vicinity of free surface, which don't behave like aerodynamic stuff, you're right Flounder, suctions dissapeared sometimes and things could plane...other will never...
FRIENDLY,
Frenchie
