How to find hydrodynamic lift from lift coefficient vessel? on planing

Hi! I'm using savitsky's method to find the equilibrium trim angle for a vessel and was wondering how I can calculate the hydrodynamic lift generated? I already have the lift coefficient.

Thanks for any help!

 

How is the lift coefficient defined? What reference(s) are you using for Savitsky's method?

 

Lift coefficient = Δ/((ro/2)*V^2*b^2). From Savitsky's '64 paper.

 

Re-arranging that formula results in:
Δ = Lift coefficient*((ro/2)*V^2*b^2)

 

Ah ok, I thought Δ was equal to the weight of the vessel. But it is in fact the lift?

 

Only if lift equals displacement. Is that consistent with Savitsky's assumptions?

 

Delta in the Savitsky formula is the vertical component of the hydrodynamic force (a force due to fluid dynamic pressure) acting on a prismatic hull moving through the surface of an inviscid fluid. It has to be added to the hydrostatic (buoyancy) component to obtain the total vertical lift.

 

Reagrding hull performance calculations, has anyone had any experience with the software product from

http://www.hawaii-marine.com/templates/Products/Savitsky/description.htm#Inputs/Outputs