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GordMay · 09-07-2009, 12:10

Fluid* dynamics can get pretty complicated, and though I don’t know how, the forces (kinetic energy content) could certainly be resolved mathematically.

*Wind is moving air & currents are moving water - both are fluids, though air is compressible & water is not. The energy content of a moving fluid varies as the square of it's velocity - so we appear (to me) to be shooting at a moving target. I think the ratio will be different at differing base-line velocities.

The equation would have to include the relative densities (854:1) of water (±1025 kilogram per cubic metre) & air (±1.2 kg/m3), the effective projected areas (above & below water), the square of their respective velocities, some factor for compressibility/not ...

Where’s all of our scientists, mathemeticians, & engineers?

09-07-2009, 12:10	#7
GordMay Registered User Join Date: Mar 2003 Location: Thunder Bay, Ontario - 48-29N x 89-20W Boat: C.L.O.D. (Cruiser Living On Dirt) Posts: 12,582	Fluid* dynamics can get pretty complicated, and though I don’t know how, the forces (kinetic energy content) could certainly be resolved mathematically. Wind is moving air & currents are moving water - both are fluids, though air is compressible & water is not. The energy content of a moving fluid varies as the square of it's velocity - so we appear (to me) to be shooting at a moving target. I think the ratio will be different at differing base-line velocities. The equation would have to include the relative densities (854:1) of water (±1025 kilogram per cubic metre) & air (±1.2 kg/m3), the effective projected areas (above & below water), the square of their respective velocities, some factor for compressibility/not ... Where’s all of our scientists, mathemeticians, & engineers? __________________ Gord May ~~_/)_~~ (Gord & Maggie - "Southbound")* "If you didn't have time/$ to do it right in the first place, when will you get the time/$ to fix it?"