buoyancy in water

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buoyancy in water

Postby ShnitzelKiller » Tue Sep 08, 2009 5:05 am

If you load the float sink file in "lessons", and pull the wood down to the bottom, it won't float up again.

The fluid sim has a way to go before it's like oe-cake's.
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Re: buoyancy in water

Postby Chronos » Tue Sep 08, 2009 10:18 am

maybe the water is really dense, and the wood cant get up due to the pressure :o
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Re: buoyancy in water

Postby admin » Tue Sep 08, 2009 12:25 pm

Algodoo has fixed particle size for now, so it really depends on the scale you work on, how well the interaction between bodies and fluid will work. When the fluid particles are too few and too large compared to the body, the particles and the body can become a bit entangled simply because particles have a hard time being squeezed pass the body as it moves.

Adaptive resolution is in our roadmap as well as many other improvements that will be made available as free updates (don't ask when!).

oecake is a lovely little program. It fixates the scale in a different way, and therefore it can easier guarantee that size of the fluid elements work better with the size of other bodies.

On the other hand, Algodoo, is quite strong at doing things on many different scales.Therefore you can model things on the scale of many meters in the same scene as things of much smaller scale.

The fluid simulation method in Algodoo has a patent pending and is also scientifically novel in the way it ensures incompressibility of the fluid. This means that you can, for example, build a little ship or raft full of mechanical gadgets (and stable piles) and have this floating on top of the fluids in Algodoo. This functionality is pretty unique, and as far as we know does not even exist in technical/scientific simulation software used in the industry at price levels of $100.000 per license...
We actually have these fluids running in 3D too, where we believe they will be a bit of a small revolution. Stay tuned!

However, physics simulation is a moving target. Physics has been the driving force for computers, processors and software for 50 years, be it in scientific and technical computing or computer games. I'm sure this will continue not just for another 50 years, but surely for another 500 years too... That's why we love what we do!
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Re: buoyancy in water

Postby ShnitzelKiller » Tue Sep 08, 2009 8:14 pm

At the exponential rate at which the rate at which the rate at which the rate we are draining our resources is increasing, to water lawns, fuel planes to ship dead bodies back to their homeland, and driving to next-door neighbors in enormous SUVs, fifty years is probably all we've got before we run out of drinkable water at the least.

But right now you're saying that in order for buoyancy to work properly, I've got to use a lot of water particles at a huge scale... well, the lag is considerable.
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Re: buoyancy in water

Postby admin » Wed Sep 09, 2009 7:53 am

I don't say it have to be a huge scale - but good enough.
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Re: buoyancy in water

Postby Chronos » Wed Sep 09, 2009 9:09 am

admin wrote:Algodoo has fixed particle size for now, so it really depends on the scale you work on, how well the interaction between bodies and fluid will work. When the fluid particles are too few and too large compared to the body, the particles and the body can become a bit entangled simply because particles have a hard time being squeezed pass the body as it moves.

wait, so i was actually right? :shock:
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