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Originally Posted by paconassa
Aerohead, care to explain that a bit more in detail?
With which cfd are you comfortable with?
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I'm putting words in aeroheads mouth here, but it's probably the primitve rendering algorithms. Traditional rendering techniques hit the wall, so to speak. You can't render a sufficiently large volume at sufficiently fine resolution to produce a viable result before the heat-death of Universe.
Personally, I look forward to more advanced software based on
OpenVDB. Instead of thinking outside the box, this makes the box fractal and extensible.
Edit: well that's inaccurate. Open VDB uses sparsely populated four-level binaries trees, not fractals; this means calculation is more focused more closely to the surface. And it uses bitmasking to have — in addition to pressure and velocity — for instance color (for smoke streamers) or viscosity (for raindrops and groundwater).