DavlexDesign wrote:G'day ???
I didn't want to say geek.
Now that's something that's really nice,
Would you have a problem with me maybe using some of this for my planet engine (river dynamics mainly) ?
I have a river system in there already, but something like this could just make the difference for the look and feel of the rivers and water falls.
cybereality wrote:Very cool. Have you thought about doing any volume rendering to make it look more like water?
DanielSefton wrote:Cool! I also think that would look really effective as lava
koirat wrote:Do you know how precise is this simulation compared to the real life avalanche.
Nefbrethilion wrote:Very interesting, and it was nice to see your avalanche simulation! I guess you can just render the particles as point sprites, just like in the first movie, to get this result? That's a benefit too: you don't really need to extract a surface
Nefbrethilion wrote:The viscosity would be higher when the shear stress is higher, meaning that particles close to the terrain will slow down the movement of upper particles, which will experience less friction and thus flow less viscuous. Do I understand this right?
Nefbrethilion wrote:For the accuracy, SPH makes a lot of simplifications and will never, ever be able to predict flows. The biggest simplifications is ignoring all forces applied by particles "too far away". This speeds up the simulations incredibly but you lose detail. The application of SPH to fluids has been proposed originally by Muller, and is useful to create visual pleasing fluid like effects in realtime (exactly what we want in games or other interactive applications!). Don't forget that the method for avalanches here is not physically accurate either: it is a way to tweak the fluid simulation to look like an avalanche. Which is very clever, but don't "trust" these simulations to predict anything
Again, congrats with your results, I'm impressed!
I think the new CUDA fluid sample from NVIDIA (also using SPH) is very interesting. They use a very lightweight (relatively) screen-space rendering technique which seems to produce very good results.
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