Pseudo-fluids in Chipmunk Playground

If you have lots of particles and not much friction, it starts to behave a bit like a fluid.

This didn't happen in real time; by the end of the long section each frame took about six seconds to calculate. There were about 3000-4000 particles in that scene.

Chipmunk Playground uses the excellent Chipmunk Physics, which can be found at http://wiki.slembcke.net/main/published/Chipmunk , along with more cool videos and source code.

Category:

Science & Technology

Tags:

• chipmunk
• 2d
• physics
• playground
• water
• dynamics
• fluid
• simulation
• particle
• mac

[sourpop1034]

how do i download this i tried but it said windows cannot open this file HELP!

[maximile]

It hasn't been released yet, and when it is it'll be Mac only. Check the Chipmunk site for other 2D physics things, or Google for phun or something.

[fingerprint211b]

Nice work! Tell me, how hard does this reflect on FPS?

[maximile]

Pretty hard; once you get up to around 4000 circles it takes around six seconds per frame.

[MrCalhoun]

There is even a type of nuclear power plants basing upon this effect. The so called PBR (pebble bed reactor) is basing on small spheres in which nuclear fuel is in. Burnt out spheres sink to the ground during the hotter spheres rise to the top of the reactor. I think it would be really interesting to simulate this process in this physics engine.

[maximile]

Thanks; I'd never heard of that. Just been reading about it on Wikipedia.

[z3ziman]

after all liquid is composed of eeny teeny bits of particles..........

[Terabytekit]

too heavy

[realflow100]

@maximile hey high negative friction makes it very viscosity like but too high and particles explode

[OniLink10]

I wonder if viscosity can be simulated by setting the friction coefficient to some function of viscosity. It would be interesting...

[caqtv]

@chachacha3nOs Welcome to 3 years ago, did you know that computers get better over time?

[chachacha3nOs]

nvidia physX is better and realtime

[realflow100]

what thats stupid how do all these people have it

[LaughsWontHurt]

Me neither :(

[PKarklouse]

i have recently downloaded but i don't know how to start it >:-(

[jojodi]

Fluids are just solids that deform continuously under shearing forces, so low friction circles/sphere is a kind of approximation. Works out well enough. Check out my stuff for another particle-based approach.

[GravityExNihilo]

Yes, it will work on the iPhone (I've done it myself) but, expectedly so, you're limited on the number of shapes you can have. It doesn't look nearly as organic as this though.