Lubachevsky–Stillinger algorithm: Difference between revisions

Revision as of 16:28, 9 May 2011

Revision as of 12:23, 12 May 2011

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(zero outside the particle, infinity at or inside) with

a piece-wise constant [[force]] [[potential]]. The LSA

thus modified would approximateapproximately simulate

a [[molecular dynamic simulationdynamics]] with continuous

short range particle-particle force interaction.

External [[force fields]], such as [[gravitation]], can be

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As the calculations of the LSA progress,

the collision rates of particles may and usually do

increase. without a bound.

Still the LSA successfully achievesapproaches the jamming state

as long as those rates remain comparable among all

the particles, except for the rattlers.

the

particles, except for the rattlers.

(Rattlers experience consistently low collision rates. This property allows one to detect rattlers.)

However,

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The stuck-in-time failure

can also occur when using the LSAsimulating

just for simulating a granular flow,

without the particle compression

or expansion.

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at collisions is low

(and hence the collisions are inelastic).

The failure is not specific to justonly the LSA algorithm.

Techniques to avoid the failure have

been proposed.