Journal of Statistical Physics

, Volume 140, Issue 3, pp 494–503 | Cite as

An Accurate Multi-level Finite Difference Scheme for 1D Diffusion Equations Derived from the Lattice Boltzmann Method

  • Shinsuke Suga


An accurate and unconditionally stable explicit finite difference scheme for 1D diffusion equations is derived from the lattice Boltzmann method with rest particles. The system of the lattice Boltzmann equations for the distribution of the number of the fictitious particles is rewritten as a four-level explicit finite difference equation for the concentration of the diffused matter with two parameters. The consistency analysis of the four-level scheme shows that the two parameters which appear in the scheme, the relaxation parameter and the amount of rest particles, can be determined such that the scheme has the truncation error of fourth order. Numerical experiments demonstrate the fourth-order rate of convergence for various combinations of model parameters.


Lattice Boltzmann method Multi-level explicit scheme Accuracy Stability 


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Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  1. 1.National Institute for Environmental StudiesTsukubaJapan

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