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Édouard WALTHER Rachid BENNACER Caroline DE SA


This work is centered on the safe usage of the Lattice Boltzmann Method (LBM) for two-dimensional pure diffusion. The basics of the LBM for pure diffusion are first elucidated using a new definition given in the paper. The oscillating behaviour and safe conditions of use are then explored in the case of homogeneous material as well as heterogeneous materials with circular and plane interfaces. As a conclusion, the range of valid relaxation factors is given for a correct use of the LBM.

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WALTHER, Édouard; BENNACER, Rachid; DE SA, Caroline. LATTICE BOLTZMANN METHOD AND DIFFUSION IN MATERIALS WITH LARGE DIFFUSIVITY RATIOS. Thermal Science, [S.l.], mar. 2017. ISSN 2334-7163. Available at: <>. Date accessed: 24 june 2017. doi:
Received 2017-03-03
Accepted 2017-03-13
Published 2017-03-13


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