Physics – Condensed Matter – Soft Condensed Matter
Scientific paper
2010-10-06
Physics
Condensed Matter
Soft Condensed Matter
8 pages, 9 figures, DSFD 2009
Scientific paper
We analyze the Lattice Boltzmann method for the simulation of fluctuating hydrodynamics by Adhikari et al. [Europhys. Lett. 71, 473 (2005)] and find that it shows excellent agreement with theory even for small wavelengths as long as a stationary system is considered. This is in contrast to other finite difference and older lattice Boltzmann implementations that show convergence only in the limit of large wavelengths. In particular cross correlators vanish to less than 0.5%. For larger mean velocities, however, Galilean invariance violations manifest themselves through errors of a magnitude similar to those of the earlier implementations.
Kaehler Goetz
Wagner Alexander
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