Multispeed models in off-lattice Boltzmann simulations

Journal article (2008)
Department
Process and Energy (Mechanical, Maritime and Materials Engineering) (TU Delft)
Copyright: © 2008 The Author(s); American Physical Society
Lattice Boltzmann method
More Info
expand_more

Published Date

28-02-2008

Reuse Rights

Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.

Source:

Physical Review E, 77 (2 pt. 2), 2008

ISSN:

1539-3755

Faculty

Mechanical, Maritime and Materials Engineering

Department

Process and Energy

Abstract

The lattice Boltzmann method is a highly promising approach to the simulation of complex flows. Here, we realize recently proposed multispeed lattice Boltzmann models [S. Chikatamarla et al., Phys. Rev. Lett. 97 190601 (2006)] by exploiting the flexibility offered by off-lattice Boltzmann methods. The approach is based on the general characteristic-based algorithm for off-lattice Boltzmann simulations that preserves all appealing properties of the standard lattice Boltzmann method while extending the method to unstructured grids. We show that the use of multispeed models indeed gives rise to major improvements in accuracy. The suggested approach thus renders truly large-scale off-lattice Boltzmann computations practical.

Files

Bardow_2008.pdf
(pdf | 0.133 Mb)