A perfectly matched layer technique for lattice Boltzmann method

Auteurs-es

  • Alireza Najafi-Yazdi Dept. of Mech. Eng., McGill University, 817 Sherbrooke St. West, Montreal, QC H3A 2K6, Canada
  • Luc Mongeau Dept. of Mech. Eng., McGill University, 817 Sherbrooke St. West, Montreal, QC H3A 2K6, Canada

Mots-clés :

Distribution functions, Drop formation, Dynamics, Electromagnetic wave absorption, Energy absorption, Flow of fluids, Fluid dynamics, Magnetic fields, Phase space methods, Absorbing layers, Boltzmann methods, Computational techniques, Electro-magnetic fields, Equilibrium distribution functions, Gaussian pulse, Incident waves, Lattice-Boltzmann methods, Navier-stokes, Numerical simulations, Parallel implementations, Perfectly matched layer techniques, Perfectly matched layers, Phase spaces

Résumé

A boundary condition was developed based on the perfectly matched layer (PML) concept introduced by Berenger, for numerical simulations of electro-magnetic fields. The PML was developed with the help of the Lattice Boltzmann Method (LBM), which is a computational technique in fluid dynamics. The PML can creates absorbing layers for the theoretically non-reflective for any angle and frequency of incident wave. The LBM has proved some advantages over conventional Navier-Stokes schemes such as ease of parallel implementation, where the hydrodynamics properties as density, momentum, kinetic energy, and others can be obtained by different moments of the equilibrium distribution function in the phase space. The study showed excellent results in all cases, including the propagation of a Gaussian pulse.

Fichiers supplémentaires

Publié-e

2008-12-01

Comment citer

1.
Najafi-Yazdi A, Mongeau L. A perfectly matched layer technique for lattice Boltzmann method. Canadian Acoustics [Internet]. 1 déc. 2008 [cité 3 mai 2026];36(4):46-7. Disponible à: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/2105

Numéro

Vol. 36 No. 4 (2008)

Rubrique

Articles techniques

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