SciCADE 2013
International Conference on Scientific Computation and Differential Equations
September 16-20, 2013, Valladolid (Spain)

Invited Talk

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Challenges in boundary conditions for CFD simulations using lattice Boltzmann methods

S. Izquierdo and N. Fueyo

Abstract
The lattice Boltzmann (LB) method has reached enough maturity to be an alternative for current industrial CFD simulations. However, one of the essential points of the method, the boundary conditions, is the subject of a variety of approaches, which are not always consistent with the target macroscopic equations. We present a systematic review of these approaches to define boundary conditions in LB methods. Two partially-solved challenges are analyzed: suppression of reflecting waves in steady and unsteady simulations, and implementation of Neumann boundary conditions. Based on their conclusions we will discuss how to provide practical solutions for present challenges, such as the definition of boundary conditions for complex fluids.

Organized by         Universidad de Valladolid     IMUVA