Finitevolume versus streamingbased lattice Boltzmann algorithm for fluiddynamics simulations: A onetoone accuracy and performance study
Abstract
A finitevolume (FV) discretization method for the lattice Boltzmann (LB) equation, which combines high accuracy with limited computational cost is presented. In order to assess the performance of the FV method we carry out a systematic comparison, focused on accuracy and computational performances, with the standard streaming lattice Boltzmann equation algorithm. In particular we aim at clarifying whether and in which conditions the proposed algorithm, and more generally any FV algorithm, can be taken as the method of choice in fluiddynamics LB simulations. For this reason the comparative analysis is further extended to the case of realistic flows, in particular thermally driven flows in turbulent conditions. We report the successful simulation of highRayleigh number convective flow performed by a lattice Boltzmann FVbased algorithm with wall grid refinement.
 Publication:

Physical Review E
 Pub Date:
 February 2016
 DOI:
 10.1103/PhysRevE.93.023306
 arXiv:
 arXiv:1505.03271
 Bibcode:
 2016PhRvE..93b3306S
 Keywords:

 Physics  Fluid Dynamics;
 Physics  Computational Physics
 EPrint:
 15 pages, 14 figures (discussion changes, improved figure readability)