CFD: Recent Advances in Lattice Boltzmann Methods

Dear Colleagues,

This Special Issue is concerned with recent advances in the Lattice Boltzmann Method (LBM). The LBM has recently matured as a viable alternative to conventional Computational Fluid Dynamics (CFD) approaches that employ Finite Volume, Finite Difference or Finite Element approximations of continuum physics equations, mostly Navier-Stokes (NS). Whilst modeling essentially similar physics as classical continuum mechanics NS procedures, LBM features a number of advantages, particularly concerning data locality and parallel computing, but also in terms of stability and dispersion properties. As the method originates from the Boltzmann equation (being a superset of NS), multi-scale modeling (even up to specific kinetic turbulence models) is possible.

This Special Issue aims at highlighting the current state-of-the-art in the field of LBM and future research directions. Both submissions with an academic background as well as more application-oriented contributions are welcome. The addressed fields of research include, but are not limited to:

• Modeling aspects: Advanced collision operators beyond LBGK and MRT
• Improved boundary conditions: Curved boundaries, Second-order pressure BCs, Non-reflecting velocity and pressure boundary conditions
• Alternative gridding and grid-refinement strategies: Non-Cartesian grids, Overset grids, Compact interpolation, Stretched Cartesian grids
• Turbulence modeling: Conventional eddy-viscosity closure, Wall-adaptive LES, RANS/LES coupling, Wall functions, Implicit LES, Turbulent inflow generators
• Multiphase flows: High density and viscosity ratios, Hybrid perturbation models, Coupling to (inviscid) far-field methods, Singlephase free-surface models with and without surface tension
• Performance aspects: HPC implementations on large-scale clusters and/or GPUs, Interactive monitoring, Interactive steering
• Innovative large-scale applications of practical relevance

Dr. Christian F. Janßen
Guest Editor

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