A Non-uniform Staggered Cartesian Grid approach for Lattice-Boltzmann method

• We propose a numerical approach based on the Lattice-Boltzmann method (LBM) for dealing with mesh refinement of Non-uniform Staggered Cartesian Grid. We explain, in detail, the strategy for mapping LBM over such geometries. The main benefit of this approach, compared to others, consists of solving all fluid units only once per time-step, and also reducing considerably the complexity of the communication and memory management between different refined levels. Also, it exhibits a better matching for parallel processors. To validate our method, we analyze several standard test scenarios, reaching satisfactory results with respect to other stateof-the-art methods. The performance evaluation proves that our approach not only exhibits a simpler and efficient scheme for dealing with mesh refinement, but also fast resolution, even in those scenarios where our approach needs to use a higher number of fluid units.

Subject headings

TEKNIK OCH TEKNOLOGIER  -- Elektroteknik och elektronik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)

Keyword

Lattice-Boltzmann method

Mesh refinement

Multicore

Parallel algorithms

Kinetic theory

Memory management units

Mesh generation

Numerical methods

Efficient schemes

Lattice Boltzmann method

Lattice boltzmann methods (LBM)

Multi core

Numerical approaches

Parallel processor

State-of-the-art methods

Computational fluid dynamics

Publication and Content Type

ref (subject category)

kon (subject category)