A parallelisation concept for a multi-physics lattice Boltzmann prototype based on hierarchical grids

作者：Freudiger Soeren^*; Hegewald Jan; Krafczyk Manfred

来源：Progress in Computational Fluid Dynamics, 2008, 8(1-4): 168-178.

DOI：10.1504/PCFD.2008.018087

• lattice Boltzmann method
• parallel computation
• distributed systems
• non-uniform grid
• MPI
• metis
• tandem cylinder

This paper introduces a generalised parallelisation concept for lattice Boltzmann (LB) simulations. Our main goal was to combine two approaches to speed up LB computations: parallelisation combined with an efficient implementation and utilisation of non-uniform tree-type Cartesian grids. A clear separation of data with different semantics (i.e., topology, geometry, physical quantities) to facilitate expandability for multi-physics applications is another key aspect of this work. In addition, an abstract rule set was developed which can handle e.g., specific user definable discretisation stencils. Finally we simulated a tandem cylinder flow to validate the method as well as the implementation in 2D.

• 出版日期2008