Lattice Boltzmann simulations on irregular grids: introduction of the NATriuM library. The lattice Boltzmann method is a modern approach to simulate fluid flow. In its original formulation, it is restricted to regular grids, second-order discretizations, and a unity CFL number. This paper describes our new off-lattice Boltzmann solver NATriuM, an extensible and parallel C++ code to perform lattice Boltzmann simulations on irregular grids. NATriuM also allows high-order spatial discretizations and non-unity CFL numbers to be used. We demonstrate how these features can efficiently decrease the number of grid points required in a simulation and thus reduce the computational time, compared to the standard lattice Boltzmann method. We detail the implementation of a recently proposed semi-Lagrangian lattice Boltzmann method and prove its efficiency in comparisons to other state-of-the-art off-lattice Boltzmann schemes.
Keywords for this software
References in zbMATH (referenced in 3 articles , 1 standard article )
Showing results 1 to 3 of 3.
- Janßen, Christian (ed.); Krafczyk, Manfred (ed.); Luo, Li-Shi (ed.): Preface: Mesoscopic methods in engineering and science (2020)
- Krämer, Andreas; Wilde, Dominik; Küllmer, Knut; Reith, Dirk; Foysi, Holger; Joppich, Wolfgang: Lattice Boltzmann simulations on irregular grids: introduction of the NATriuM library (2020)
- Safa, Raziyeh; Soltani Goharrizi, Ataallah; Jafari, Saeed; Jahanshahi Javaran, Ebrahim: Simulation of particles dissolution in the shear flow: a combined concentration lattice Boltzmann and smoothed profile approach (2020)