Geodesy

Quantum mechanics

Computational science

Generic programming

Benchmark (surveying)

Implementation

Open source

Data structure

Set (abstract data type)

Parallel computing

Computer science

Acoustics

Code (set theory)

Statistical physics

Lattice (music)

Modular design

Software

Physics

Source code

Mathematics

Geography

Supercomputer

Programming language

Python (programming language)

Mechanics

Lattice Boltzmann methods

Extensibility

Computers & Mathematics with Applications

We present the OpenLB package, a C++ library providing a flexible framework for lattice Boltzmann simulations. The code is publicly available and published under GNU GPLv2, which allows for adaption and implementation of additional models. The extensibility benefits from a modular code structure achieved e.g. by utilizing template meta-programming. The package covers various methodical approaches and is applicable to a wide range of transport problems (e.g. fluid, particulate and thermal flows). The built-in processing of the STL file format furthermore allows for the simple setup of simulations in complex geometries. The utilization of MPI as well as OpenMP parallelism enables the user to perform those simulations on large-scale computing clusters. It requires a minimal amount of dependencies and includes several benchmark cases and examples. The package presented here aims at providing an open access platform for both, applicants and developers, from academia as well as industry, which facilitates the extension of previous implementations and results to novel fields of application for lattice Boltzmann methods. OpenLB was tested and validated over several code reviews and publications. This paper summarizes the findings and gives a brief introduction to the underlying concepts as well as the design of the parallel data structure.

OpenLB—Open source lattice Boltzmann code