Aboria implements an expressive Domain Specific Language (DSL) in C++ for specifying expressions over particles and their neighbours in multidimensional space. The library is header-only and based on expression templates for efficient and natural expression of mathematical expressions applied over the particles.

The particle data is contained in a C++ Standard Template Library (STL) compatible container. Each particle has a n-dimensional position and user-defined data-package (for other variables such as velocity, density etc) and is optionally embedded within a hypercube spatial domain (for neighbourhood searches) that can be periodic or not. Users can implement standard C++ and STL algorithms directly on the particle data, or use the expression template API to naturally form non-linear operators over the particle set.

The motivation behind Aboria is to provide a useful library for implementing particle-based numerical algorithms, for example Molecular Dynamics, Radial Basis Functions or Smoothed Particle Hydrodynamics.

Aboria is distributed under a BSD 3-Clause License, see LICENCE for more details. Aboria is supported by Maria Bruna's project "Sustainable software for reaction­diffusion processes of interacting particles", funded by the John Fell Fund (grant BLD10370) and the St John’s College Research Centre (grant 21138701).