Nektar++: An efficient h to p finite element framework
Nektar++ is a tensor product based finite element package designed to allow one to construct efficient classical low polynomial order h-type solvers (where h is the size of the finite element) as well as higher p-order piecewise polynomial order solvers. The framework currently has the following capabilities:
- Representation of one, two and three-dimensional fields as a collection of piecewise continuous or discontinuous polynomial domains.
- Segment, plane and volume domains are permissible, as well as domains representing curves and surfaces (dimensionally-embedded domains).
- Hybrid shaped elements, i.e triangles and quadrilaterals or tetrahedra, prisms and hexahedra.
- Both hierarchical and nodal expansion bases.
- Continuous or discontinuous Galerkin operators.
- Cross platform support for Linux, Mac OS X and Windows.
The framework comes with a number of solvers and also allows one to construct a variety of new solvers. Example solvers and tutorials on their use are documented in the Nektar++ user guide, available from the Downloads page.
Our current goals are to develop:
- Automatic auto-tuning of optimal operator implementations based upon not only h and p but also hardware considerations and mesh connectivity.
- Temporal and spatial adaption.
- Features enabling evaluation of high-order meshing techniques.
Development team Current developers working on Nektar++.
Acknowledgments Funding bodies supporting this work.
Details of the Nektar++ workshop 2015 can be found under https://www.nektar.info/wiki/NektarWorkshop2015
A number of internal pages for developers are available here.