Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: LEoPart: a particle library for FEniCS   This paper introduces LEoPart, an add-on for the open source finite element
software library FEniCS to seamlessly integrate Lagrangian particle
functionality with (Eulerian) mesh-based finite element (FE) approaches.
LEoPart - which is so much as to say: `Lagrangian-Eulerian on Particles' -
contains tools for efficient, accurate and scalable advection of Lagrangian
particles on arbitrary polyhedral meshes. In addition, LEoPart comes with
several projection operators for exchanging information between the scattered
particles and the mesh and \textit{vice versa}. These projection operators are
based on a variational framework, which allows extension to high-order
accuracy. In particular, by implementing a dedicated PDE-constrained
particle-mesh projection operator, LEoPart provides all the tools for
diffusion-free advection, while simultaneously achieving optimal convergence
and ensuring conservation of the projected particle quantities on the
underlying mesh. A range of numerical examples that are prototypical to passive
and active tracer methods highlight the properties and the parallel performance
of the different tools in LEoPart. Finally, future developments are identified.
The source code for LEoPart is actively maintained and available under an open
source license at https://bitbucket.org/jakob_maljaars/leopart.

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The categories of this paper are: alg-geom
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The categories of this paper are: nlin
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The categories of this paper are: solv-int
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The categories of this paper are: hep-lat
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The categories of this paper are: bayes-an
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The categories of this paper are: stat
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The categories of this paper are: hep-ex
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The categories of this paper are: nucl-ex
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The categories of this paper are: dg-ga
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The categories of this paper are: q-bio
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The categories of this paper are: supr-con
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The categories of this paper are: cond-mat
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The categories of this paper are: plasm-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: q-fin
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The categories of this paper are: chao-dyn