Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Implementation of mixed-dimensional models for flow in fractured porous
  media   Models that involve coupled dynamics in a mixed-dimensional geometry are of
increasing interest in several applications. Here, we describe the development
of a simulation model for flow in fractured porous media, where the fractures
and their intersections form a hierarchy of interacting subdomains. We discuss
the implementation of a simulation framework, with an emphasis on reuse of
existing discretization tools for mono-dimensional problems. The key
ingredients are the representation of the mixed-dimensional geometry as a
graph, which allows for convenient discretization and data storage, and a
non-intrusive coupling of dimensions via boundary conditions and source terms.
This approach is applicable for a wide class of mixed-dimensional problems. We
show simulation results for a flow problem in a three-dimensional fracture
geometry, applying both finite volume and virtual finite element
discretizations.

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The categories of this paper are: atom-ph
4
The categories of this paper are: cond-mat
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The categories of this paper are: comp-gas
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The categories of this paper are: dg-ga
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The categories of this paper are: nucl-ex
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The categories of this paper are: patt-sol
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The categories of this paper are: funct-an
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The categories of this paper are: q-alg
5
The categories of this paper are: gr-qc
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The categories of this paper are: q-bio
8
The categories of this paper are: hep-ex
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The categories of this paper are: eess
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The categories of this paper are: chem-ph
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The categories of this paper are: econ
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The categories of this paper are: math-ph
20
The categories of this paper are: acc-phys