Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A boundary value "reservoir problem" and boundary conditions for
  multi-moment multifluid simulations of sheaths   Multifluid simulations of plasma sheaths are increasingly used to model a
wide variety of problems in plasma physics ranging from global magnetospheric
flows around celestial bodies to plasma-wall interactions in thrusters and
fusion devices. For multifluid problems, accurate boundary conditions to model
an absorbing wall that resolves a classical sheath remains an open research
area. This work justifies the use of vacuum boundary conditions for absorbing
walls to show comparable accuracy between a multifluid sheath and lower moments
of a continuum-kinetic sheath.

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The categories of this paper are: math
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The categories of this paper are: cond-mat
35
The categories of this paper are: mtrl-th
11
The categories of this paper are: hep-lat
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The categories of this paper are: chao-dyn
12
The categories of this paper are: nucl-th
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The categories of this paper are: q-alg
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The categories of this paper are: hep-ex
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The categories of this paper are: econ
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The categories of this paper are: alg-geom
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The categories of this paper are: quant-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: gr-qc
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The categories of this paper are: hep-th
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The categories of this paper are: dg-ga
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The categories of this paper are: cmp-lg