Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Comments on nonlinear viscosity and Grad's moment method   It is shown that the steady unidirectional flow with vanishing heat flux
considered by B. C. Eu [Phys. Rev. E 65, 031202 (2002)], and earlier by Uribe
and Garcia--Colin [Phys. Rev. E 60, 4052 (1999)], is inconsistent with the
exact conservation laws of mass, momentum, and energy. The inconsistency does
not lie in the assumed symmetry properties of the flow but in the stationarity
assumption. The unsteady problem is considered and its solution from the
Boltzmann equation for Maxwell molecules is given.

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The categories of this paper are: math
16
The categories of this paper are: stat
6
The categories of this paper are: astro-ph
7
The categories of this paper are: hep-th
20
The categories of this paper are: acc-phys
0
The categories of this paper are: hep-ph
32
The categories of this paper are: atom-ph
1
The categories of this paper are: cs
37
The categories of this paper are: supr-con
12
The categories of this paper are: nucl-th
27
The categories of this paper are: comp-gas
10
The categories of this paper are: q-bio
15
The categories of this paper are: nucl-ex
34
The categories of this paper are: chem-ph
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The categories of this paper are: adap-org
14
The categories of this paper are: math-ph