Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Vanishing mean volume velocity in isothermal isobaric diffusion of a
  binary fluid mixture   It is shown that in isothermal isobaric diffusion of a binary fluid mixture
the mean volume velocity vanishes in the linear regime, independent of the
equation of state. The partial specific volumes of the two components are
uniform and constant in the process of mutual diffusion. The properties lead to
a simple derivation of the de Groot-Mazur thermodynamic factor in the diffusion
coefficient. The properties also imply that the diffusive volume flux defined
by Brenner is proportional to the mass current density, and is therefore not a
quantity of independent interest.

35
The categories of this paper are: mtrl-th
19
The categories of this paper are: eess
7
The categories of this paper are: hep-th
24
The categories of this paper are: dg-ga
12
The categories of this paper are: nucl-th
26
The categories of this paper are: bayes-an
18
The categories of this paper are: econ
6
The categories of this paper are: astro-ph
5
The categories of this paper are: gr-qc
13
The categories of this paper are: quant-ph
10
The categories of this paper are: q-bio
33
The categories of this paper are: plasm-ph
27
The categories of this paper are: comp-gas
34
The categories of this paper are: chem-ph
28
The categories of this paper are: alg-geom
15
The categories of this paper are: nucl-ex