Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Boundary conditions for a capillary fluid in contact with a wall   Contact of a fluid with a solid or an elastic wall is investigated. The wall
exerts molecular forces on the fluid which is locally strongly nonhomogeneous.
The problem is approached with a fluid energy of the second gradient form and a
wall surface energy depending on the value of the fluid density at the contact.
>From the virtual work principle are obtained limit conditions taking into
account the fluid density, its normal derivative to the wall and the curvature
of the surface

17
The categories of this paper are: q-fin
24
The categories of this paper are: dg-ga
31
The categories of this paper are: ao-sci
36
The categories of this paper are: cmp-lg
28
The categories of this paper are: alg-geom
25
The categories of this paper are: patt-sol
15
The categories of this paper are: nucl-ex
32
The categories of this paper are: atom-ph
11
The categories of this paper are: hep-lat
9
The categories of this paper are: nlin
26
The categories of this paper are: bayes-an
5
The categories of this paper are: gr-qc
22
The categories of this paper are: chao-dyn
7
The categories of this paper are: hep-th
23
The categories of this paper are: solv-int
35
The categories of this paper are: mtrl-th