Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On deriving nonreflecting boundary conditions in generalized curvilinear
  coordinates   In this work, nonreflecting boundary conditions in generalized
three-dimensional curvilinear coordinates are derived, relying on the original
analysis that was done in Cartesian two-dimensional coordinates by Giles (AIAA
Journal, 28.12, 2050-2058, 1990). A thorough Fourier analysis of the linearized
Euler equation is performed to determine the eigenvalues and the eigenvectors
that are then used to derive the appropriate inflow and outflow boundary
conditions. The analysis lacks rigorous proof of the well-posedness in the
general case, which is open to investigation (a weak assumption is introduced
here to complete the boundary conditions). The boundary conditions derived here
are not tested on specific applications.

26
The categories of this paper are: bayes-an
37
The categories of this paper are: supr-con
13
The categories of this paper are: quant-ph
21
The categories of this paper are: adap-org
15
The categories of this paper are: nucl-ex
35
The categories of this paper are: mtrl-th
4
The categories of this paper are: cond-mat
28
The categories of this paper are: alg-geom
3
The categories of this paper are: physics
10
The categories of this paper are: q-bio
6
The categories of this paper are: astro-ph
16
The categories of this paper are: stat
0
The categories of this paper are: hep-ph
9
The categories of this paper are: nlin
25
The categories of this paper are: patt-sol
33
The categories of this paper are: plasm-ph