Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Finite-Difference Implementation of Inviscid Separated Flows with
  Infinitely-Long Cusp-Ended Stagnation Zone around Circular Cylinder   The classical Helmholtz problem is applied for modelling and numerical
investigation of inviscid cusp-ended separated flow around circular cylinder.
Two coordinate systems are used: polar for initial calculations and parabolic
as topologically most suited for infinite stagnation zone. Scaling by the shape
of the unknown free line renders the problem to computational domain with fixed
boundaries. Difference schemes and algorithm for Laplace equation and for
Bernoulli integral are devised. A separated flow with drag coefficient $C_x=0$
like the so called ``critical'' flow is obtained. The pressure distribution on
the surface of cylinder and the detachment point compares quantitatively very
well with the predictions of the hodograph method.

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The categories of this paper are: plasm-ph
26
The categories of this paper are: bayes-an
8
The categories of this paper are: hep-ex
20
The categories of this paper are: acc-phys
7
The categories of this paper are: hep-th
19
The categories of this paper are: eess
12
The categories of this paper are: nucl-th
25
The categories of this paper are: patt-sol
10
The categories of this paper are: q-bio
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The categories of this paper are: q-alg
1
The categories of this paper are: cs
21
The categories of this paper are: adap-org
0
The categories of this paper are: hep-ph
14
The categories of this paper are: math-ph
6
The categories of this paper are: astro-ph
36
The categories of this paper are: cmp-lg