Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Passage of a shock wave through inhomogeneous media and its impact on a
  gas bubble deformation   The paper investigates shock-induced vortical flows within inhomogeneous
media of nonuniform thermodynamic properties. Numerical simulations are
performed using an Eularian type mathematical model for compressible
multi-component flow problems. The model, which accounts for pressure
non-equilibrium and applies different equations of state for individual flow
components, shows excellent capabilities for the resolution of interfaces
separating compressible fluids as well as for capturing the baroclinic source
of vorticity generation. The developed finite volume Godunov type computational
approach is equipped with an approximate Riemann solver for calculating fluxes
and handles numerically diffused zones at flow component interfaces. The
computations are performed for various initial conditions and are compared with
available experimental data. The initial conditions promoting a shock-bubble
interaction process include: weak to high planar shock waves with a Mach number
ranging from $1.2$ to $3$ and isolated cylindrical bubble inhomogeneities of
helium, argon, nitrogen, krypton and sulphur hexafluoride. The numerical
results reveal the characteristic features of the evolving flow topology. The
impulsively generated flow perturbations are dominated by the reflection and
refraction of the shock, the compression and acceleration as well as the
vorticity generation within the medium. The study is further extended to
investigate the influence of the ratio of the heat capacities on the interface
deformation.

27
The categories of this paper are: comp-gas
33
The categories of this paper are: plasm-ph
12
The categories of this paper are: nucl-th
22
The categories of this paper are: chao-dyn
13
The categories of this paper are: quant-ph
35
The categories of this paper are: mtrl-th
25
The categories of this paper are: patt-sol
10
The categories of this paper are: q-bio
36
The categories of this paper are: cmp-lg
4
The categories of this paper are: cond-mat
14
The categories of this paper are: math-ph
19
The categories of this paper are: eess
21
The categories of this paper are: adap-org
28
The categories of this paper are: alg-geom
37
The categories of this paper are: supr-con
24
The categories of this paper are: dg-ga