Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Buoyant turbulent mixing in shear layers   Buoyancy effects in unstably stratified mixing layers express themselves
through gravity currents of heavy fluid which propagate in an ambient lighter
fluid. These currents are encountered in numerous geophysical flows, industrial
safety and environmental protection issues. During transition to turbulence a
strong distortion of the separating interface between regions containing
`heavy' or `light' fluid arises. The complexity of this interface will be used
to monitor the progress of the mixing. We concentrate on the enhancement of
surface-area and `surface-wrinkling' of the separating interface as a result of
gravity-effects. We also show that this process can be simulated quite
accurately using large-eddy simulation with dynamic subgrid modeling. However,
the subgrid resolution, defined as the ratio between filter-width Delta and
grid-spacing h, should be sufficiently high to avoid contamination due to
spatial discretization error effects.

16
The categories of this paper are: stat
36
The categories of this paper are: cmp-lg
28
The categories of this paper are: alg-geom
8
The categories of this paper are: hep-ex
30
The categories of this paper are: q-alg
15
The categories of this paper are: nucl-ex
20
The categories of this paper are: acc-phys
13
The categories of this paper are: quant-ph
1
The categories of this paper are: cs
5
The categories of this paper are: gr-qc
6
The categories of this paper are: astro-ph
22
The categories of this paper are: chao-dyn
18
The categories of this paper are: econ
23
The categories of this paper are: solv-int
11
The categories of this paper are: hep-lat
4
The categories of this paper are: cond-mat