Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Multi-Component High Aspect Ratio Turbulent Jets Issuing from Non-Planar
  Nozzles   Fundamental insight into the physics of buoyant gas dispersion from realistic
flow geometries is necessary to accurately predict flow structures associated
with hydrogen outflow from accidental leaks and the associated flammability
envelope. Using helium as an experimental proxy, turbulent buoyant jets issuing
from high-aspect-ratio slots on the side wall of a circular tube were studied
experimentally applying simultaneous particle image velocimetry (PIV) and
planar laser-induced fluorescence (PLIF) techniques. Two slots with an aspect
ratio of 10 were considered in this study. The effects of buoyancy, asymmetry,
jet densities and Reynolds numbers on the resulting flow structure were studied
in both vertical and horizontal orientations. Significant discrepancies were
found between the evolution of current realistic jets issuing from curved
surfaces and those conventional high-aspect-ratio jets originating from flat
surfaces. These realistic pipeline leak-representative jets were found to
deflect along the jet streamwise axis. It was found that increases in aspect
ratio caused a reduction in the angle of deflection, jet centreline decay rates
and the width growth on both velocity and scalar fields compared to their
non-planar round jet counterparts, most notably in the far field.

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The categories of this paper are: atom-ph
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The categories of this paper are: comp-gas
2
The categories of this paper are: math
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The categories of this paper are: ao-sci
13
The categories of this paper are: quant-ph
14
The categories of this paper are: math-ph
20
The categories of this paper are: acc-phys
6
The categories of this paper are: astro-ph
30
The categories of this paper are: q-alg
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The categories of this paper are: mtrl-th
5
The categories of this paper are: gr-qc
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The categories of this paper are: q-fin
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The categories of this paper are: solv-int
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The categories of this paper are: nucl-ex
7
The categories of this paper are: hep-th
0
The categories of this paper are: hep-ph