Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Generation of parasitic axial flow by drift wave turbulence with broken
  symmetry: Theory and experiment   Detailed measurements of intrinsic axial flow generation parallel to the
magnetic field in the controlled shear decorrelation experiment linear plasma
device with no axial momentum input are presented and compared to theory. The
results show a causal link from the density gradient to drift-wave turbulence
with broken spectral symmetry and development of the axial mean parallel flow.
As the density gradient steepens, the axial and azimuthal Reynolds stresses
increase and radially sheared azimuthal and axial mean flows develop. A
turbulent axial momentum balance analysis shows that the axial Reynolds stress
drives the radially sheared axial mean flow. The turbulent drive (Reynolds
power) for the azimuthal flow is an order of magnitude greater than that for
axial flow, suggesting that the turbulence fluctuation levels are set by
azimuthal flow shear regulation. The direct energy exchange between axial and
azimuthal mean flows is shown to be insignificant. Therefore, the axial flow is
parasitic to the turbulence-zonal flow system and is driven primarily by the
axial turbulent stress generated by that system. The non-diffusive, residual
part of the axial Reynolds stress is found to be proportional to the density
gradient and is formed due to dynamical asymmetry in the drift-wave turbulence.

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The categories of this paper are: cmp-lg
18
The categories of this paper are: econ
29
The categories of this paper are: funct-an
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The categories of this paper are: eess
8
The categories of this paper are: hep-ex
0
The categories of this paper are: hep-ph
5
The categories of this paper are: gr-qc
13
The categories of this paper are: quant-ph
7
The categories of this paper are: hep-th
6
The categories of this paper are: astro-ph
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The categories of this paper are: adap-org
10
The categories of this paper are: q-bio
12
The categories of this paper are: nucl-th
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The categories of this paper are: nucl-ex
4
The categories of this paper are: cond-mat
26
The categories of this paper are: bayes-an