Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Lagrangian coherent structures and inertial particle dynamics   In this work we investigate the dynamics of inertial particles using
finite-time Lyapunov exponents (FTLE). In particular, we characterize the
attractor and repeller structures underlying preferential concentration of
inertial particles in terms of FTLE fields of the underlying carrier fluid.
Inertial particles that are heavier than the ambient fluid (aerosols) attract
onto ridges of the negative-time fluid FTLE. This negative-time FTLE ridge
becomes a repeller for particles that are lighter than the carrier fluid
(bubbles). We also examine the inertial FTLE (iFTLE) determined by the
trajectories of inertial particles evolved using the Maxey-Riley equations with
non-zero Stokes number and density ratio. Finally, we explore the low-pass
filtering effect of Stokes number. These ideas are demonstrated on
two-dimensional numerical simulations of the unsteady double gyre flow.

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The categories of this paper are: cs
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The categories of this paper are: eess
27
The categories of this paper are: comp-gas
15
The categories of this paper are: nucl-ex
35
The categories of this paper are: mtrl-th
37
The categories of this paper are: supr-con
25
The categories of this paper are: patt-sol
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The categories of this paper are: nucl-th
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The categories of this paper are: math-ph
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The categories of this paper are: q-fin
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The categories of this paper are: q-alg
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The categories of this paper are: adap-org
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The categories of this paper are: gr-qc
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The categories of this paper are: hep-ph
18
The categories of this paper are: econ
10
The categories of this paper are: q-bio