Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Deep Learning of Vortex Induced Vibrations   Vortex induced vibrations of bluff bodies occur when the vortex shedding
frequency is close to the natural frequency of the structure. Of interest is
the prediction of the lift and drag forces on the structure given some limited
and scattered information on the velocity field. This is an inverse problem
that is not straightforward to solve using standard computational fluid
dynamics (CFD) methods, especially since no information is provided for the
pressure. An even greater challenge is to infer the lift and drag forces given
some dye or smoke visualizations of the flow field. Here we employ deep neural
networks that are extended to encode the incompressible Navier-Stokes equations
coupled with the structure's dynamic motion equation. In the first case, given
scattered data in space-time on the velocity field and the structure's motion,
we use four coupled deep neural networks to infer very accurately the
structural parameters, the entire time-dependent pressure field (with no prior
training data), and reconstruct the velocity vector field and the structure's
dynamic motion. In the second case, given scattered data in space-time on a
concentration field only, we use five coupled deep neural networks to infer
very accurately the vector velocity field and all other quantities of interest
as before. This new paradigm of inference in fluid mechanics for coupled
multi-physics problems enables velocity and pressure quantification from flow
snapshots in small subdomains and can be exploited for flow control
applications and also for system identification.

4
The categories of this paper are: cond-mat
26
The categories of this paper are: bayes-an
29
The categories of this paper are: funct-an
20
The categories of this paper are: acc-phys
10
The categories of this paper are: q-bio
17
The categories of this paper are: q-fin
27
The categories of this paper are: comp-gas
35
The categories of this paper are: mtrl-th
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The categories of this paper are: quant-ph
31
The categories of this paper are: ao-sci
36
The categories of this paper are: cmp-lg
9
The categories of this paper are: nlin
21
The categories of this paper are: adap-org
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The categories of this paper are: hep-th
25
The categories of this paper are: patt-sol
33
The categories of this paper are: plasm-ph