Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Automated generation of 0D and 1D reduced-order models of
  patient-specific blood flow   Three-dimensional (3D) cardiovascular fluid dynamics simulations typically
require hours to days of computing time on a high-performance computer.
One-dimensional (1D) and lumped-parameter zero-dimensional (0D) models show
great promise for accurately predicting blood flow and pressure with only a
fraction of the cost. They can accelerate uncertainty quantification,
optimization, and design parameterization studies. Previously, these models
needed to be created laboriously by hand, and this limited assessment of their
approximation accuracy to very few models in prior studies. This work proposes
a fully automated and openly available framework to generate and simulate 0D
and 1D models from 3D patient-specific geometries. Our only input is the 3D
geometry; we do not use any prior knowledge from 3D simulations. All
computational tools presented in this work are implemented in the open-source
software platform SimVascular. We demonstrate the reduced-order approximation
quality against full 3D solutions in a comprehensive comparison with N=73
publicly available models from various anatomies, vessel types, and disease
conditions. Relative average approximation errors of flows and pressures
typically ranged from 1% to 10% for both 0D and 1D models, at the caps and
inside the vessel branches. Though they have minimally higher approximation
errors than 1D, we recommend using 0D models due to their robustness and
computational efficiency. Automatically generated reduced-order models can
significantly speed up model development and shift the computational load from
high-performance to personal computers.

25
The categories of this paper are: patt-sol
28
The categories of this paper are: alg-geom
10
The categories of this paper are: q-bio
3
The categories of this paper are: physics
2
The categories of this paper are: math
35
The categories of this paper are: mtrl-th
17
The categories of this paper are: q-fin
37
The categories of this paper are: supr-con
0
The categories of this paper are: hep-ph
20
The categories of this paper are: acc-phys
19
The categories of this paper are: eess
7
The categories of this paper are: hep-th
15
The categories of this paper are: nucl-ex
9
The categories of this paper are: nlin
22
The categories of this paper are: chao-dyn
14
The categories of this paper are: math-ph