@article{3422,
  author = {David Oettinger and Jesse Ault and Howard Stone and George Haller},
  title = {Invisible Anchors Trap Particles in Branching Junctions.},
  abstract = { <p>We combine numerical simulations and an analytic approach to show that the capture of finite, inertial particles during flow in branching junctions is due to invisible, anchor-shaped three-dimensional flow structures. These Reynolds-number-dependent anchors define trapping regions that confine particles to the junction. For a wide range of Stokes numbers, these structures occupy a large part of the flow domain. For~flow in a V-shaped junction, at a critical Stokes number, we observe a topological transition due to the merger of two anchors into one. From a stability analysis, we identify the parameter region of particle sizes and densities where capture due to anchors occurs.</p> },
  year = {2018},
  journal = {Phys Rev Lett},
  volume = {121},
  pages = {054502},
  month = {2018 Aug 03},
  issn = {1079-7114},
  doi = {10.1103/PhysRevLett.121.054502},
  language = {eng},
}