Invisible Anchors Trap Particles in Branching Junctions

doi:10.1103/PhysRevLett.121.054502

Title: Invisible Anchors Trap Particles in Branching Junctions

Abstract

Here, 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. Lastly, from a stability analysis, we identify the parameter region of particle sizes and densities where capture due to anchors occurs.

Authors:

Oettinger, David ^[1];

^[2]; Stone, Howard A. ^[2]; Haller, George ^[1]

ETH Zürich (Switzerland). Institute for Mechanical Systems, Department of Mechanical and Process Engineering
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Computational Sciences and Engineering Division

Publication Date:: 2018-08-03

Research Org.:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF)

Sponsoring Org.:: USDOE Office of Science (SC)

OSTI Identifier:: 1474580

Grant/Contract Number:: [AC05-00OR22725]

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review Letters

Additional Journal Information:: [ Journal Volume: 121; Journal Issue: 5]; Journal ID: ISSN 0031-9007

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 42 ENGINEERING; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS

Citation Formats


                    Oettinger, David, Ault, Jesse T., Stone, Howard A., and Haller, George. Invisible Anchors Trap Particles in Branching Junctions.  United States: N. p., 2018. 
        Web.  doi:10.1103/PhysRevLett.121.054502.

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                    Oettinger, David, Ault, Jesse T., Stone, Howard A., & Haller, George. Invisible Anchors Trap Particles in Branching Junctions.  United States.  doi:10.1103/PhysRevLett.121.054502.

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                    Oettinger, David, Ault, Jesse T., Stone, Howard A., and Haller, George. Fri .  
        "Invisible Anchors Trap Particles in Branching Junctions".  United States.  doi:10.1103/PhysRevLett.121.054502.  https://www.osti.gov/servlets/purl/1474580.

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@article{osti_1474580,

  title        = {Invisible Anchors Trap Particles in Branching Junctions},

  author       = {Oettinger, David and Ault, Jesse T. and Stone, Howard A. and Haller, George},

  abstractNote = {Here, 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. Lastly, from a stability analysis, we identify the parameter region of particle sizes and densities where capture due to anchors occurs.},

  doi          = {10.1103/PhysRevLett.121.054502},

  journal      = {Physical Review Letters},

  number       = [5],

  volume       = [121],

  place        = {United States},

  year         = {2018},

  month        = {8}

}

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DOI: 10.1103/PhysRevLett.121.054502

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Cited by: 4 works

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Works referenced in this record:

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Karino, Takeshi; Goldsmith, Harry L.; Motomiya, Mineo
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Vigolo, Daniele; Radl, Stefan; Stone, Howard A.
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Vortex breakdown, linear global instability and sensitivity of pipe bifurcation flows
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Chen, Kevin K.; Rowley, Clarence W.; Stone, Howard A.
Journal of Fluid Mechanics, Vol. 815
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Where do inertial particles go in fluid flows?
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Shin, Sangwoo; Ault, Jesse T.; Stone, Howard A.
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The gravitational settling of aerosol particles in homogeneous turbulence and random flow fields
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Journal of Fluid Mechanics, Vol. 174
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Similar Records

Title: Invisible Anchors Trap Particles in Branching Junctions

Abstract

Citation Formats

Flow Patterns in Vessels of Simple and Complex Geometries journal, December 1987

Vortex-Breakdown-Induced Particle Capture in Branching Junctions journal, August 2016

On the periodic motions of dynamical systems journal, January 1927

On the dynamics of buoyant and heavy particles in a periodic Stuart vortex flow journal, September 1993

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Unexpected trapping of particles at a T junction journal, March 2014

Vortex breakdown, linear global instability and sensitivity of pipe bifurcation flows journal, February 2017

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Particle migration and sorting in microbubble streaming flows journal, January 2016

A tensorial approach to computational continuum mechanics using object-oriented techniques journal, January 1998

Flow-Driven Rapid Vesicle Fusion via Vortex Trapping journal, February 2015

The gravitational settling of aerosol particles in homogeneous turbulence and random flow fields journal, January 1987

Flow Patterns in Vessels of Simple and Complex Geometries
journal, December 1987

Vortex-Breakdown-Induced Particle Capture in Branching Junctions
journal, August 2016

On the periodic motions of dynamical systems
journal, January 1927

On the dynamics of buoyant and heavy particles in a periodic Stuart vortex flow
journal, September 1993

Vortex dynamics in a pipe T-junction: Recirculation and sensitivity
journal, March 2015

Unexpected trapping of particles at a T junction
journal, March 2014

Vortex breakdown, linear global instability and sensitivity of pipe bifurcation flows
journal, February 2017

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