Lubricated immersed boundary method in two dimensions

doi:10.1016/j.jcp.2017.11.029

Title: Lubricated immersed boundary method in two dimensions

Abstract

Many biological examples of fluid-structure interaction, including the transit of red blood cells through the narrow slits in the spleen and the intracellular trafficking of vesicles into dendritic spines, involve the near-contact of elastic structures separated by thin layers of fluid. Motivated by such problems, we introduce an immersed boundary method that uses elements of lubrication theory to resolve thin fluid layers between immersed boundaries. We demonstrate 2nd-order accurate convergence for simple two-dimensional flows with known exact solutions to showcase the increased accuracy of this method compared to the standard immersed boundary method. Motivated by the phenomenon of wall-induced migration, we apply the lubricated immersed boundary method to simulate an elastic vesicle near a wall in shear flow. We also simulate the dynamics of a vesicle traveling through a narrow channel and observe the ability of the lubricated method to capture the vesicle motion on relatively coarse fluid grids.

Authors:

Fai, Thomas G. ^[1]; Rycroft, Chris H. ^[2]

Harvard Univ., Cambridge, MA (United States). Paulson School of Engineering
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Mathematics Group

Publication Date:: 2017-12-05

Research Org.:: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR); National Science Foundation (NSF)

OSTI Identifier:: 1526510

Alternate Identifier(s):: OSTI ID: 1576609

Grant/Contract Number:: AC02-05CH11231; DMS-1502851

Resource Type:: Accepted Manuscript

Journal Name:: Journal of Computational Physics

Additional Journal Information:: Journal Volume: 356; Journal Issue: C; Journal ID: ISSN 0021-9991

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Subject:: 59 BASIC BIOLOGICAL SCIENCES

Citation Formats


                    Fai, Thomas G., and Rycroft, Chris H. Lubricated immersed boundary method in two dimensions.  United States: N. p., 2017. 
        Web.  doi:10.1016/j.jcp.2017.11.029.

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                    Fai, Thomas G., & Rycroft, Chris H. Lubricated immersed boundary method in two dimensions.  United States.  doi:10.1016/j.jcp.2017.11.029.

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                    Fai, Thomas G., and Rycroft, Chris H. Tue .  
        "Lubricated immersed boundary method in two dimensions".  United States.  doi:10.1016/j.jcp.2017.11.029.  https://www.osti.gov/servlets/purl/1526510.

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@article{osti_1526510,

  title        = {Lubricated immersed boundary method in two dimensions},

  author       = {Fai, Thomas G. and Rycroft, Chris H.},

  abstractNote = {Many biological examples of fluid-structure interaction, including the transit of red blood cells through the narrow slits in the spleen and the intracellular trafficking of vesicles into dendritic spines, involve the near-contact of elastic structures separated by thin layers of fluid. Motivated by such problems, we introduce an immersed boundary method that uses elements of lubrication theory to resolve thin fluid layers between immersed boundaries. We demonstrate 2nd-order accurate convergence for simple two-dimensional flows with known exact solutions to showcase the increased accuracy of this method compared to the standard immersed boundary method. Motivated by the phenomenon of wall-induced migration, we apply the lubricated immersed boundary method to simulate an elastic vesicle near a wall in shear flow. We also simulate the dynamics of a vesicle traveling through a narrow channel and observe the ability of the lubricated method to capture the vesicle motion on relatively coarse fluid grids.},

  doi          = {10.1016/j.jcp.2017.11.029},

  journal      = {Journal of Computational Physics},

  number       = C,

  volume       = 356,

  place        = {United States},

  year         = {2017},

  month        = {12}

}

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DOI: 10.1016/j.jcp.2017.11.029

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Works referencing / citing this record:

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Coarse graining the dynamics of immersed and driven fiber assemblies
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Physical Review Fluids, Vol. 4, Issue 7
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Title: Lubricated immersed boundary method in two dimensions

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