Hauptseminar Active Matter SS 2017/Lattice Boltzmann Modeling of Active Particles

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Date

2017-05-09

Time

14:00

Topic

Lattice Boltzmann Modeling of Active Particles

Speaker

Ashreya Jayaram

Tutor

Georg Rempfer

Contents

This talk introduces the lattice-Boltzmann (LB) method for hydrodynamic flow simulations. We will discuss the physical origins of the method, the numerical implementation, and two different schemes used to couple LB and MD simulations. The first of these coupling schemes is the so-called Duenweg-Ahlrichs type point coupling, the second is the Ladd-type moving boundary scheme. Both of these schemes have been used to model actively propelled particles and a selection of such investigations will be presented.

This talk forms the basis for the followup talk Lattice Boltzmann Modeling of Chemical Swimmers, which is why particular focus lies on the introduction of the LB method.

Literature

• A. J. Wagner

"A Practical Introduction to the Lattice Boltzmann Method".

unpublished, https://www.ndsu.edu/fileadmin/physics.ndsu.edu/Wagner/LBbook.pdf, 2008.

• U. D. Schiller.
  Thermal fluctuations and boundary conditions in the lattice Boltzmann method.
  PhD thesis, Johannes Gutenberg-Universität Mainz, 2008.
  [PDF] (938 KB) [DOI]
• Burkhard Dünweg, Vladimir Lobaskin, Krishnan Seethalakshmy-Hariharan, Christian Holm.
  Colloidal electrophoresis: scaling analysis, Green-Kubo relation, and numerical results.
  Journal of Physics: Condensed Matter 20(40):404214, 2008.
  [PDF] (301 KB) [DOI]
• Joost de Graaf, Henri Menke, Arnold J. T. M. Mathijssen, Marc Fabritius, Christian Holm, Tyler N. Shendruk.
  Lattice-Boltzmann hydrodynamics of anisotropic active matter.
  The Journal of Chemical Physics 144(13):134106, 2016.
  [PDF] (1.9 MB) [DOI]
• Joost de Graaf, Arnold J. T. M. Mathijssen, Marc Fabritius, Henri Menke, Christian Holm, Tyler N. Shendruk.
  Understanding the onset of oscillatory swimming in microchannels.
  Soft Matter 12(21):4704–4708, 2016.
  [PDF] (2.3 MB) [DOI]