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To grasp the intricacy of real-world conditions where multiple loads are applied simultaneously to a structure, one might visualize a section passing through a specific point within a body, aligned parallel to the xy plane. This section is subjected to various forces, including original loads, normal forces, and shearing forces.
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High-order simulation scheme for active particles driven by stress boundary conditions.

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  • 1Chair of Fluid Dynamics, Department of Mechanical Engineering, Technical University of Darmstadt, Germany.

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|April 16, 2021
PubMed
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We simulated self-propelled elliptic particles in a 2D fluid. Our method uses fluid stress to drive particle motion, enabling study of active particle dynamics and interactions.

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Area of Science:

  • Fluid dynamics
  • Active matter physics
  • Computational physics

Background:

  • Active particles exhibit complex behaviors in fluids.
  • Understanding their dynamics is crucial for soft matter science.
  • Simulating fluid-particle interactions requires robust numerical methods.

Purpose of the Study:

  • To investigate the dynamics and interactions of elliptic active particles.
  • To develop a numerical framework for simulating active particle suspensions.
  • To model self-propulsion via boundary-induced fluid stress.

Main Methods:

  • Solving Stokes equation for incompressible fluids using a discontinuous Galerkin scheme.
  • Prescribing fluid stress on the particle boundary to model self-propulsion.
  • Numerical simulation of single active particles.

Main Results:

  • Demonstrated a method for simulating active particle motion in a 2D solvent.
  • Successfully modeled self-propulsion mechanism through boundary conditions.
  • Obtained preliminary numerical results for single particle dynamics.

Conclusions:

  • The discontinuous Galerkin method is suitable for simulating active particles in incompressible fluids.
  • The proposed method provides a foundation for studying interacting active particle systems.
  • Further research will focus on simulating suspensions and emergent behaviors.