• Corpus ID: 247084105

Lattice Boltzmann simulations of two linear microswimmers using the immersed boundary method

  title={Lattice Boltzmann simulations of two linear microswimmers using the immersed boundary method},
  author={Delphine Geyer and S. Ziegler and Alexander Sukhov and Maxime Hubert and A.-S. Smith and Othmane Aouane and Paolo Malgaretti and Jens Harting},
The performance of a single or the collection of microswimmers strongly depends on the hydrodynamic coupling among their constituents and themselves. We present a numerical study for a single and a pair of microswimmers based on lattice Boltzmann method (LBM) simulations. Our numerical algorithm consists of two separable parts. Lagrange polynomials provide a discretization of the microswimmers and the lattice Boltzmann method captures the dynamics of the surrounding fluid. The two components… 



Mesoscale simulations of Janus particles and deformable capsules in flow

This report studies Janus particles at a fluid-fluid interface using the Shan-Chen pseudopotential approach for multicomponent fluids in combination with a discrete element algorithm and studies the dense suspension of deformable capsules in a Kolmogorov flow by combining the lattice Boltzmann method with the immersed boundary method.

Lattice Boltzmann simulations of the bead-spring microswimmer with a responsive stroke—from an individual to swarms

This work simulates a microswimmer consisting of three beads connected by springs and dampers, using the self-developed waLBerla and [Formula: see text] framework based on the lattice Boltzmann method and the discrete element method, and presents the first fully resolved simulations of large swarms with active responsive components.

A general perturbative approach for bead-based microswimmers reveals rich self-propulsion phenomena

A general perturbative calculation scheme for swimmers composed of beads interacting by harmonic potentials, driven by an arbitrary force protocol, which is able to identify a behavior of the swimmer that is richer than predicted in previous models.

Modeling microscopic swimmers at low Reynolds number.

A new class of low Reynolds number swimmers is proposed, generalized three bead swimmers that can change both the length of their arms and the angle between them, and a design for a microstructure capable of moving in three dimensions is suggested.

Theoretical framework for two-microswimmer hydrodynamic interactions

Hydrodynamic interactions are crucial for determining the cooperative behavior of microswimmers at low Reynolds numbers. Here we provide a comprehensive analysis of the scaling laws and the strength

Nonlinear dynamics of a microswimmer in Poiseuille flow.

We study the three-dimensional dynamics of a spherical microswimmer in cylindrical Poiseuille flow which can be mapped onto a Hamiltonian system. Swinging and tumbling trajectories are identified. In

Optimal motion of triangular magnetocapillary swimmers.

The obtained maxima of the swimmer speed are interpreted by the optimal frequency centered around the characteristic relaxation time of a spherical particle, which shows a sharp dependence of the average center-of-mass speed on the frequency of the time-dependent external magnetic field.

Lattice Boltzmann model for simulating flows with multiple phases and components.

  • ShanChen
  • Physics
    Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics
  • 1993
A lattice Boltzmann model is developed which has the ability to simulate flows containing multiple phases and components and is highly efficient to compute on massively parallel computers.

Numerical simulations of self-diffusiophoretic colloids at fluid interfaces.

It is shown that when adsorbed at a fluid interface, an active colloid experiences a net torque even in the absence of a viscosity contrast between the two adjacent fluids.