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  1. Velocity optimization of self-equilibrated obstacles in a two-dimensional viscous flow

    Publication
    An obstacle is immersed in an externally driven 2D Stokes or Navier-Stokes fluid. We study the self-equilibration conditions for that obstacle under steady state assumptions on …

  2. Velocity optimization of self-equilibrated obstacles in a two-dimensional viscous flow

    Publication
    An obstacle is immersed in an externally driven 2D Stokes or Navier-Stokes fluid. We study the self-equilibration conditions for that obstacle under steady state assumptions on …

  3. Correlations, mean-field limits, and transition to the concentrated regime in motile particle suspensions

    Publication
    Suspensions of swimming particles exhibit complex collective behaviors driven by hydrodynamic interactions, showing persistent large-scale flows and long-range correlations. While heavily studied, it remains unclear how …

  4. Correlations, mean-field limits, and transition to the concentrated regime in motile particle suspensions

    Publication
    Suspensions of swimming particles exhibit complex collective behaviors driven by hydrodynamic interactions, showing persistent large-scale flows and long-range correlations. While heavily studied, it remains unclear how …

  5. Lab icebergs melt down and flip out

    Publication
    Ice in nature is dynamic at all scales, from glacial sheets that deform and flow to icebergs that melt down and capsize [1,2]. For the latter, much …

  6. Mechanics and morphology of proliferating cell collectives with self-inhibiting growth

    Publication
    We study the dynamics of proliferating cell collectives whose microscopic constituents’ growth is inhibited by macroscopic growth-induced stress. Discrete particle simulations of a growing collective show the …

  7. Self-propulsion, flocking and chiral active phases from particles spinning at intermediate Reynolds numbers

    Publication
    Vorticity, a measure of the local rate of rotation of a fluid element, is the driver of incompressible flow. In viscous fluids, powering bulk flows requires the continuous …

  8. Yardangs sculpted by erosion of heterogeneous material

    Publication
    The recognizable shapes of landforms arise from processes such as erosion by wind or water currents. However, explaining the physical origin of natural structures is challenging due to …

  9. Variational bounds and nonlinear stability of an active nematic suspension

    Publication
    We use the entropy method to analyse the nonlinear dynamics and stability of a continuum kinetic model of an active nematic suspension. From the time evolution of the …

  10. Learning fast, accurate, and stable closures of a kinetic theory of an active fluid

    Publication
    Important classes of active matter systems can be modeled using kinetic theories. However, kinetic theories can be high dimensional and challenging to simulate. Reduced-order representations based on …

  11. Conformations, correlations, and instabilities of a flexible fiber in an active fluid

    Publication
    Fluid-structure interactions between active and passive components are important for many biological systems to function. A particular example is chromatin in the cell nucleus, where ATP-powered …

  12. Confirmations, correlatons and instabilities of a flexible fiber in an active fluid

    Publication
    Fluid-structure interactions between active and passive components are important for many biological systems to function. A particular example is chromatin in the cell nucleus, where ATP-powered …

  13. Sculpting the Sphinx

    Publication
    This paper is associated with a poster winner of a 2022 American Physical Society's Division of Fluid Dynamics (DFD) Milton van Dyke Award for work presented at …