99 citations · 223 across the 10 of their papers we have counts for
10 papers
Symmetry, Invariant Manifolds and Flow Reversals in Active Nematic Turbulence
Angel Naranjo, Rumayel Pallock, Caleb Wagner +1
We investigate the role of symmetry, exact coherent structures (ECSs), and their invariant manifolds in organizing flow reversals and turbulent dynamics in channel-confined two-dim…
Stacked tensorial neural networks for reduced-order modeling of a parametric partial differential equation
Caleb G. Wagner
Tensorial neural networks (TNNs) combine the successes of multilinear algebra with those of deep learning to enable extremely efficient reduced-order models of high-dimensional pro…
Exploring regular and turbulent flow states in active nematic channel flow via Exact Coherent Structures and their invariant manifolds
Caleb G. Wagner, Rumayel H. Pallock, Michael M. Norton +2
This work is a unified study of stable and unstable steady states of 2D active nematic channel flow using the framework of Exact Coherent Structures (ECS). ECS are stationary, peri…
Exact coherent structures and phase space geometry of pre-turbulent 2D active nematic channel flow
Caleb G. Wagner, Michael M. Norton, Jae Sung Park +1
Confined active nematics exhibit rich dynamical behavior, including spontaneous flows, periodic defect dynamics, and chaotic `active turbulence'. Here, we study these phenomena usi…
Steady states of active Brownian particles interacting with boundaries
Caleb G. Wagner, Michael F. Hagan, Aparna Baskaran
An active Brownian particle is a minimal model for a self-propelled colloid in a dissipative environment. Experiments and simulations show that, in the presence of boundaries and o…
Response of active Brownian particles to boundary driving
Caleb G. Wagner, Michael F. Hagan, Aparna Baskaran
We computationally study the behavior of underdamped active Brownian particles in a sheared channel geometry. Due to their underdamped dynamics, the particles carry momentum a char…
Constructing Solutions to Two-Way Diffusion Problems
Caleb G. Wagner, Richard Beals
A variety of boundary value problems in linear transport theory are expressed as a diffusion equation of the two-way, or forward-backward, type. In such problems boundary data are…
Noise and diffusion of a vibrated self-propelled granular particle
Lee Walsh, Caleb G. Wagner, Sarah Schlossberg +3
Granular materials are an important physical realization of active matter. In vibration-fluidized granular matter, both diffusion and self-propulsion derive from the same collision…
Steady-state distributions of ideal active Brownian particles under confinement and forcing
Caleb G. Wagner, Michael F. Hagan, Aparna Baskaran
We develop a formally exact technique for obtaining steady-state distributions of non-interacting active Brownian particles in a variety of systems. Our technique draws on results…
A classical nucleation theory description of active colloid assembly
Gabriel S. Redner, Caleb G. Wagner, Aparna Baskaran +1
Non-aligning self-propelled particles with purely repulsive excluded volume interactions undergo athermal motility-induced phase separation into a dilute gas and a dense cluster ph…