115 citations · 311 across the 20 of their papers we have counts for
20 papers
Scientific Machine Learning for Modeling and Simulating Complex Fluids
Kyle R. Lennon, Gareth H. McKinley, James W. Swan
The formulation of rheological constitutive equations -- models that relate internal stresses and deformations in complex fluids -- is a critical step in the engineering of systems…
A Data-Driven Method for Automated Data Superposition with Applications in Soft Matter Science
Kyle R. Lennon, Gareth H. McKinley, James W. Swan
The superposition of data sets with internal parametric self-similarity is a longstanding and widespread technique for the analysis of many types of experimental data across the ph…
Parameterization of hydrodynamic friction in a model for sheared suspensions of rough particles
Madhu V. Majji, James W. Swan
We propose a method to parameterize a coarse grained model for the hydrodynamic friction between nearly touching rough spheres in suspension flows. The frictional resistance due to…
Locally Feasibly Projected Sequential Quadratic Programming for Nonlinear Programming on Arbitrary Smooth Constraint Manifolds
Kevin S. Silmore, James W. Swan
High-dimensional nonlinear optimization problems subject to nonlinear constraints can appear in several contexts including constrained physical and dynamical systems, statistical e…
Thermally Fluctuating, Semiflexible Sheets in Simple Shear Flow
Kevin S. Silmore, Michael S. Strano, James W. Swan
We perform Brownian dynamics simulations of semiflexible colloidal sheets with hydrodynamic interactions and thermal fluctuations in shear flow. As a function of the ratio of bendi…
On the unsteady and lineal translation of a sphere through a viscoelastic fluid
Mary A. Joens, James W. Swan
The unsteady, lineal translation of a solid spherical particle through viscoelastic fluids described by the Johnson-Segalman and Giesekus models is studied analytically. Solutions…
Underscreening and hidden ion structures in large scale simulations of concentrated electrolytes
Emily Krucker-Velasquez, James W. Swan
The electrostatic screening length predicted by Debye-Hückel theory decreases with increasing ionic strength, but recent experiments have found that the screening length can instea…
Medium Amplitude Parallel Superposition (MAPS) Rheology of a Wormlike Micellar Solution
Kyle R. Lennon, Gareth H. McKinley, James W. Swan
The weakly nonlinear rheology of a surfactant solution of wormlike micelles is investigated from both a modeling and experimental perspective using the framework of medium amplitud…
The Medium Amplitude Response of Nonlinear Maxwell-Oldroyd Type Models in Simple Shear
Kyle R. Lennon, Gareth H. McKinley, James W. Swan
A general framework for Maxwell-Oldroyd type differential constitutive models is examined, in which an unspecified nonlinear function of the stress and rate-of-deformation tensors…
Buckling, Crumpling, and Tumbling of Semiflexible Sheets in Simple Shear Flow
Kevin S. Silmore, Michael S. Strano, James W. Swan
As 2D materials such as graphene, transition metal dichalcogenides, and 2D polymers become more prevalent, solution processing and colloidal-state properties are being exploited to…
Short and soft: multi-domain organization, tunable dynamics and jamming in suspensions of grafted colloidal cylinders with small aspect ratio
Daniele Parisi, Yingbo Ruan, Guy Ochbaum +8
The yet virtually unexplored class of soft colloidal rods with small aspect ratio is investigated and shown to exhibit a very rich phase and dynamic behavior, spanning from liquid…
Medium Amplitude Parallel Superposition (MAPS) Rheology, Part 2: Experimental Protocols and Data Analysis
Kyle R. Lennon, Michela Geri, Gareth H. McKinley +1
An experimental protocol is developed to directly measure the new material functions revealed by medium amplitude parallel superposition (MAPS) rheology. This experimental protocol…
Medium Amplitude Parallel Superposition (MAPS) Rheology, Part 1: Mathematical Framework and Theoretical Examples
Kyle R. Lennon, Gareth H. McKinley, James W. Swan
A new mathematical representation for nonlinear viscoelasticity is presented based on application of the Volterra series expansion to the general nonlinear relationship between she…
Modelling a Hydrodynamic Instability in Freely Settling Colloidal Gels
Zsigmond Varga, Jennifer L. Hofmann, James W. Swan
Attractive colloidal dispersions, suspensions of fine particles which aggregate and frequently form a space spanning elastic gel are ubiquitous materials in society with a wide ran…
From Hindered to Promoted Settling in Dispersions of Attractive Colloids: Simulation, Modeling, and Application to Macromolecular Characterization
Andrew M. Fiore, Gang Wang, James W. Swan
The settling of colloidal particles with short-ranged attractions is investigated via highly resolved immersed boundary simulations. At modest volume fractions, we show that inter-…
Rapid Sampling of Stochastic Displacements in Brownian Dynamics Simulations with Stresslet Constraints
Andrew M. Fiore, James W. Swan
Brownian Dynamics simulations are an important tool for modeling the dynamics of soft matter. However, accurate and rapid computations of the hydrodynamic interactions between susp…
How Confinement-Induced Structures Alter the Contribution of Hydrodynamic and Short-Ranged Repulsion Forces to the Viscosity of Colloidal Suspensions
Meera Ramaswamy, Neil Y. C. Lin, Brian D. Leahy +4
Understanding the correlation between structure and rheology in colloidal suspensions is important as these suspensions are crucial in industrial applications. Moreover, colloids e…
On the normal modes of weak colloidal gels
Zsigmond Varga, James W. Swan
The normal modes and relaxation rates of weak colloidal gels are investigated in computations employing different models of the hydrodynamic interactions between colloids. The eige…
Rapid Sampling of Stochastic Displacements in Brownian Dynamics Simulations
A. M. Fiore, F. Balboa Usabiaga, A. Donev +1
We present a new method for sampling stochastic displacements in Brownian Dynamics (BD) simulations of colloidal scale particles. The method relies on a new formulation for Ewald s…
Degenerate Rayleigh-Plateau instability in a magnetically annealed colloidal dispersion
James W. Swan, Yifei Liu, Eric M. Furst
This fluid dynamics video depicts the evolution of a suspension of paramagnetic colloids under the influence of a uniform, pulsed magnetic field. At low pulse frequencies, the susp…