45 citations · 173 across the 28 of their papers we have counts for
30 papers
Models of Wildland Fire and Ember Spread
Kevin Speer, Bryan Quaife, Jie Sun
In this Chapter we explore the nature and theory of ember transport using observations from controlled laboratory settings, prescribed fire, and wildland fire. Specific examples an…
Statistical Models of Ember Wash and Their Impact on Wildfire Area Growth
Bryan Quaife, Kevin Speer
Wildfire spread is strongly influenced by the transport and ignition of embers. While long-range spotting driven by plume lofting has received significant attention, embers transpo…
Soft-Lubrication Drainage and Rupture in Particle-Driven Vesicles
Yuan-Nan Young, Bryan Quaife, Herve Nganguia +3
The deformation and rupture of a lipid vesicle due to the forced normal approach of an inclusion are essential for optimizing the design of magnetic giant unilamellar vesicles [mag…
The Ceiling Height of Wildland Fire Plumes in Sheared Boundary Layer Flow
Jie Sun, Kevin Speer, Bryan Quaife +2
Radar observations from a prescribed fire experiment reveal a large-scale, billow-like vorticity pair associated with the plume head at the onset of plume bending. The bending conf…
Boundary Integral Methods for Particle Diffusion in Complex Geometries: Shielding, Confinement, and Escape
Jesse Cherry, Alan E. Lindsay, Bryan D. Quaife
We present a numerical method for the solution of diffusion problems in unbounded planar regions with complex geometries of absorbing and reflecting bodies. Our numerical method ap…
Fire Dynamic Vision: Image Segmentation and Tracking for Multi-Scale Fire and Plume Behavior
Daryn Sagel, Bryan Quaife
The increasing frequency and severity of wildfires highlight the need for accurate fire and plume spread models. We introduce an approach that effectively isolates and tracks fire…
Hydrodynamics of Multicomponent Vesicles Under Strong Confinement
Ashley Gannon, Bryan Quaife, Y. -N. Young
We numerically investigate the hydrodynamics and membrane dynamics of multicomponent vesicles in two strongly confined geometries. This serves as a simplified model for red blood c…
Effects of Tunable Hydrophobicity on the Collective Hydrodynamics of Janus Particles under Flows
Szu-Pei Fu, Rolf Ryham, Bryan Quaife +1
Active colloidal systems with non-equilibrium self-organization is a long-standing, challenging area in biology. To understand how hydrodynamic flow may be used to actively control…
How fluid-mechanical erosion creates anisotropic porous media
Nicholas J. Moore, Jake Cherry, Shang-Huan Chiu +1
Using a Cauchy integral formulation of the boundary integral equations, we simulate the erosion a porous medium comprised of up to 100 solid bodies embedded in a Stokes flow. The g…
Trapping of Planar Brownian Motion: Full First Passage Time Distributions by Kinetic Monte-Carlo, Asymptotic and Boundary Integral Methods
Jake Cherry, Alan E. Lindsay, Adrian Navarro Hernandez +1
We consider the problem of determining the arrival statistics of unbiased planar random walkers to complex target configurations. In contrast to problems posed in finite domains, s…
Two-Dimensional Vesicle Hydrodynamics from Hydrophobic Attraction Potential
Szu-Pei Fu, Bryan Quaife, Rolf Ryham +1
We develop a new model, to our knowledge, for the many-body hydrodynamics of amphiphilic Janus particles suspended in a viscous background flow. The Janus particles interact throug…
On the Spatial and Temporal Order of Convergence of Hyperbolic PDEs
Siddhartha Bishnu, Mark Petersen, Bryan Quaife
In this work, we determine the full expression for the global truncation error of hyperbolic partial differential equations (PDEs). In particular, we use theoretical analysis and s…
Hydrodynamics of a Semipermeable Vesicle Under Flow and Confinement
Bryan Quaife, Ashley Gannon, Y. -N. Young
Lipid bilayer membranes have a native (albeit small) permeability for water molecules. Under an external load, provided that the bilayer structure stays intact and does not suffer…
Viscous Transport in Eroding Porous Media
Shang-Huan Chiu, M. N. J. Moore, Bryan D. Quaife
Transport of viscous fluid through porous media is a direct consequence of the pore structure. Here we investigate transport through a specific class of two-dimensional porous geom…
Hydrodynamics and rheology of a vesicle doublet suspension
Bryan Quaife, Shravan Veerapaneni, Y. -N. Young
The dynamics of an adhesive two-dimensional vesicle doublet under various flow conditions is investigated numerically using a high-order, adaptive-in-time boundary integral method.…
Using a High-Throughput Screening Algorithm and relativistic Density Functional Theory to Find Chelating Agents for Separation of Radioactive Waste
Ashley Gannon, Stephanie Marxsen, Kevin Mueller +2
Dangerous radioactive waste leftover from the Cold War era nuclear weapons production continues to contaminate sixteen sites around the United States. Although many challenges and…
Stable and contact-free time stepping for dense rigid particle suspensions
Lukas Bystricky, Sachin Shanbhag, Bryan D. Quaife
We consider suspensions of rigid bodies in a two-dimensional viscous fluid. Even with high-fidelity numerical methods, unphysical contact between particles occurs because of spatia…
Pixel-Level Statistical Analyses of Prescribed Fire Spread
Miles Currie, Kevin Speer, Kevin Hiers +3
Wildland fire dynamics is a complex turbulent dimensional process. Cellular automata (CA) is an efficient tool to predict fire dynamics, but the main parameters of the method are c…
A boundary integral equation method for mode elimination and vibration confinement in thin plates with clamped points
Alan E. Lindsay, Bryan Quaife, Laura Wendelberger
We consider the bi-Laplacian eigenvalue problem for the modes of vibration of a thin elastic plate with a discrete set of clamped points. A high-order boundary integral equation me…
Low-resolution simulations of vesicle suspensions in 2D
Gokberk Kabacaoglu, Bryan Quaife, George Biros
Vesicle suspensions appear in many biological and industrial applications. These suspensions are characterized by rich and complex dynamics of vesicles due to their interaction wit…
An efficient preconditioner for the fast simulation of a 2D Stokes flow in porous media
Pieter Coulier, Bryan Quaife, Eric Darve
We consider an efficient preconditioner for boundary integral equation (BIE) formulations of the two-dimensional Stokes equations in porous media. While BIEs are well-suited for re…
Quantification of mixing in vesicle suspensions using numerical simulations in two dimensions
Gokberk Kabacaoglu, Bryan Quaife, George Biros
We study mixing in Stokesian vesicle suspensions in two dimensions on a cylindrical Couette apparatus using numerical simulations. The vesicle flow simulation is done using a bound…
High-order adaptive time stepping for vesicle suspensions with viscosity contrast
Bryan Quaife, George Biros
We construct a high-order adaptive time stepping scheme for vesicle suspensions with viscosity contrast. The high-order accuracy is achieved using a spectral deferred correction (S…
Integral equation methods for the Yukawa-Beltrami equation on the sphere
Nilima Nigam, Mary-Catherine Kropinski, Bryan Quaife
An integral equation method for solving the Yukawa-Beltrami equation on a multiply-connected sub-manifold of the unit sphere is presented. A fundamental solution for the Yukawa-Bel…