1 code implementation • 7 Sep 2017 • B. Sprinkle, F. Balboa Usabiaga, N. A. Patankar, A. Donev
We demonstrate that we can efficiently generate deterministic and random displacements for many particles using preconditioned Krylov iterative methods, if kernel methods to efficiently compute the action of the Rotne-Prager-Yamakawa (RPY) mobility matrix and it "square" root are available for the given boundary conditions.
Soft Condensed Matter
1 code implementation • 28 Nov 2016 • A. M. Fiore, F. Balboa Usabiaga, A. Donev, J. W. Swan
The proposed method circumvents the super-linear scaling exhibited by all known iterative sampling methods applied directly to the RPY tensor that results from the power law growth of the condition number of tensor with the number of particles.
Soft Condensed Matter Computational Physics
3 code implementations • 5 Feb 2016 • F. Balboa Usabiaga, B. Kallemov, B. Delmotte, A. Pal Singh Bhalla, B. E. Griffith, A. Donev
For fully confined domains, such as periodic suspensions or suspensions confined in slit and square channels, we extend a recently-developed rigid-body immersed boundary method to suspensions of freely-moving passive or active rigid particles at zero Reynolds number.
Soft Condensed Matter
2 code implementations • 16 Jan 2014 • S. Delong, F. Balboa Usabiaga, R. Delgado-Buscalioni, B. E. Griffith, A. Donev
We develop a Fluctuating Immersed Boundary (FIB) method for performing Brownian dynamics simulations of confined particle suspensions.
Soft Condensed Matter Computational Physics
1 code implementation • 2 Jul 2013 • F. Balboa Usabiaga, R. Delgado-Buscalioni
The main role of the particle kernel is to interpolate fluid properties and spread particle forces.
Soft Condensed Matter
1 code implementation • 27 Dec 2012 • F. Balboa Usabiaga, R. Delgado-Buscalioni, B. E. Griffith, A. Donev
The coupling consistently includes excess (positive or negative) inertia of the particles relative to the displaced fluid, and accounts for thermal fluctuations in the fluid momentum equation.
Soft Condensed Matter