Efficient mesh refinement for the Poisson‐Boltzmann equation with boundary elements

V Ramm, JH Chaudhry… - Journal of Computational …, 2021 - Wiley Online Library
Abstract The Poisson‐Boltzmann equation is a widely used model to study electrostatics in
molecular solvation. Its numerical solution using a boundary integral formulation requires a …

Error estimation and uncertainty quantification for first time to a threshold value

JH Chaudhry, D Estep, Z Stevens… - BIT Numerical Mathematics, 2021 - Springer
Classical a posteriori error analysis for differential equations quantifies the error in a
Quantity of Interest which is represented as a bounded linear functional of the solution. In …

Adjoint-based Adaptive Multi-Level Monte Carlo for Differential Equations

J Chaudhry, Z Stevens - arXiv preprint arXiv:2206.02905, 2022 - arxiv.org
We present a multi-level Monte Carlo (MLMC) algorithm with adaptively refined meshes and
accurately computed stopping-criteria utilizing adjoint-based a posteriori error analysis for …

Error estimation for the time to a threshold value in evolutionary partial differential equations

JH Chaudhry, D Estep, T Giannini, Z Stevens… - BIT Numerical …, 2023 - Springer
We develop an a posteriori error analysis for a numerical estimate of the time at which a
functional of the solution to a partial differential equation (PDE) first achieves a threshold …

A posteriori error analysis for Schwarz overlapping domain decomposition methods

JH Chaudhry, D Estep, SJ Tavener - BIT Numerical Mathematics, 2021 - Springer
Abstract Domain decomposition methods are widely used for the numerical solution of
partial differential equations on high performance computers. We develop an adjoint-based …

Robust Uncertainty Quantification With Analysis of Error in Standard and Non-Standard Quantities of Interest

Z Stevens - 2022 - search.proquest.com
This thesis derives two Uncertainty Quantification (UQ) methods for differential equations
that depend on random parameters:(i) error bounds for a computed cumulative distribution …

A posteriori error estimation for the spectral deferred correction method

JH Chaudhry, JB Collins - Journal of Computational and Applied …, 2021 - Elsevier
The spectral deferred correction method is a variant of the deferred correction method for
solving ordinary differential equations. A benefit of this method is that is uses low order …

An a posteriori error analysis of stationary incompressible magnetohydrodynamics

AE Rappaport - 2020 - digitalrepository.unm.edu
Adjoint based a posteriori error analysis is a technique to produce exact error repre-
sentations for quantities of interests that are functions of the solution of systems of partial …

An a posteriori error analysis for the equations of stationary incompressible magnetohydrodynamics

JH Chaudhry, AE Rappaport, JN Shadid - SIAM Journal on Scientific …, 2021 - SIAM
Resistive magnetohydrodynamics (MHD) is a continuum base-level model for conducting
fluids (eg, plasmas and liquid metals) subject to external magnetic fields. The efficient and …