Cory Hauck

Highlights

IEAD comparison
Data-driven surrogate modeling of hPIC ion energy-angle distributions for high-dimensional sensitivity analysis of plasma parameters’ uncertainty

We present a data-driven strategy for effective construction of a surrogate model in high-dimensional parameter space for the ion energy-angle distribution (IEAD) output of hPIC simulations of plasma…

Solution profiles of the scalar flux for various methods
Low-Memory, Discrete Ordinates, Discontinuous Galerkin Methods for Radiative Transport

The discrete ordinates discontinuous Galerkin (SN -DG) method is a well-established and practical approach for solving the radiative transport equation. In this paper, we study a low- memory…

Numerical errrors from simulation of a radiating sphere.
Improvements to a class of hybrid methods for radiation transport: Nyström reconstruction and defect correction methods

In this paper, two modifications are introduced for improving the accuracy, versatility, and robustness of a class of hybrid methods for radiation transport.  Such ethods are constructed by…

Comparison of several iterative solvers for multiscale simulations of a silicon diode. The implicit solvers are faster than standard explicit (EX) or implicit-explicit (IMEX) schemes. The reduced-order preconditioner gives another 50% speedup.
ORNL researchers develop fast, implicit solvers for multiscale kinetic equations of charged particle transport

Researchers from Oak Ridge National Laboratory and the University of Massachusetts Dartmouth investigated several different approaches for solving fully implicit discretizations of a simplified…

Steady state free electron distribution of a silicon diode model with a bias voltage.
A fast implicit solver for semiconductor models in one space dimension

Several different approaches are proposed for solving fully implicit discretizations of a simplified Boltzmann-Poisson system with a linear relaxation-type collision kernel.  This system models…