Research Experience
Los Alamos National Laboratory
Aug. 2022–present
Nicholas C. Metropolis Postdoctoral Fellow
- Proved that the primary Discontinuous Galerkin-based discretization of the S_{N} transport equations used in the Capsaicin production thermal radiative transfer code will not preserve the asymptotic diffusion limit on adaptively refined meshes; used the theory to propose modifications that do preserve this limit
- Developing high-order low-order schemes with implicit-explicit time integration to significantly reduce the number of high-dimensional transport sweeps required in thermal radiative transfer simulations; investigating the feasibility of high-order, holistic time integration for tightly coupled radiation-hydrodynamics problems
- Advising the implementation of the Second Moment Methods (SMMs) I developed in my dissertation into LANL's Capsaicin code and LLNL's next-generation, production thermal radiative transfer code, RADAR
- Mentoring a student at UCB/LLNL who is using a SMM to design a hybrid deterministic-stochastic method that has cost independent of the mean free path
University of California, Berkeley
2017–2022
Graduate Student Researcher
- Developed Variable Eddington Factor (VEF) and Second Moment methods to efficiently solve the radiation transport equation on curved meshes with arbitrary-order accuracy
- Demonstrated these methods can be effectively preconditioned to solve independent of the mesh size and polynomial order on challenging proxy problems from thermal radiative transfer
- These methods have received programmatic funding at both LLNL and LANL to implement them in their production radiation-hydroynamics codes
Lawrence Livermore National Laboratory
Summer 2021
CSGF Practicum
- Performed parallel scaling analysis of the Discontinuous Galerkin-based VEF method
- Investigated extension of VEF discretizations to RZ geometry
Lawrence Livermore National Laboratory
Summer 2020
CSGF Practicum
- Explored iterative solvers for the solution of the VEF equations discretized with the mixed finite element method
Los Alamos National Laboratory
Summer 2019
CSGF Practicum
- Developed a "fully local" quasidiffusion method and implemented it in Capsaicin, a production thermal radiative transfer code at LANL
Lawrence Livermore National Laboratory
Summer 2018
High Energy Density Physics Intern
- Developed a high-order mixed finite element discretization for the VEF equations in 2/3D
- Implemented VEF in an LLNL thermal radiative transfer research code
Lawrence Livermore National Laboratory
Summer 2017
High Energy Density Physics Intern
- Designed and implemented a generalized nuclear reaction network in Cosmos++, an LLNL astrophysics code
- Created a massively parallel nucleosynthesis post-processor
- Used the generalized network and post-processor to investigate tidal disruption in white dwarfs, resulted in a publication
Center for Exascale Radiation Transport (TAMU)
Spring 2017
Undergraduate Researcher
- Developed a 1D mixed finite element discretization of the VEF equations
Lawrence Livermore National Laboratory
Summer 2016
High Energy Density Physics Intern
- Implemented a 19 isotope nuclear reaction network in Cosmos++
Fuel Cycle and Materials Laboratory (TAMU)
2014–2016
Undergraduate Researcher/Lab Technician
- Designed an electrorefiner to purify depleted uranium metal with non-aqueous electrolysis