Deterministic radiative transfer equation solver on unstructured tetrahedral meshes: Efficient assembly and preconditioning

P Jolivet, MA Badri, Y Favennec - Journal of Computational Physics, 2021 - Elsevier
Due to its integro-differential nature, deriving schemes for numerically solving the radiative
transfer equation (RTE) is challenging. Most solvers are efficient in specific scenarios …

Comparative analysis of reduced-order spectral models and grouping strategies for non-equilibrium radiation

A Sahai, CO Johnston, B Lopez, M Panesi - Journal of Quantitative …, 2020 - Elsevier
Radiative transfer calculations in complex three-dimensional domains are plagued by
computational bottlenecks due to the combined cost of resolving spectral, angular, and …

Reduced-order modeling of non-Boltzmann thermochemistry and radiation for hypersonic flows

A Sahai - 2019 - ideals.illinois.edu
The non-equilibrium aerothermal environment during hypersonic flows is determined by the
interaction between a multitude of disparate physical phenomena with varying characteristic …

The Finite-Element with Discontiguous-Support Method

AT Till, ML Adams, JE Morel - Nuclear Science and Engineering, 2022 - Taylor & Francis
Energy discretization of the transport equation is difficult due to numerous strong, narrow
cross-section (XS) resonances. The standard traditional multigroup (MG) method can be …

Homogenization in the energy variable for a neutron transport model

H Hutridurga, O Mula, F Salvarani - Asymptotic Analysis, 2020 - content.iospress.com
This article addresses the homogenization of linear Boltzmann equation when the optical
parameters are highly heterogeneous in the energy variable. We employ the method of two …

Diffusion accelerated implicit Monte Carlo via Nonlinear elimination for thermal radiative transfer

AQ Lam - 2021 - ir.library.oregonstate.edu
In this dissertation, we derive and implement a new transport-diffusion hybrid algorithm for
solving thermal radiative transfer (TRT) problems. Using the method of nonlinear elimination …

Resolving rapid variation in energy for particle transport

TS Haut, CD Ahrens, A Jonko, AT Till, RB Lowrie - 2016 - osti.gov
Resolving the rapid variation in energy in neutron and thermal radiation transport is needed
for the predictive simulation capability in high-energy density physics applications. Energy …

[PDF][PDF] Linear and Nonlinear Schemes for Forward and Inverse Problems

O Mula - 2021 - hal.science
First of all, I would like to warmly thank Anthony Nouy, Mario Ohlberger, and Gianluigi Rozza
for having accepted to review this manuscript, and for providing very valuable feedback. I …