A POD reduced‐order model for eigenvalue problems with application to reactor physics

AG Buchan, CC Pain, F Fang… - International Journal for …, 2013 - Wiley Online Library
SUMMARY A reduced‐order model based on proper orthogonal decomposition (POD) has
been presented and applied to solving eigenvalue problems. The model is constructed via …

A Haar wavelet method for angularly discretising the Boltzmann transport equation

BJ Adigun, AG Buchan, A Adam, S Dargaville… - Progress in Nuclear …, 2018 - Elsevier
A novel, hierarchical Haar wavelet basis is introduced and used to discretise the angular
dimension of the Boltzmann transport equation. This is used in conjunction with a finite …

A space–angle DGFEM approach for the Boltzmann radiation transport equation with local angular refinement

J Kópházi, D Lathouwers - Journal of Computational Physics, 2015 - Elsevier
In this paper a new method for the discretization of the radiation transport equation is
presented, based on a discontinuous Galerkin method in space and angle that allows for …

Lattice Boltzmann solution of the transient Boltzmann transport equation in radiative and neutron transport

Y Wang, L Yan, Y Ma - Physical Review E, 2017 - APS
Applications of the transient Boltzmann transport equation (BTE) have undergone much
investigation, such as radiative heat transfer and neutron transport. This paper provides a …

Goal-based angular adaptivity with contributon theory for the discrete ordinates transport equation

D Ni, W **nyu, Z Bin, Q Youheng, X Longfei - Progress in Nuclear Energy, 2024 - Elsevier
A goal-based angular adaptivity has been described for solving the discrete ordinates
transport equation. This method uses the linear discontinuous finite element quadrature …

A discontinuous and adaptive reduced order model for the angular discretization of the Boltzmann transport equation

AC Hughes, AG Buchan - International Journal for Numerical …, 2020 - Wiley Online Library
This article presents a new adaptive reduced order model for resolving the angular direction
of the Boltzmann transport equation, based on proper orthogonal decomposition (POD) and …

An adaptive reduced order model for the angular discretization of the Boltzmann transport equation using independent basis sets over a partitioning of the space …

AC Hughes, AG Buchan - International Journal for Numerical …, 2022 - Wiley Online Library
This article presents a new reduced order model (ROM) for the angular discretization of the
Boltzmann transport equation. The angular ROM is built over a partitioning of the space …

Scalable angular adaptivity for Boltzmann transport

S Dargaville, AG Buchan… - Journal of …, 2020 - Elsevier
This paper describes an angular adaptivity algorithm for Boltzmann transport applications
which for the first time shows evidence of O (n) scaling in both runtime and memory usage …

The inner-element subgrid scale finite element method for the Boltzmann transport equation

AG Buchan, AS Candy, SR Merton… - Nuclear science and …, 2010 - Taylor & Francis
This paper presents a new multiscale radiation transport method based on a Galerkin finite
element spatial discretization of the Boltzmann transport equation. The approach …

Goal-based angular adaptivity applied to the spherical harmonics discretisation of the neutral particle transport equation

MA Goffin, AG Buchan, AC Belme, CC Pain… - Annals of Nuclear …, 2014 - Elsevier
A variable order spherical harmonics scheme has been described and employed for the
solution of the neutral particle transport equation. The scheme is specifically described with …