Results 51 to 60 of about 55,127 (244)

ARES: A Parallel Discrete Ordinates Transport Code for Radiation Shielding Applications and Reactor Physics Analysis

open access: yesScience and Technology of Nuclear Installations, 2017
ARES is a multidimensional parallel discrete ordinates particle transport code with arbitrary order anisotropic scattering. It can be applied to a wide variety of radiation shielding calculations and reactor physics analysis.
Yixue Chen   +5 more
doaj   +1 more source

A Discrete-Ordinates Solution for the Strong Evaporation Problem in Rarefied Gas Dynamics

open access: yesTrends in Computational and Applied Mathematics, 2021
In this work we solve the nonlinear strong evaporation problem in rarefied gas dynamics. The analysis is based on the BGK model, with three dimensional velocity vector, derived from the Boltzmann equation. We present the complete development of a closed
C. S. Scherer
doaj   +1 more source

Sidelining Mitigation: Climate Delay Discourses Among Municipal Legislators in Southeastern Brazil

open access: yesEnvironmental Policy and Governance, EarlyView.
ABSTRACT This study investigates how municipal legislators frame climate mitigation and how these framings shift responsibility, narrow the perceived scope of municipal authority, and reduce the urgency or feasibility of local action. We analyzed 31 interviews with city councilors serving on Permanent Environmental Committees across municipalities in ...
Tainá Yumi Patriani
wiley   +1 more source

A NOVEL COARSE-MESH METHOD APPLIED TO NEUTRON SHIELDING PROBLEMS USING THE MULTIGROUP TRANSPORT THEORY IN DISCRETE ORDINATES FORMULATIONS

open access: yesBrazilian Journal of Radiation Sciences, 2021
In this paper, we propose a new deterministic numerical methodology to solve the one-dimensional linearized Boltzmann equation applied to neutron shielding problems (fixed-source), using the transport equation in the discrete ordinates formulation (SN ...
Rafael Barbosa Libotte   +2 more
doaj   +1 more source

Are seizure forecasts and cycles better than chance? What chance?

open access: yesEpilepsia, EarlyView.
Abstract Objective There is a growing synergy between the lines of research on cycles in epilepsy and seizure forecasting. It has been conjectured, for instance, that incorporating information about significant seizure cycles into forecasting algorithms can lead to a better‐than‐chance forecasting performance.
Ralph G. Andrzejak   +4 more
wiley   +1 more source

GPU-based multi-group discrete ordinates transport calculations: Parallel computing implementation in STRAUM

open access: yesNuclear Engineering and Technology
Discrete ordinates (SN) method with unstructured meshes is highly appropriate for high-fidelity modeling and simulation of radiation shielding problems with complicated geometries.
Ao Zhang   +3 more
doaj   +1 more source

Large-Scale Heterogeneous Computing for 3D Deterministic Particle Transport on Tianhe-2A Supercomputer

open access: yesFrontiers in Energy Research, 2021
Scalable parallel algorithm for particle transport is one of the main application fields in high-performance computing. Discrete ordinate method (Sn) is one of the most popular deterministic numerical methods for solving particle transport equations.
Biao Li   +7 more
doaj   +1 more source

Low-energy electron transport with the method of discrete ordinates [PDF]

open access: yes, 1971
The one-dimensional discrete ordinates code ANISN was adapted to transport low energy (a few MeV) electrons. Calculated results obtained with ANISN were compared with experimental data for transmitted electron energy and angular distribution data for ...
Alsmiller, R. G., Jr.   +4 more
core   +2 more sources

A Discrete Spherical Harmonics Method for Radiative Transfer Analysis in Inhomogeneous Polarized Planar Atmosphere

open access: yes, 2018
A discrete spherical harmonics method is developed for the radiative transfer problem in inhomogeneous polarized planar atmosphere illuminated at the top by a collimated sunlight while the bottom reflects the radiation. The method expands both the Stokes
Kamdem, Hervé Thierry Tagne   +2 more
core   +1 more source

Hybrid Oxygen Enrichment and Preheating Strategy for Performance Recovery in Ultra‐Lean Micro–Trapped Vortex Combustors

open access: yesEnergy Science &Engineering, EarlyView.
Ultra‐lean H2 micro‐combustor performance is boosted through regulated O2 enrichment and inlet preheating. A 16‐case Taguchi study (ϕ = 0.3) shows: controlled enrichment and heating increase radiative output and efficiency, but excessive O2/temperature causes flashback.
Anouar Benzitouni   +4 more
wiley   +1 more source

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