Results 61 to 70 of about 55,127 (244)

Spectral Nodal Methodology for Multigroup Slab-Geometry Discrete Ordinates Neutron Transport Problems with Linearly Anisotropic Scattering

Brazilian Journal of Radiation Sciences, 2021
In this paper, we propose a numerical methodology for the development of a method of the spectral nodal class that generates numerical solutions free from spatial truncation errors.
Amaury Muñoz Oliva, Hermes Alves Filho, Davi José Martins e Silva, Carlos Rafael García Hernández   +3 more
doaj   +1 more source

Constructing an interval of Minkowski space from a causal set

, 2006
A criticism sometimes made of the causal set quantum gravity program is that there is no practical scheme for identifying manifoldlike causal sets and finding embeddings of them into manifolds.
Henson, Joe
core   +1 more source

Geodesic Renormalisation Group Flow [PDF]

, 1995
It is shown that the renormalisation group flow in coupling constant space can be interpreted in terms of a dynamical equation for the couplings analogous to viscous fluid flow under the action of a potential.
Dolan, Brian P.
core   +3 more sources

Experimental and Numerical Investigation of Cedar Façade Flame Spread With Respect to Sidewall

Fire and Materials, EarlyView.
ABSTRACT In response to growing energy conservation and carbon neutrality efforts, façade systems incorporating wooden materials have attracted increasing attention, which in turn raises concerns about their combustibility. This study presents a combined experimental and numerical investigation of flame spread along cedar façades.
Xukun Sun, Hideki Yoshioka, Takafumi Noguchi, Yuhei Nishio, Manabu Kanematsu, Biao Zhou, Mingwei Xu   +6 more
wiley   +1 more source

Spectral-Nodal Deterministic Methodology for Neutron Shielding Calculations using the X, Y - geometry Multigroup Transport Equation in the Discrete Ordinates Formulation

Vetor, 2021
In this work, we present the most recent numerical results in a nodal approach, which resulted in the development of a new numerical spectral nodal method, based on the spectral analysis of the multigroup, isotropic scattering neutron transport equations
Amaury Munoz Oliva, Hermes Alves Filho
doaj   +1 more source

Sparse Discrete Ordinates Method in Radiative Transfer [PDF]

, 2017
The stationary monochromatic radiative transfer equation (RTE) is a partial differential transport equation stated on a five-dimensional phase space, the Cartesian product of physical and angular domain.
Grella, Konstantin, Schwab, Christoph
core  

Exploring eco‐evolutionary and temporal patterns of arbuscular mycorrhizal fungal communities colonizing Sorghum bicolor across sites of contrasting land use history and climate

PLANTS, PEOPLE, PLANET, EarlyView.
Sorghum bicolor is a globally important cereal crop with annual yields exceeding 50 million tons across more than 100 countries and can be grown on marginal lands where conventional agriculture is limited. We examined how eight genetically diverse sorghum genotypes shaped arbuscular mycorrhizal fungal (AMF) community assembly across two contrasting ...
Philip Brailey‐Crane, Sedona M. Spann, Thomas H. Pendergast IV, Ben J. Long, Ashton K. Brinkley, Sarah R. Mondibrown, Nancy C. Johnson, Katrien M. Devos, Jeffrey L. Bennetzen   +8 more
wiley   +1 more source

The Hamiltonian structure and Euler-Poincar\'{e} formulation of the Vlasov-Maxwell and gyrokinetic systems

, 2013
We present a new variational principle for the gyrokinetic system, similar to the Maxwell-Vlasov action presented in Ref. 1. The variational principle is in the Eulerian frame and based on constrained variations of the phase space fluid velocity and ...
Bers L., C. Chandre, H. Qin, Holm D., Holm D., J. Squire, Marsden J., Newcomb W. A., Pavlov D., W. M. Tang   +9 more
core   +3 more sources

Propagation Characteristics of Aluminum/Propylene Oxide Multiphase Cloud Explosion With Different AlH3 Ratios and Initiation Energies

Safety Science and Technology, EarlyView.
Explosion process of propylene oxide (PO)/Al/AlH3/air was investigated. The PO/Al/AlH3/air multiphase clouds under strong ignition detonation have reached a quasi‐detonation state. ABSTRACT Fuel‐air explosives (FAE) are an important source of explosion energy. The density advantage of aluminum hydride (AlH3) dust is obvious compared with that of liquid
Hangwei Wan, Min Wang, Jianhong Yang, Qi Zhang   +3 more
wiley   +1 more source

A Deep Penetration Problem Calculation Using AETIUS:An Easy Modeling Discrete Ordinates Ṯransport Code UsIng Unstructured Tetrahedral Mesh, Shared Memory Parallel

EPJ Web of Conferences, 2017
As computing power gets better and better, computer codes that use a deterministic method seem to be less useful than those using the Monte Carlo method.
KIM Jong Woon, LEE Young-Ouk
doaj   +1 more source