Results 61 to 70 of about 49,045 (194)

Quantum Finite Elements for Lattice Field Theory

, 2016
Viable non-perturbative methods for lattice quantum field theories on curved manifolds are difficult. By adapting features from the traditional finite element methods (FEM) and Regge Calculus, a new simplicial lattice Quantum Finite Element (QFE ...
Brower, Richard C., Fleming, George, Gasbarro, Andrew, Raben, Timothy, Tan, Chung-I, Weinberg, Evan   +5 more
core   +1 more source

Features tubular furnaces with fan and acoustic grazing flame burners

Известия высших учебных заведений: Проблемы энергетики, 2017
The paper presents the results of thermal and aerodynamic calculations in radiation chamber tubular furnaces with gas fan and acoustic burners grazing flame within the differential method for thermal calculating furnaces.
D. B. Vafin, M. A. Butyakov, D. A. Sadykova   +2 more
doaj   +1 more source

Principles of Discrete Time Mechanics: I. Particle Systems

, 1997
We discuss the principles to be used in the construction of discrete time classical and quantum mechanics as applied to point particle systems. In the classical theory this includes the concept of virtual path and the construction of system functions ...
Cadzow J A, George Jaroszkiewicz, Hashimoto T, Jaroszkiewicz G, Jaroszkiewicz G, Jaroszkiewicz G, Keith Norton, Klimek M, Lee T D, Logan J D, Maeda S, Streater R F, Yamamoto H   +12 more
core   +1 more source

Projected Discrete Ordinates Methods for Numerical Transport Problems [PDF]

Nuclear Science and Engineering, 1986
A class of “projected discrete ordinates” (PDO) methods is described for obtaining iterative solutions of discrete ordinates problems with convergence rates comparable to those observed using diffu...
openaire   +1 more source

Exponential Response Matrix Spectral Nodal Method for the Discrete Ordinates Neutral Particle Transport Model

Science and Technology of Nuclear Installations
In this work, the response matrix-exponential nodal method is presented to solve fixed source neutral particle transport problems with isotropic scattering and discrete ordinates formulation in two-dimensional Cartesian geometry.
Iram B. Rivas-Ortiz, Dany Sanchez-Dominguez, Susana Marrero Iglesias, Paulo Eduardo Ambrósio   +3 more
doaj   +1 more source

Solution of Linear Radiative Transfer Equation in Hollow Sphere by Diamond Difference Discrete Ordinates and Decomposition Methods

Semina: Ciências Exatas e Tecnológicas
In this article, we present a methodology to solve radiative transfer problems in spherical geometry without other forms of heat exchange. We use a decomposition method based on the Adomian formulations, together with a diamond difference scheme and a ...
Marcelo Schramm, Cibele Ladeia, Julio Cesar Fernandes   +2 more
doaj   +1 more source

ACS Algorithm in Discrete Ordinates for Pressure Vessel Dosimetry

EPJ Web of Conferences, 2016
The Adaptive Collision Source (ACS) method can solve the Linear Boltzmann Equation (LBE) more efficiently by adaptation of the angular quadrature order. This is similar to, and essentially an extension of, the first collision source method.
Walters William, Haghighat Alireza
doaj   +1 more source

Research on Random Discrete Ordinates Method Based on Quasi-Monte Carlo Integration Technique

Yuanzineng kexue jishu
The discrete ordinates (SN) method proposed by Carlson constitutes an angular discretization for neutron transport equation. Owing to its superior computational accuracy and efficiency compared to alternative numerical approaches, the SN method has been ...
DAI Tao, XU Longfei, LI Baiwen, SHEN Huayun, HU Yuan, MA Ruiyao
doaj   +1 more source

Energy dependent mesh adaptivity of discontinuous isogeometric discrete ordinate methods with dual weighted residual error estimators

, 2017
In this paper a hanging-node, discontinuous Galerkin, isogeometric discretisation of the multigroup, discrete ordinates () equations is presented in which each energy group has its own mesh.
Eaton, M, Kophazi, J, Owens, A, Welch, J
core   +1 more source

Heat TransferPerformance of C/SiC Sandwich Composites with Graded Lattice Cores

Journal of Harbin University of Science and Technology, 2017
An innovative design of C/SiC sandwich composites with graded lattice cores was proposed for the purpose of thermal protection system of high-speed aircraft. Considering the coupling of heat conduction，heat radiation and heat convection，three-dimensional
ZENG Tao, DU Chang-long, CHENG Su, WANG Zhi-hai   +3 more
doaj   +1 more source