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Listar por palabra clave "Eigenvalue problems"

Mostrando ítems 1-7 de 7

A composite spatial grid spectral Green's function method for one speed discrete ordinates eigenvalue problems in two-dimensional Cartesian geometry

Domínguez, Dany S.; Rocha,Rogério V.M.; Iglesias, Susana M.; Escrivá, A.; Alves Filho, Hermes (Elsevier, 2018-11)

[EN] Spectral Green's function nodal methods (SGF) are well established as a class of coarse mesh methods. For this reason, they are widely used in the solution of neutron transport problems in discrete ordinates formulation ...
A Jacobi-Davidson type method with a correction equation tailored for integral operators

Vasconcelos, Paulo B.; d'Almeida, Filomena D.; Román Moltó, José Enrique (Springer Verlag (Germany), 2013-09)

We propose two iterative numerical methods for eigenvalue computations of large dimensional problems arising from finite approximations of integral operators, and describe their parallel implementation. A matrix representation ...
Approximation of The Neutron Diffusion Equation on Hexagonal Geometries Using a h-p finite element method

Fayez Moustafa Moawad, Ragab (Universitat Politècnica de València, 2016-06-07)

[EN] The neutron diffusion equation is an approximation of the neutron transport equation that describes the neutron population in a nuclear reactor core. In particular, we will consider here VVER-type reactors which use ...
Fast Band--Krylov Eigensolver for Macromolecular Functional Motion Simulation on Multicore Architectures and Graphics Processors

Aliaga, Jose I.; Alonso Jordá, Pedro; Badía Contelles, José Manuel; Chacon, Pablo; Davidovic, Davo; Lopez-Blanco, Jose R.; Quintana-Orti, Enrique S (Elsevier, 2016-03-15)

We introduce a new iterative Krylov subspace-based eigensolver for the simulation of macromolecular motions on desktop multithreaded platforms equipped with multicore processors and, possibly, a graphics accelerator ...
Parallel implementation of Davidson-type methods for large-scale eigenvalue problems

Romero Alcalde, Eloy (Universitat Politècnica de València, 2012-04-17)

El problema de valores propios (tambien llamado de autovalores, o eigenvalues) esta presente en diversas tareas cienficas a traves de la resolucion de ecuaciones diferenciales, analisis de modelos y calculos de funciones ...
Solution of the Lambda modes problem of a nuclear power reactor using an h-p finite element method

Vidal Ferràndiz, Antoni; Fayez Moustafa Moawad, Ragab; Ginestar Peiro, Damián; Verdú Martín, Gumersindo Jesús (Elsevier Masson, 2014-10)

Lambda modes of a nuclear power reactor have interest in reactor physics since they have been used to develop modal methods and to study BWR reactor instabilities. An h–p-Adaptation finite element method has been implemented ...
Two-sided orthogonal reductions to condensed forms on asymmetric multicore processors

Alonso-Jordá, Pedro; Catalán, Sandra; Herrero, José R.; Quintana-Ortí, Enrique Salvador; Rodríguez-Sánchez, Rafael (Elsevier, 2018-12)

[EN] We investigate how to leverage the heterogeneous resources of an Asymmetric Multicore Processor (AMP) in order to deliver high performance in the reduction to condensed forms for the solution of dense eigenvalue and ...