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Listar por palabra clave "Eigenvalue problem"

Mostrando ítems 1-6 de 6

A multigrid method to compute the dominant lambda modes of a nuclear reactor

Carreño, Amanda; Vidal-Ferràndiz, Antoni; Ginestar Peiro, Damián; Verdú Martín, Gumersindo Jesús (International Center for Numerical Methods in Engineering (CIMNE), 2017-07-05)

[EN] High accuracy is required for the solution of the lambda modes problem associated with the neutron diffusion equation. In this work, a multigrid method based on finite element method has been proposed to solve this ...
Assembly Discontinuity Factors for the Neutron Diffusion Equation discretized with the Finite Volume Method. Application to BWR

Bernal-Garcia, Alvaro; Román Moltó, José Enrique; Miró Herrero, Rafael; Verdú Martín, Gumersindo Jesús (Elsevier Masson, 2016-11)

The neutron flux spatial distribution in Boiling Water Reactors (BWRs) can be calculated by means of the Neutron Diffusion Equation (NDE), which is a space- and time-dependent differential equation. In steady state conditions, ...
Calculation of multiple eigenvalues of the neutron diffusion equation discretized with a parallelized finite volume method

Bernal-Garcia, Alvaro; Roman, Jose E.; Miró Herrero, Rafael; Verdú Martín, Gumersindo Jesús (Elsevier, 2018)

[EN] The spatial distribution of the neutron flux within the core of nuclear reactors is a key factor in nuclear safety. The easiest and fastest way to determine it is by solving the eigenvalue problem of the neutron ...
Evanescent waves and deaf bands in sonic crystals

Romero García, Vicente; García Raffi, Luis Miguel; Sánchez Pérez, Juan Vicente (American Institute of Physics, 2011)

The properties of sonic crystals (SC) are theoretically investigated in this work by solving the inverse problem k(¿) using the extended plane wave expansion (EPWE). The solution of the resulting eigenvalue problem gives ...
Optimización del cálculo de los modos lambda mediante la utilización de cuda

Squillace, Filippo (Universitat Politècnica de València, 2013-02-22)

[ES] En este trabajo, se expone una solución eficiente para el cálculo de valores propios en un específico problema de ingeniería nuclear. Conociendo el tipo de problema es posible lograr muchas prestaciones y adaptar el ...
Scalable Block-Tridiagonal Eigensolvers in the Context of Electronic Structure Calculations

Lamas Daviña, Alejandro; Cartoixà, Xavier; Roman, Jose E. (IOS Press, 2018-03-01)

[EN] In computer-based numerical simulations, some methods to determine the electronic and optical properties of semiconductor nanostructures, require computing the energies that correspond to the interior eigenvalues of ...