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Listar por autor "González Pintor, Sebastián"

Mostrando ítems 1-11 de 11

Approximation of the Neutron Diffusion Equation on Hexagonal Geometries

González Pintor, Sebastián (Universitat Politècnica de València, 2012-11-16)

La ecuación de la difusión neutrónica describe la población de neutrones de un reactor nuclear. Este trabajo trata con este modelo para reactores nucleares con geometría hexagonal. En primer lugar se estudia la ecuación ...
Métodos Espectrales para el problema de los Modos Lambda en geometría hexagonal

González Pintor, Sebastián (Universitat Politècnica de València, 2011-10-25)

Se analizan distintos Métodos Espectrales para aproximar la ecuación de los Modos Lambda, tanto para geometrías unidimensionales, como para geometrías bidimensionales en las que un mallado hexagonal representa los elementos ...
Modeling of boundary conditions in embedded lattice calculations

Martín Domínguez, Daniel (Universitat Politècnica de València, 2016-01-20)

Consulta en la Biblioteca ETSI Industriales (Riunet)
Modified Block Newton method for the lambda modes problem

González Pintor, Sebastián; Ginestar Peiro, Damián; Verdú Martín, Gumersindo Jesús (Elsevier, 2013-06)

[EN] To study the behaviour of nuclear power reactors it is necessary to solve the time dependent neutron diffusion equation using either a rectangular mesh for PWR and BWR reactors or a hexagonal mesh for VVER reactors. ...
Pin-wise homogenization for SPN neutron transport approximation using the finite element method

Vidal-Ferràndiz, Antoni; Gonzalez-Pintor, S.; Ginestar Peiro, Damián; Demaziere, C.; Verdú Martín, Gumersindo Jesús (Elsevier, 2018-03-01)

[EN] The neutron transport equation describes the distribution of neutrons inside a nuclear reactor core. Homogenization strategies have been used for decades to reduce the spatial and angular domain complexity of a nuclear ...
Preconditioning multiple right sides for the time dependent neutron diffusion equation

González Pintor, Sebastián; Ginestar Peiro, Damián; Verdú Martín, Gumersindo Jesús (American Nuclear Society, 2012-06-24)
Preconditioning the solution of the time- dependent neutron diffusion equation by recycling Krylov subspaces

González Pintor, Sebastián; Ginestar Peiro, Damián; Verdú Martín, Gumersindo Jesús (Taylor & Francis, 2014-01-02)

[EN] Spectral preconditioners are based on the fact that the convergence rate of Krylov subspace methods is improved if the eigenvalues of smallest magnitude of the system matrix are `removed'. In this paper, two ...
Schwarz type preconditioners for the neutron diffusion equation

Vidal-Ferràndiz, Antoni; González Pintor, Sebastián; Ginestar Peiro, Damián; Verdú Martín, Gumersindo Jesús; Demazière, Christophe (Elsevier, 2017-01-01)

[EN] Domain decomposition is a mature methodology that has been used to accelerate the convergence of partial differential equations. Even if it was devised as a solver by itself, it is usually employed together with Krylov ...
Updating the Lambda modes of a nuclear power reactor

González Pintor, Sebastián; Ginestar Peiro, Damián; Verdú Martín, Gumersindo Jesús (PERGAMON-ELSEVIER SCIENCE LTD, 2011)

[EN] Starting from a steady state configuration of a nuclear power reactor some situations arise in which the reactor configuration is perturbed. The Lambda modes are eigenfunctions associated with a given configuration ...
Use of discontinuity factors in high-order finite element methods

Vidal-Ferràndiz, Antoni; González Pintor, Sebastián; Ginestar Peiro, Damián; Verdú Martín, Gumersindo Jesús; Asadzadeh, M.; Demazière, Christophe (Elsevier Masson, 2016-01)

The discontinuity factors are a technique widely used in nodal methods to minimize the error due to spatial homogenization of cross sections for a coarse mesh core calculation. In the present work, the introduction of ...
Using proper generalized decomposition to compute the dominant mode of a nuclear reactor

González Pintor, Sebastián; Ginestar Peiro, Damián; Verdú Martín, Gumersindo Jesús (Elsevier, 2013-04)

Proper generalized decomposition is a recently developed technique that solves some multidimensional problems using auxiliar models in a lower dimensional space. A method based on this technique together with the Newton ...