RiuNet UPV Home
:
Browsing by UPV Unit

Search RiuNet

Browse

All of RiuNet

My Account

RiuNet Help

Admin. UPV

Browsing by UPV Unit "Universitat Politècnica de València. Departamento de Ingeniería Química y Nuclear - Departament d'Enginyeria Química i Nuclear"

Now showing items 1-20 of 2146

"Diseny d'una unitat de compostatge per a la Bodega Cooperativa de Castalla"

Bernabeu Santisteban, Andrés (Universitat Politècnica de València, 2019-10-22)

[CA] Amb el progrés de la humanitat en les últimes dècades hi ha hagut un increment considerable de la població mundial i açò ha dut com a conseqüència un augment de la quantitat de residus generats. Per tal de combatre ...
2nd. International conference on higher education advances (HEAD'16)

Doménech i de Soria, Josep; Vincent Vela, Maria Cinta; De la Poza, Elena; Blázquez Soriano, Mª Desamparados; Peña Ortiz, Raúl (Editorial Universitat Politècnica de València, 2016-10-27)

After the great success of the first HEAd conference, which received submissions from 41 countries,we are pleased to announce the Second International Conference on Higher Education Advances (HEAD'16).This conference is ...
3D calculation of the lambda eigenvalues and eigenmodes of the two-group neutron diffusion equation by coarse-mesh nodal methods

Muñoz-Cobo, J.L.; Miró Herrero, Rafael; Wysocki, A.; SOLER DOMINGO, AMPARO (Elsevier, 2019-01)

[EN] This paper shows the development and roots of the lambda eigenvector and eigenmodes calculation by coarse-mesh finite difference nodal methods. In addition, this paper shows an inter-comparison of the eigenvalues and ...
6 and 15 MeV photon spectra reconstruction using an unfolding depth dose gradient methodology

Juste Vidal, Belen Jeanine; Miró Herrero, Rafael; Verdú Martín, Gumersindo Jesús; Diez Domingo, Sergio; Campayo Esteban, Juan Manuel (Institute of Electrical and Electronics Engineers, 2011)

[EN] An accurate knowledge of the spectral distribution emission is essential for precise dose calculations in radiotherapy treatment planning. Reconstruction of photon spectra emitted by medical accelerators from measured ...
A block Arnoldi method for the SPN equations

Vidal-Ferràndiz, Antoni; Carreño, Amanda; Ginestar Peiro, Damián; Verdú Martín, Gumersindo Jesús (Taylor & Francis, 2020-02-01)

[EN] The simplified spherical harmonics equations are a useful approximation to the stationary neutron transport equation. The eigenvalue problem associated with them is a challenging problem from the computational point ...
A CFD-DEM solver to model bubbly flow. Part I: Model development and assessment in upward vertical pipes

Peña-Monferrer, Carlos; Monrós Andreu, Guillem; Chiva Vicent, Sergio; Martinez-Cuenca, R.; Muñoz-Cobo, J. L. (Elsevier, 2018)

[EN] In the computational modeling of two-phase flow, many uncertainties are usually faced in simulations and validations with experiments. This has traditionally made it difficult to provide a general method to predict ...
A CFD-DEM solver to model bubbly flow. Part II: Critical validation in upward vertical pipes including axial evolution

Peña-Monferrer, Carlos; Monrós-Andreu, Guillem; Chiva Vicent, Sergio; Martinez-Cuenca, R.; Muñoz-Cobo, J. L. (Elsevier, 2018)

[EN] In the computational modeling of two-phase flow, many uncertainties are usually faced in simulations and validations with experiments. This has traditionally made it difficult to provide a general method to predict ...
A comparative study of boron transport models in NRC thermal-hydraulic code TRACE

Olmo-Juan, Nicolás; Barrachina Celda, Teresa María; Miró Herrero, Rafael; Verdú Martín, Gumersindo Jesús; Pereira, C. (Sociedade Brasileira de Proteção Radiológica, 2019)

[EN] Recently, the interest in the study of various types of transients involving changes in the boron concentration inside the reactor, has led to an increase in the interest of developing and studying new models and tools ...
A comparative study of the influence of salt concentration on the performance of an osmotic membrane bioreactor and a sequencing batch reactor

Soler Cabezas, José Luis; Lujan Facundo, Maria Jose; Mendoza Roca, José Antonio; Vincent Vela, Maria Cinta; Pastor Alcañiz, Laura (John Wiley & Sons, 2018)

[EN] BACKGROUNDAn osmotic membrane bioreactor (OMBR) is a wastewater treatment technique that presents low energy requirements, low membrane fouling and high removal of nutrients and organic matter. However, reverse salt ...
A comparison study of pattern recognition algorithms implemented on a microcontroller for use in an electronic tongue for monitoring drinking waters

Garcia-Breijo, Eduardo; J.K. Atkinson; Gil Sánchez, Luís; Masot Peris, Rafael; Ibáñez Civera, Francisco Javier; Garrigues Baixauli, José; M. Glanc; Laguarda-Miro, Nicolas; Olguín Pinatti, Cristian Ariel (Elsevier, 2011)

A portable electronic tongue has been developed using an array of eighteen thick-film electrodes of different materials forming a multi-electrode array. A microcontroller is used to implement the pattern recognition. The ...
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 criterion for the transition from wall to core peak gas volume fraction distributions in bubbly flows

Méndez Díaz, Santos; Zenit, Roberto; Chiva Vicent, Sergio; Muñoz-Cobo, J.L.; Martinez-Martinez, Santiago (Elsevier, 2012)

[EN] It has been observed by many authors that for ascending bubbly flows, the gas fraction distributes radially in different manners. Depending on the flow conditions and channel characteristics, the bubbles may accumulate ...
A finite element method for neutron noise analysis in hexagonal reactors

Vidal-Ferràndiz, Antoni; Ginestar Peiro, Damián; Carreño, Amanda; Verdú Martín, Gumersindo Jesús; Demazière, C. (EDP Sciences, 2021-02-22)

[EN] The early detection of anomalies through the analysis of the neutron noise recorded by in-core and ex-core instrumentation gives the possibility to take proper actions before such problems lead to safety concerns or ...
A hybrid genetic algorithm to reduce the radiation dose in CR images

Sánchez, M. G.; Fajardo-Delgado, D.; Vidal-Gimeno, Vicente-Emilio; Verdú Martín, Gumersindo Jesús (Elsevier, 2020-02)

[EN] The quality of computed radiography (CR) images typically relate to patient radiation exposure. The lower the X-ray dose exposure, the higher the level of inherent noise in the CR images. In this work, we address the ...
A Krylov-Schur solution of the eigenvalue problem for the neutron diffusion equation discretized with the Raviart-Thomas method

Bernal-Garcia, Alvaro; Hébert, Alain; Roman, Jose E.; Miró Herrero, Rafael; Verdú Martín, Gumersindo Jesús (Taylor & Francis, 2017)

[EN] Mixed-dual formulations of the finite element method were successfully applied to the neutron diffusion equation, such as the Raviart¿Thomas method in Cartesian geometry and the Raviart¿Thomas¿Schneider in hexagonal ...
A Labview® program for illustrating the basic concepts of Bayesian inference

Giner Sanz, Juan José; García Gabaldón, Montserrat; Ortega Navarro, Emma María; Shao-Horn, Yang; Pérez Herranz, Valentín (Editorial Universitat Politècnica de València, 2019-09-30)

[EN] Despite the importance of Bayesian inference and the growth of Bayesian research, today, most undergraduate teaching is still based on frequentist statistics. A way of facilitating the introduction of students to ...
A metal ion release study of CoCrMo exposed to corrosion and tribocorrosion conditions in simulated body fluids

Espallargas, N.; Torres, C.; Igual Muñoz, Anna Neus (Elsevier, 2015)

[EN] Several studies have investigated the presence of metal ions in different human fluids (i.e. blood, urine, serum and plasma) of patients using CoCrMo bearing implants. The general conclusion is that the degradation ...
A multi-scale and multi-physics simulation methodology with the state-of-the-art tools for safety analysis in light water reactors applied to a turbine trip scenario (PART I)

Hidalga-García-Bermejo, Patricio; Abarca Giménez, Agustín; Miró Herrero, Rafael; SEKHRI, ABDELKRIM; Verdú Martín, Gumersindo Jesús (Elsevier, 2019-08-15)

[EN] The simulation of transient events is a requirement in the evaluation of the safety of Nuclear Power Plants. The Nuclear Authority request the operators to report the prediction of the evolution of the corresponding ...
A multi-scale and multi-physics simulation methodology with the state-of-the-art tools for safety analysis in Light Water Reactors applied to a Turbine Trip scenario (Part II)

Hidalga-García-Bermejo, Patricio; Abarca Giménez, Agustín; Miró Herrero, Rafael; SEKHRI, ABDELKRIM; Verdú Martín, Gumersindo Jesús (Elsevier, 2019-08-15)

[EN] The development of the computer technology, as well as the research in the different science fields governing the core behavior of a Light Water Reactor, allows implementing all the known physics and consider detailed ...
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 ...