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Listar por autor "Hoyas Calvo, Sergio"

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A Code for Simulating Heat Transfer in Turbulent Channel Flow

Lluesma-Rodríguez, Federico; Alcántara-Ávila, Francisco; Pérez Quiles, María Jezabel; Hoyas, S (MDPI AG, 2021-04-01)

[EN] One numerical method was designed to solve the time-dependent, three-dimensional, incompressible Navier-Stokes equations in turbulent thermal channel flows. Its originality lies in the use of several well-known methods ...
A decision framework to repair or eliminate failures in engineering systems according to their Net present value

Burgos Moreno, Luna (Universitat Politècnica de València, 2020-05-05)

[ES] Esta tesis considera el impacto de los fallos en términos del efecto que estos tienen en el valor del sistema. Se desarrolla un modelo analítico que cuantifica el valor neto actual del sistema bajo unas condiciones ...
A deep Learning approach for reconstructing 3D turbulent flows from 2D observation data

Yousif, Mustafa Z.; Yu, Linqui; Hoyas, S.; Vinuesa, Ricardo; Lim, Hee-Chang (Nature Publishing Group, 2023-02-13)

[EN] Turbulence is a complex phenomenon that has a chaotic nature with multiple spatio-temporal scales, making predictions of turbulent flows a challenging topic. Nowadays, an abundance of high-fidelity databases can be ...
A holistic framework for training business data analysts in the digital era

Abouali Sánchez, Said (Universitat Politècnica de València, 2020-04-27)

[ES] Las empresas y las organizaciones están avanzando hacia una transformación digital. En este contexto, su necesidad de Analistas de Datos de Negocios, los empleados que entienden y manejan la creciente cantidad de ...
A large-eddy simulation of diesel-like gas jets

Hoyas, S; Gil, A.; Mompó Laborda, Juan Manuel; Khuong ., Anh Dung (Inderscience, 2011)

[EN] Some aspects of the transient evolution of diesel-like gas jets by means of large-eddy simulation (LES) are discussed in this work. In order to understand the relationship between the inlet boundary condition and the ...
A moving mesh generation strategy for solving an injector internal flow problem

Margot, Xandra; Hoyas, S.; Fajardo, Pablo; Patouna, Stavroula (Elsevier, 2010)

[EN] The ability to handle complex geometries is an important part of transient calculations; therefore, the need for fully automatic mesh generation capable of dealing with such geometries is quite demanded. In this paper ...
A recent eulerian langrarian CFD methodology for modeling direct injection diesel sprays

Desantes Fernández, José Mª; Hoyas Calvo, Sergio; Gil Megías, Antonio; Khuong, Anh Dung; Ravet, Frederic (World Scientific Publishing, 2014-06)

[EN] The global objective of this work is to show the capabilities of the Eulerian Lagrangian spray atomization (ELSA) model for the simulation of Diesel sprays in cold starting con- ditions. Our main topic is to focus ...
A sparse mesh for Compact Finite Difference Fourier solvers with radius-dependent spectral resolution in circular domains

Torregrosa, A. J.; Hoyas, S; Gil, A.; García Galache, José Pedro (Elsevier, 2014-04)

This paper presents a new method for the resolution of elliptic and parabolic equations in circular domains. It can be trivially extended to cylindrical domains. The algorithm uses a mixed Fourier-Compact Finite Difference ...
A study of the mesh effect on a rocket plume simulation

Ramírez, Federico N.; Escarti-Guillem, Mara S.; García-Raffi, L. M.; Hoyas, S (Elsevier, 2022-03)

[EN] The use of reliable CFD models for the simulation of spacecraft launch is crucial due to the complexity of obtaining experimental data. The validity of the results depends on the numerical schemes used and the mesh. ...
About the transient filling procedure in a rocket engine reservoir

Marco García, Diego (Universitat Politècnica de València, 2015-05-06)

Experimental work plays a mandatory role in today's investigation. It does not only permit to visualize directly the phenomena involved in a process, but also allows to proportionate crucial data so as to validate many ...
Active aircraft fault detection, accommodation and evaluation of performance reduction

Sanchez Garcia, Maria Jose (Universitat Politècnica de València, 2015-04-02)

One of the principal issues which must be overcome for the safe integration of Unmanned Aerial Vehicles (UAVs) in both militarian and civilian airspaces is how to increase their level of reliability, [1],[2]. In order ...
Aeroacoustic Improvements during Lift-off of Launch Vehicles

Escartí Guillem, Mara Salut (Universitat Politècnica de València, 2024-06-03)

[ES] La investigación realizada como parte de este doctorado industrial en COMET Ingeniería y la Universitat Politècnica de València aborda el problema crítico de las cargas vibroacústicas durante la fase de despegue de ...
Aerodynamic issues of biplanes

Huertas López, Pedro Antonio (2021-12-20)

[EN] The main objective of this project is to study the aerodynamic interaction between the wings in a biplane configuration and the effect that parameters such as gap, stagger or decalage have on it. To make it, a ...
Aerodynamic optimization of a VTOL drone using winglets

Prieto, Marina; Escartí-Guillem, Mara S.; Hoyas, S. (Elsevier, 2023-03)

[EN] In this work, an aerodynamic optimization of a VTOL drone wing has been carried out by implementing winglets. A dual methodology has been used employing a CFD study with the open source code OpenFOAM and applying the ...
Analyse du transitoire de remplissage d'une cavité d'injection d'un moteur de fusée

Catalán Sánchez, José Miguel (Universitat Politècnica de València, 2015-06-22)

L'objectif de ce projet est l'étude du transitoire thermique dans la cavité du dôme. Pour comprendre le comportement du combustible dans le dôme, on va utiliser le banc d'essais installé au laboratoire pour simuler l'injection ...
Analysis of bifurcations in a Bénard-Marangoni problem: Gravitational effects

Hoyas Calvo, Sergio; Fajardo Peña, Pablo; Gil Megías, Antonio; Pérez Quiles, María Jezabel (Elsevier, 2014-06)

This article studies the linear stability of a thermoconvective problem in an annular domain for different Bond (capillarity or buoyancy effects) and Biot (heat transfer) numbers for two set of Prandtl numbers (viscosity ...
Analysis of the contribution of the UPV's scientific production to achieving the Sustainable Development Goals

Veliche Prutianu, Remus Marian (Universitat Politècnica de València, 2024-07-02)

[EN] Achieving the Sustainable Development Goals (SDGs) of the United Nations is the primary goal of the 2030 Agenda. Universities' scientific production plays a key role in its achievement. Nevertheless, it is not always ...
Analysis of the spectral properties of variable-density turbulent reacting shear layers

Ortiz Tarín, José Luis (Universitat Politècnica de València, 2015-05-15)

Spectral analysis of turbulent uxes and new stresses that appear in the variable-density ltered Navier- Stokes equations has been carried out following an analogous procedure to the one used in traditional turbulence ...
Análisis de Flujo en Pre-Cámara de Combustión de un Satélite

Ortega Pérez, Mario (2021-06-17)

[ES] Resumen El presente documento es una memoria del proyecto fin de carrera realizado en el seno del laboratorio LEGI (Laboratoire des Ecoulements Géophysiques et Industriels) situado en Grenoble. El proyecto ...
Análisis del fenómeno del levantamiento del balasto en trenes de alta velocidad

Zafón Huerta, Sergio (2022-05-16)

[ES] El presente Proyecto Final de Carrera aborda el estudio mediante CFD del fen omeno del levantamiento de balasto en trenes de alta velocidad. A partir de un an alisis profundo del estado actual de las t ecnicas ...