Ara es mostren els items 1-20 de 39

    • A fully discrete approximation of a new two-temperature thermoelastic model 

      Baldonedo, Jacobo; Fernández García, José Ramón; Quintanilla de Latorre, Ramón (Taylor & Francis Group, 2023-07)
      Article
      Accés restringit per política de l'editorial
      In this work, we study a new thermoelastic model with two temperatures from the numerical point of view. The problem is written as a coupled linear system whose unknowns are the displacement field and the conductivity and ...
    • A problem with viscoelastic mixtures: numerical analysis and computational experiments 

      Fernández, José Ramón; Masid, Maria; Magaña Nieto, Antonio; Quintanilla de Latorre, Ramón (2021)
      Article
      Accés obert
      In this paper, we study, from the numerical point of view, a dynamic problem involving a mixture of two viscoelastic solids. The mechanical problem is written as a system of two coupled partial differential equations. Its ...
    • A strain gradient problem with a fourth-order thermal law 

      Bazarra, Noelia; Fernández García, José Ramón; Quintanilla de Latorre, Ramón (2024-08-01)
      Article
      Accés obert
      In this paper, a strain gradient thermoelastic problem is studied from the numerical point of view. The heat conduction is modeled by using the type II thermal law and the second gradient of the thermal displacement is ...
    • A type III thermoelastic problem with mixtures 

      Bazarra, Noelia; Fernández, Jose R.; Quintanilla de Latorre, Ramón (2021-06)
      Article
      Accés obert
      In this work we study a thermoelastic problem involving binary mixtures. Type III thermal theory is considered for the modeling of the heat conduction. Existence, uniqueness and continuous dependence of solutions are proved ...
    • Adjoint-based PDE-constrained optimization using HPC techniques 

      Peredo Andrade, Oscar Francisco (Universitat Politècnica de Catalunya, 2013-10-02)
      Projecte Final de Màster Oficial
      Accés obert
      This work focuses in the utilization of current HPC technologies to explore mathematical optimization algorithms in which a PDE acts as main constraint. A development framework is proposed, together with a novel application ...
    • An a priori error analysis of a type III thermoelastic problem with two porosities 

      Bazarra, Noelia; Fernández, Jose R.; Quintanilla de Latorre, Ramón; Suarez, Sofia (2023-03)
      Article
      Accés obert
      In this work, we study, from the numerical point of view, a type III thermoelastic model with double porosity. The thermomechanical problem is written as a linear system composed of hyperbolic partial differential equations ...
    • Analysis of two thermoelastic problems with the Green–Lindsay model 

      Bazarra, Noelia; Fernández García, José Ramon; Quintanilla de Latorre, Ramón (Springer, 2023-06-01)
      Article
      Accés obert
      In this paper, we analyze, from the numerical point of view, two thermo-elastic problems involving the Green–Lindsay theory. The coupling term is different for each case, involving second order or first order spatial ...
    • Analytic stability maps of unknown exoplanet companions for imaging prioritization 

      Gascón Álvarez, Carlos (Universitat Politècnica de Catalunya, 2019-07-12)
      Treball Final de Grau
      Accés obert
      Realitzat a/amb:   Cornell University
      Identifying which systems are more likely to host an imageable planet can play an important role in the construction of an optimized target list for future direct imaging missions, such as the planned technology demonstration ...
    • Assessment of tabulated chemistry models for the les of a model aero-engine combustor 

      Both, Ambrus; Mira Martínez, Daniel; Lehmkuhl Barba, Oriol (Global Power and Propulsion Society (GPPS), 2022)
      Comunicació de congrés
      Accés obert
      Tabulated chemistry methods present a compromise between computational cost and the ability to capture complex combustion physics in high-fidelity numerical simulations. The application of such models entails a number of ...
    • Boundary layer flow control using synthetic jets on the flow over a NACA 0012 airfoil 

      Duran, David; Rodríguez Pérez, Ivette María; Soria Guerrero, Manel; Lehmkuhl Barba, Oriol (2017)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Numerical simulations of the flow control using a synthetic jet are presented. The flow considered is around a NACA 0012 airfoil at Re = 5000 and the actuator is located at 6% of the chord from the leading edge. This work ...
    • CFD study of the influence of mountain and valley shapes on wind propagation 

      López Gallego, Pedro (Universitat Politècnica de Catalunya, 2019-07-11)
      Treball Final de Grau
      Accés obert
      In the following work an aerodynamic study is explained, which consists in seeing the influence of the earth’s surface on the wind propagation. Specifically in plains, uphill and downhill slopes, basic geometries ...
    • CFD study of two-phase flows in hypergravity conditions with OpenFOAM 

      Espinosa Miguel, Adrià (Universitat Politècnica de Catalunya, 2019-07-11)
      Treball Final de Grau
      Accés obert
      Avui en dia ens trobem a l’epoca m ` es important de l’espai i de l’aire, lo qual ha portat a ´ que la tecnologia s’hagi vist obligada a desenvolupar-se fins al punt de poder ser utilitzada en condicions gravitacionals que ...
    • Contributions to the simulation of salt concrete - Short- and long-term mechanical behavior description involving an advanced plasticity model approach 

      Middelhoff, Marvin (Universitat Politècnica de Catalunya, 2017-01-23)
      Projecte Final de Màster Oficial
      Accés obert
      In the former German concept, rock salt was the favorite host rock to dispose heat-generating radioactive waste. To assure the integrity of the complete repository system after closure, shafts and drifts have to be sealed. ...
    • Controlador neuronal para el seguimiento de trayectorias en un péndulo de rueda inercial 

      Puga–Guzmán, S.A.; Moreno–Valenzuela, J.; Santibáñez, V. (Universitat Politècnica de Catalunya. CIMNE, 2016)
      Article
      Accés obert
      En este trabajo de investigación, se estudia el problema de control de seguimiento de trayectorias en un péndulo de rueda inercial. Los resultados son presentados de una forma constructiva. Primero, se obtiene un controlador ...
    • Data-driven model of endogenous and exogenous electric fields modulation of cerebral cortex activity 

      Colom Hernández, Jaume (Universitat Politècnica de Catalunya, 2021-07)
      Projecte Final de Màster Oficial
      Accés restringit per acord de confidencialitat
      Realitzat a/amb:   Centre national de la recherche scientifique / Institut d'Investigacions Biomèdiques August Pi i Sunyer
      This work aims to introduce and study a mathematical model of the brain cortex, that shows the oscillation(synchronisation) behaviour of the brain via the influence of internal (endogenous) and external (exogenous)electric ...
    • Homogeneity and symmetry in DEM models of cone penetration 

      Butlanska, Joanna; Arroyo Alvarez de Toledo, Marcos; Gens Solé, Antonio (American Institute of Physics (AIP), 2009)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      A three—dimensional numerical model was implemented to PFC3D Code to simulate cone penetration test in Ticino sand in a calibration chamber. The model is calibrated using laboratory test results. The full/half/quarter ...
    • HPC geophysical electromagnetics: a synthetic VTI model with complex bathymetry 

      Castillo Reyes, Octavio; Puente Álvarez, Josep de la; Cela Espín, José M. (2022-02-10)
      Article
      Accés obert
      We introduce a new synthetic marine model for 3D controlled-source electromagnetic method (CSEM) surveys. The proposed model includes relevant features for the electromagnetic geophysical community such as large conductivity ...
    • Impacto de maremotos en la costa catalana 

      Barranco Granged, Ignacio (Universitat Politècnica de Catalunya, 2015-06-17)
      Treball Final de Grau
      Accés obert
    • Influence of axial air injection on the flame stability of a technically premixed hydrogen flame 

      Mira Martínez, Daniel; Both, Ambrus; Surapaneni, Anurag (Global Power and Propulsion Society (GPPS), 2022)
      Text en actes de congrés
      Accés obert
      This work is a numerical investigation on the stability of a hydrogen flame in a swirl-stabilized burner configuration using large-eddy simulation with tabulated chemistry. Experimental results from this combustor showed ...
    • Modeling active fault systems and seismic events by using a fiber bundle model – example case: the Northridge aftershock sequence 

      Monterrubio Velasco, Marisol; Zúñiga, F. Ramón; Carrasco Jiménez, José Carlos; Márquez Ramírez, Víctor; Puente, Josep de la (Copernicus Publications, 2019)
      Article
      Accés obert
      Earthquake aftershocks display spatiotemporal correlations arising from their self-organized critical behavior. Dynamic deterministic modeling of aftershock series is challenging to carry out due to both the physical ...