LaCàN - Laboratori de Càlcul Numèric

 

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  • A second-order face-centred finite volume method on general meshes with automatic mesh adaptation 

    Giacomini, Matteo; Sevilla, Rubén (2020-01-01)
    Article
    Open Access
    A second-order face-centred finite volume strategy on general meshes is pro-posed. The method uses a mixed formulation in which a constant approximationof the unknown is computed on the faces of the mesh. Such information ...

  • A data-driven learning method for constitutive modeling: application to vascular hyperelastic soft tissues 

    González Ibáñez, David; García González, Alberto; Chinesta Soria, Francisco; Cueto Prendes, Elias (Multidisciplinary Digital Publishing Institute (MDPI), 2020-05-01)
    Article
    Open Access
    We address the problem of machine learning of constitutive laws when large experimental deviations are present. This is particularly important in soft living tissue modeling, for instance, where large patient-dependent ...

  • Classification of granular materials via flowability-based clustering with application to bulk feeding 

    Torres Serra, Joel; Rodríguez Ferran, Antonio; Romero Morales, Enrique Edgar (2021-01-22)
    Article
    Restricted access - publisher's policy
    Feeder selection impacts the performance of bagging machinery throughout its life cycle, and yet it is usually based on qualitative assessments of flowability. We propose a data analysis methodology aimed at verifying the ...

  • A combined XFEM phase-field computational model for crack growth without remeshing 

    Muixí Ballonga, Alba; Marco Alacid, Onofre; Rodríguez Ferran, Antonio; Fernández Méndez, Sonia (Springer, 2020-10-07)
    Article
    Restricted access - publisher's policy
    This paper presents an adaptive strategy for phase-field simulations with transition to fracture. The phase-field equations are solved only in small subdomains around crack tips to determine propagation, while an XFEM ...

  • Building a certified reduced basis for coupled thermo-hydro-mechanical systems with goal-oriented error estimation 

    Larion, Ygee; Zlotnik, Sergio; Massart, Thierry J.; Díez, Pedro (Springer, 2020-09)
    Article
    Restricted access - publisher's policy
    A goal-oriented a-posteriori error estimator is developed for transient coupled thermo-hydro-mechanical (THM) parametric problems solved with a reduced basis approximation. The estimator assesses the error in some specific ...

  • A weakly compressible hybridizable discontinuous Galerkin formulation for fluid-structure interaction problems 

    Spina, Andrea la; Kronbichler, Martin; Giacomini, Matteo; Wall, Wolfgang A.; Huerta, Antonio (2020-12-01)
    Article
    Restricted access - publisher's policy
    A scheme for the solution of fluid-structure interaction (FSI) problems with weakly compressible flows is proposed in this work. A novel hybridizable discontinuous Galerkin (HDG) method is derived for the discretization ...

  • High-order maximum-entropy collocation methods 

    Greco, Francesco; Arroyo Balaguer, Marino (2020-08-01)
    Article
    Restricted access - publisher's policy
    This paper considers the approximation of partial differential equations with a point collocation framework based on high-order local maximum-entropy schemes (HOLMES). In this approach, smooth basis functions are computed ...

  • Hybridisable discontinuous Galerkin solution of geometrically parametrised Stokes flows 

    Sevilla Cárdenas, Rubén; Borchini, Luca; Giacomini, Matteo; Huerta, Antonio (2020-12-01)
    Article
    Restricted access - publisher's policy
    This paper proposes a novel computational framework for the solution of geometrically parametrised flow problems governed by the Stokes equation. The proposed method uses a high-order hybridisable discontinuous Galerkin ...

  • Statistical energy analysis model for sound pressure level prediction on refrigerators 

    Zárate, Roberto; Poblet-Puig, Jordi; Ortega, Martín; López-Parra, Marcelo (2020-06-18)
    Article
    Restricted access - publisher's policy
    A Statistical Energy Analysis (SEA) model of a 510 liter capacity refrigerator is used to calculate the Sound Pressure Level (SPL) generated in a reverberation room. This is a reliable indicator of the vibroacoustic ...

  • Acciones térmicas en puentes de vigas de hormigón 

    Mirambell Arrizabalaga, Enrique; Aguado de Cea, Antonio; Díez, Pedro (1990-01)
    Article
    Open Access
    En este artículo se presenta un estudio sobre la respuesta térmica de puentes de vigas frente a los efectos térmicos ambientales. La aplicación de una metodología general de obtención de las acciones térmicas que hay que ...

  • Simulación numérica del vertido y consolidación de residuos semi-solidos industriales y mineros 

    Rodríguez Ferran, Antonio; Huerta, Antonio (1992-09)
    Article
    Open Access
    Los residuos semi-sólidos son desechos de diversas actividades productivas con un contenido de agua muy elevado. El tratamiento más común es el vertido en grandes balsas de almacenamiento. La simulación del llenado y de ...

  • Numerical and Experimental Study of the Squeezing-to-Dripping Transition in a T-Junction 

    Arias Calderón, Santiago; Villardi de Montlaur, Adeline de (2020-05-26)
    Article
    Restricted access - publisher's policy
    In this work, we study the transition from squeezing to dripping during the formation of bubbles in a capillary T-junction in conditions relevant to microgravity. The junction is formed by two perpendicular cylinders of ...

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