Exploració per autor "Cajas García, Juan Carlos"

Ara es mostren els items 1-18 de 18

    • A parallel coupled algorithm for the solution of deformable two-body contact problem 

      Rivero Almeida, José Miguel; Cajas García, Juan Carlos; Houzeaux, Guillaume; Vázquez, Mariano (Barcelona Supercomputing Center, 2015-05-05)
      Text en actes de congrés
      Accés obert
      This work presents a parallel iterative method for numerical solving frictionless contact problem for two elastic bodies. Each iterative step consists of a Dirichlet problem for the one body and a Neumann problem for ...

    • Aspect ratio influence on the vortex induced vibrations of a pivoted finite height cylinder at low Reynolds number 

      Cajas García, Juan Carlos; Rodríguez Pérez, Ivette María; Salcedo Álvarez, Erick; Lehmkuhl Barba, Oriol; Houzeaux, Guillaume; Treviño Treviño, César (2023-08-10)
      Article
      Accés obert
      The effect of the aspect ratio on the vortex induced vibrations (VIV) of a pivoted finite length circular cylinder is investigated. A fixed value of the Reynolds number Re = 100 with four values of the aspect ratio ...

    • Extension of the parallel Sparse Matrix Vector Product (SpMV) for the implicit coupling of PDEs on non-matching meshes 

      Houzeaux, Guillaume; Borrell, Ricard; Cajas García, Juan Carlos; Vázquez, Mariano (Elsevier, 2018-09-15)
      Article
      Accés obert
      The Sparse Matrix Vector Product (SpMV) is one of the main operations of iterative solvers, and, in a parallel context, it is also the siege of point-to-point communications between the neighboring MPI processes. The ...

    • Flow topology and heat transfer analysis of slotted and axisymmetric synthetic impinging jets 

      Miró Jané, Arnau; Soria Guerrero, Manel; Cajas García, Juan Carlos; Rodríguez Pérez, Ivette María; Moulinec, Charles (2021-06)
      Article
      Accés obert
      This work is focused on exploring the flow and heat transfer capabilities for slotted and axisymmetric cavity configurations for synthetic impinging jets; the jet is enclosed between two isothermal parallel plates, impinging ...

    • Fluid-structure interaction based on HPC multicode coupling 

      Cajas García, Juan Carlos; Houzeaux, Guillaume; Vázquez, Mariano; Garcia Gasulla, Marta; Casoni Rero, Eva; Calmet, Hadrien; Artigues, Antoni; Borrell Pol, Ricard; Lehmkuhl Barba, Oriol; Pastrana Maldonado, Daniel; Yáñez, David; Pons, Ramon; Martorell Lopez, Jordi (2018)
      Article
      Accés restringit per política de l'editorial
      The fluid-structure interaction (FSI) problem has received great attention in the last few years, mainly because it is present in many physical systems, industrial applications, and almost every biological system. In the ...

    • Heat Transfer Effects on a Fully Premixed Methane Impinging Flame 

      Mira Martínez, Daniel; Zavala, Miguel; Avila, Matías; Owen, Herbert; Cajas García, Juan Carlos; Vázquez, Mariano; Houzeaux, Guillaume (Springer, 2016-01-09)
      Article
      Accés obert
      A numerical assessment of different thermal conditions for an impinging flame configuration is investigated using large-eddy simulation. The cases of study correspond to a turbulent methane flame at equivalence ratio ER = ...

    • Large-eddy simulations of the vortex-induced vibration of a low mass ratio two-degree-of-freedom circular cylinder at subcritical Reynolds numbers 

      Pastrana Maldonado, Daniel; Cajas García, Juan Carlos; Lehmkuhl Barba, Oriol; Rodríguez Pérez, Ivette María; Houzeaux, Guillaume (Elsevier, 2018-09)
      Article
      Accés obert
      The vortex induced vibration phenomenon of a low mass ratio () two-degree-of-freedom circular cylinder at subcritical Reynolds numbers ( 5300, 11,000) has been investigated by means of large-eddy simulations. A low-dissipative ...

    • Numerical methods 

      Agelet de Saracibar Bosch, Carlos; Boman, Romain; Bussetta, Philippe; Cajas García, Juan Carlos; Cervera Ruiz, Miguel; Chiumenti, Michele; Coll Sans, Abel; Dadvand, Pooyan; Hernández Ortega, Joaquín Alberto; Houzeaux, Guillaume; Pasenau de Riera, Miguel; Ponthot, Jean Philippe (Wiley, 2016)
      Capítol de llibre
      Accés restringit per política de l'editorial
      As one of the results of an ambitious project, this handbook provides a well-structured directory of globally available software tools in the area of Integrated Computational Materials Engineering (ICME). The compilation ...

    • Numerical study of heat transfer from a synthetic impinging jet with a detailed model of the actuator membrane 

      Miró, Arnau; Soria Guerrero, Manel; Cajas García, Juan Carlos; Rodríguez Pérez, Ivette María (2019-02-02)
      Article
      Accés obert
      Synthetic jets are produced by the oscillatory movement of a membrane inside a cavity, causing the fluid to enter and leave through a small orifice. The present study is focused on investigating the cooling capabilities ...

    • On the formation of Taylor-Görtler structures in the vortex induced vibration phenomenon 

      Pastrana Maldonado, Daniel; Rodríguez Pérez, Ivette María; Cajas García, Juan Carlos; Lehmkuhl Barba, Oriol; Houzeaux, Guillaume (2020-06-01)
      Article
      Accés obert
      In this work, the three-dimensional structure of the boundary layer in the context of the vortex induced vibration of a circular cylinder is presented and investigated for the first time. Large-eddy simulations of a low ...

    • On the role of a centrifugal instability in the vortex-induced vibration of a two-degrees of freedom circular cylinder at moderate Reynolds numbers 

      Pastrana, Daniel; Cajas García, Juan Carlos; Lehmkuhl Barba, Oriol; Rodríguez Pérez, Ivette María; Vázquez, Mariano; Houzeaux, Guillaume (2018)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      In this work, the formation and role of a centrifugal instability in the VIV phenomenon at moderate Reynolds numbers are investigated for the ¿rst time. Large eddy simulations of a low mass ratio (m = 2.6) two-degree-of-freedom ...

    • On the wake dynamics of an oscillating cylinder via proper orthogonal decomposition 

      Eiximeno Franch, Benet; Miró Jané, Arnau; Cajas García, Juan Carlos; Lehmkuhl Barba, Oriol; Rodríguez Pérez, Ivette María (Multidisciplinary Digital Publishing Institute (MDPI), 2022-09-02)
      Article
      Accés obert
      The coherent structures and wake dynamics of a two-degree-of-freedom vibrating cylinder with a low mass ratio at Re=5300 are investigated by means of proper orthogonal decomposition (POD) of a numerical database generated ...

    • Parallel Implementation of Domain Composition Methods 

      Houzeaux, Guillaume; Cajas García, Juan Carlos; Eguzkitza, Beatriz; Vázquez, Mariano (Saxe-Coburg Publications, 2015-04)
      Capítol de llibre
      Accés obert
      Domain composition methods (DCM) consist of obtaining a solution to a problem on a domain, from the formulations of the same problem expressed on various subdomains. These methods have therefore the oppostive objective to ...

    • Parallel mesh partitioning based on space filling curves 

      Borrell, Ricard; Cajas García, Juan Carlos; Mira Martínez, Daniel; Taha, A.; Koric, S.; Vázquez, Mariano; Houzeaux, Guillaume (Elsevier, 2018-09)
      Article
      Accés obert
      Larger supercomputers allow the simulation of more complex phenomena with increased accuracy. Eventually this requires finer and thus also larger geometric discretizations. In this context, and extrapolating to the Exascale ...

    • SHAPE Project Vortex Bladeless: Parallel multi-code coupling for Fluid-Structure Interaction in Wind Energy Generation 

      Cajas García, Juan Carlos; Houzeaux, Guillaume; Yáñez, David J.; Mier-Torrecilla, Mónica (2016)
      Report de recerca
      Accés obert
      Vortex-Bladeless is a Spanish SME whose objective is to develop a new concept of wind turbine without blades called Vortex or vorticity wind turbine. This design represents a new paradigm in wind energy and aims to eliminate ...

    • Vortex Induced Vibration (VIV) of circular cylinders at high Reynolds numbers 

      Pastrana Maldonado, Daniel; Cajas García, Juan Carlos; Lehmkuhl Barba, Oriol; Rodriguez, I.; Houzeaux, Guillaume (Barcelona Supercomputing Center, 2017-05-04)
      Text en actes de congrés
      Accés obert
      In this contribution, preliminary results on the study of the VIV at high Reynolds numbers are presented. First, a validation of the code and the turbulent LES WALE formulation in conjunction with a low-dissipative ...

    • Vortex induced vibrations of a pivoted finite height cylinder at low Reynolds number 

      Cajas García, Juan Carlos; Pastrana Maldonado, Daniel; Rodríguez Pérez, Ivette María; Lehmkuhl Barba, Oriol; Houzeaux, Guillaume; Vázquez, Mariano; Treviño Treviño, Cesar (2021-06-03)
      Article
      Accés obert
      The vortex induced vibrations (VIVs) of a pivoted cylinder with finite height have been numerically investigated. A mathematical model is introduced and described, and the resulting equations are numerically solved for low ...

    • Wakes and instabilities of static and freely vibrating cylinders 

      Rodríguez Pérez, Ivette María; Lehmkuhl Barba, Oriol; Pastrana Maldonado, Daniel; Cajas García, Juan Carlos; Houzeaux, Guillaume (Springer, 2019)
      Text en actes de congrés
      Accés obert
      The flow around static and freely vibrating cylinders are of interest in understanding different phenomena encountered in many practical applications.