Enviaments recents

  • Analysis and design of a drain water heat recovery storage unit based on PCM plates 

    Morales-Ruiz, S; Rigola Serrano, Joaquim; Oliet Casasayas, Carles; Oliva Llena, Asensio (2016-10-01)
    Article
    Accés restringit per política de l'editorial
    This paper is focused on the detailed analysis of a PCM plate heat storage unit with a particular configuration, looking for the maximum contact area with the fluid (water) and the minimum volume to be used in a real ...
  • Thermo-mechanical parametric analysis of packed-bed thermocline energy storage tanks 

    Ferreira González, Ignacio; Pérez Segarra, Carlos David; Lehmkuhl, Oriol; Torras, Santiago; Oliva Llena, Asensio (2016-10-01)
    Article
    Accés restringit per política de l'editorial
    A packed-bed thermocline tank represents a proved cheaper thermal energy storage for concentrated solar power plants compared with the commonly-built two-tank system. However, its implementation has been stopped mainly due ...
  • Numerical analysis of conservative unstructured discretisations for low Mach flows 

    Ventosa Molina, Jordi; Chiva Segura, Jorge; Lehmkuhl, Oriol; Muela Castro, Jordi; Pérez Segarra, Carlos David; Oliva Llena, Asensio (2016-12-01)
    Article
    Accés restringit per política de l'editorial
    Unstructured meshes allow easily representing complex geometries and to refine in regions of interest without adding control volumes in unnecessary regions. However, numerical schemes used on unstructured grids have to ...
  • Synthesis of 1,2,3-triazole functionalized hyperbranched poly(ethyleneimine) and its use as multifunctional anionic macroinitiator for diglycidyl ether of bisphenol A curing 

    Acebo Gorostiza, Cristina; Lederer, Albena; Appelhans, Dietmar; Ramis Juan, Xavier; Serra Albet, Àngels (2016-12-01)
    Article
    Accés restringit per política de l'editorial
    Hyperbranched poly(ethyleneimine) (PEI) has been modified by the addition of propargyl acrylate following a Michael addition reaction. On this polymer (PEI-yne) a copper (I)-catalyzed azide alkyne cycloaddition (CuAAC) has ...
  • Network hierarchy evolution and system vulnerability in power grids 

    Luo, Lingen; Han, Bei; Rosas Casals, Martí (2016-12-01)
    Article
    Accés obert
    The seldom addressed network hierarchy property and its relationship with vulnerability analysis for power transmission grids from a complex-systems point of view are given in this paper. We analyze and compare the evolution ...
  • Parallel load balancing strategy for Volume-of-Fluid methods on 3-D unstructured meshes 

    Jofre Cruanyes, Lluís; Borrell Pol, Ricard; Lehmkuhl Barba, Oriol; Oliva Llena, Asensio (2015-02-01)
    Article
    Accés restringit per política de l'editorial
    l Volume-of-Fluid (VOF) is one of the methods of choice to reproduce the interface motion in the simulation of multi-fluid flows. One of its main strengths is its accuracy in capturing sharp interface geometries, although ...
  • Numerical simulation of roughness effects on the flow past a circular cylinder 

    Rodríguez Pérez, Ivette María; Lehmkuhl, Oriol; Piomelli, Ugo; Chiva Segura, Jorge; Borrell, Ricard; Oliva Llena, Asensio (Institute of Physics (IOP), 2016)
    Text en actes de congrés
    Accés obert
    In the present work large eddy simulations of the flow past a rough cylinder are performed at a Reynolds number of Re = 4.2 × 105 and an equivalent sand-grain surface roughness height ks = 0.02D. In order to determine the ...
  • Design of a test bench for measuring friction force in a piston-cylinder system 

    Buj Corral, Irene; Zayas Figueras, Enrique Ernesto; Álvarez Flórez, Jesús Andrés; Gutiérrez González, Ernesto (2016)
    Text en actes de congrés
    Accés obert
    In the present work, design of a first approach of a test bench prototype for measuring friction in a piston-cylinder system is presented. The bench consists of a motor, belt and pulley transmission, crank mechanism, a ...
  • A new statistical model for subgrid dispersion in large eddy simulations of particle-laden flows 

    Muela Castro, Jordi; Lehmkuhl Barba, Oriol; Pérez Segarra, Carlos David; Oliva Llena, Asensio (Institute of Physics (IOP), 2016)
    Text en actes de congrés
    Accés obert
    Dispersed multiphase turbulent flows are present in many industrial and commercial applications like internal combustion engines, turbofans, dispersion of contaminants, steam turbines, etc. Therefore, there is a clear interest ...
  • Partitioned semi-implicit methods for simulation of biomechanical fluid-structure interaction problems 

    Naseri, Alireza; Lehmkuhl Barba, Oriol; González Acedo, Ignacio; Oliva Llena, Asensio (Institute of Physics (IOP), 2016)
    Text en actes de congrés
    Accés obert
    This paper represents numerical simulation of fluid-structure interaction (FSI) system involving an incompressible viscous fluid and a lightweight elastic structure. We follow a semi-implicit approach in which we implicitly ...

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