Browsing by Author "Rigola Serrano, Joaquim"Més informacióMés informació

Now showing items 1-20 of 177

    • 3D compressible simulation of a muffler with pseudosound prediction levels 

      Ruano Pérez, Jesús; López Mas, Joan; Lehmkuhl Barba, Oriol; Rigola Serrano, Joaquim; Pérez Segarra, Carlos David (Purdue University, 2016)
      Conference lecture
      Restricted access - publisher's policy
      The main objective of this paper is to present a numerical resolution of a suction muffler configuration by using an in-house object oriented CFD & HT code TermoFluids (Lehmkuhl et al. 2007), able to handle tridimensional ...

    • A 3D symmetry-preserving simulation of a concentrated photovoltaic thermal (CPVT) solar collector 

      Santos Serrano, Daniel; Rigola Serrano, Joaquim; Castro González, Jesús; Trias Miquel, Francesc Xavier (Institute of Physics (IOP), 2024)
      Conference report
      Open Access
      In this work, a general collocated and unconditionally stable framework on unstructured meshes for solving Conjugate Heat Transfer (CHT) problems is presented by means of preserving the underlying symmetries of the continuous ...

    • A checkerboard-free symmetry-preserving conservative method for magnetohydrodynamic flows 

      Hopman, Johannes Arend; Trias Miquel, Francesc Xavier; Rigola Serrano, Joaquim (Institute of Physics (IOP), 2024)
      Conference report
      Open Access
      Simulating MHD flows at high Hartmann numbers and low magnetic Reynolds numbers is of high interest for the design of a nuclear fusion breeding blanket, for which high accuracy and conservation of physical properties are ...

    • A complete analysis of the heat, air and moisture transfer on building performance 

      Souaihi, Oussama; Lopez, Joan; Capdevila Paramio, Roser; Rigola Serrano, Joaquim; Lehmkuhl Barba, Oriol; Oliva Llena, Asensio (2016)
      Conference report
      Restricted access - publisher's policy
      The simulation of combined heat, air and moisture (HAM) is important to predict the indoor air quality and thermal comfort. Moreover, inappropriate levels of indoor humidity and temperature can contribute to a high movement ...

    • A coupled volume-of-fluid/level-set method for simulation of two-phase flows in unstructured meshes 

      Balcázar Arciniega, Néstor; Lehmkuhl Barba, Oriol; Jofre Cruanyes, Lluís; Rigola Serrano, Joaquim; Oliva Llena, Asensio (Elsevier, 2016-01)
      Article
      Open Access
      This paper presents a methodology for simulation of two-phase flows with surface tension in the framework of unstructured meshes, which combines volume-of-fluid with level-set methods. While the volume-of-fluid transport ...

    • A finite-volume/level-set interface capturing method for unstructured grids: Simulations of bubbles rising through viscous liquids 

      Balcázar Arciniega, Néstor; Jofre Cruanyes, Lluís; Lehmkuhl Barba, Oriol; Rigola Serrano, Joaquim; Castro González, Jesús; Oliva Llena, Asensio (WIT Press, 2014)
      Conference report
      Open Access
      A numerical method is developed for simulating two-phase flows with moving inter-phase boundaries, which is integrated in a finite-volume framework on collocated unstructured grids of arbitrary element type. The location, ...

    • A finite-volume/level-set method for simulating two-phase flows on unstructured grids 

      Balcázar Arciniega, Néstor; Jofre Cruanyes, Lluís; Lehmkuhl Barba, Oriol; Castro González, Jesús; Rigola Serrano, Joaquim (2014-09)
      Article
      Restricted access - publisher's policy
      The conservative level-set method for capturing the interface between two fluids is combined with a variable density projection scheme to simulate incompressible two-phase flows on unstructured meshes. All equations are ...

    • A fluid-structure interaction solver for the fluid flow through reed type valves 

      González Acedo, Ignacio; Naseri, Alireza; Rigola Serrano, Joaquim; Pérez Segarra, Carlos David; Oliva Llena, Asensio (Institute of Physics (IOP), 2017)
      Conference lecture
      Open Access
      Suction and discharge processes with self actuated valves have a major influence in efficiency and reliability of hermetic reciprocating compressors. Understanding the operation completely in order to enhance compressor's ...

    • A General Method to Compute Numerical Dispersion Error 

      Ruano Pérez, Jesús; Baez Vidal, Aleix; Rigola Serrano, Joaquim; Trias Miquel, Francesc Xavier (2021)
      Conference report
      Open Access
      This article presents a new methodology to compute numerical dispersion error. The analysis here presented is not restricted to uniform structured meshes nor linear discrete operators as it does not rely on sinusoids to ...

    • A level-set method for interfacial heat or mass transfer in two-phase flows 

      Balcázar Arciniega, Néstor; Antepara Zambrano, Óscar; Rigola Serrano, Joaquim; Oliva Llena, Asensio (International Centre for Numerical Methods in Engineering (CIMNE), 2018)
      Conference lecture
      Restricted access - publisher's policy
      A level-set model is proposed for simulating interfacial heat or mass transfer in two-phase flows. The Navier-Stokes equations as well as the heat transfer or mass transfer equations are discretized using a finite-volume ...

    • A level-set method for thermal motion of bubbles and droplets 

      Balcázar Arciniega, Néstor; Oliva Llena, Asensio; Rigola Serrano, Joaquim (Institute of Physics (IOP), 2016)
      Conference report
      Open Access
      A conservative level-set model for direct simulation of two-phase flows with thermocapillary effects at dynamically deformable interface is presented. The Navier-Stokes equations coupled with the energy conservation equation ...

    • A level-set model for mass transfer in bubbly flows 

      Balcázar Arciniega, Néstor; Antepara Zambrano, Óscar; Rigola Serrano, Joaquim; Oliva Llena, Asensio (2019-08-01)
      Article
      Open Access
      A level-set model is presented for simulating mass transfer or heat transfer in two-phase flows. The Navier-Stokes equations and mass transfer (or heat transfer) equation are discretized using a finite volume method on a ...

    • A level-set model for thermocapillary motion of deformable fluid particles 

      Balcázar Arciniega, Néstor; Rigola Serrano, Joaquim; Castro González, Jesús; Oliva Llena, Asensio (2016-12-01)
      Article
      Open Access
      A new level-set model is proposed for simulating immiscible thermocapillary flows with variable fluid-property ratios at dynamically deformable interfaces. The Navier–Stokes equations coupled with the energy conservation ...

    • A level-set model for two-phase flow with variable surface tension: thermocapillary and surfactants 

      Balcázar Arciniega, Néstor; Rigola Serrano, Joaquim; Oliva Llena, Asensio (Scipedia, 2022)
      Conference report
      Open Access
      An unstructured conservative level-set method for two-phase flow with variable surface tension is introduced. Surface tension is a function of temperature or surfactant concentration on the interface. Consequently, the ...

    • A multiple marker level-set method for simulation of deformable fluid particles 

      Balcázar Arciniega, Néstor; Lehmkuhl Barba, Oriol; Rigola Serrano, Joaquim; Oliva Llena, Asensio (2015-09-01)
      Article
      Open Access
      A novel multiple marker level-set method is introduced for Direct Numerical Simulation of deformable fluid particles (bubbles and droplets), which is integrated in a finite-volume framework on collocated unstructured grids. ...

    • A new general method to compute dispersion errors on Cartesian stretched meshes for both linear and non-linear operators 

      Ruano Pérez, Jesús; Baez Vidal, Aleix; Rigola Serrano, Joaquim; Trias Miquel, Francesc Xavier (2022-02-01)
      Article
      Restricted access - publisher's policy
      The present article presents a new analysis for the dispersion error and the methodology to evaluate it numerically. Here we present the spectral properties of several convective schemes, including non-linear ones, on ...

    • A new high-performance flat plate solar collector. Numerical modelling and experimental validation 

      Zheng, Jian; Febrer Cordoba, Rafael; Castro González, Jesús; Kizildag, Deniz; Rigola Serrano, Joaquim (2024-02-01)
      Article
      Open Access
      A new concept of flat plate solar collector (FPC) has been numerically studied for optimization purposes from an energetic and exergetic points of view. The highly efficient results have been achieved by adding transparent ...

    • A new thermocline-PCM thermal storage concept for CSP plants. Numerical analysis and perspectives 

      Galione Klot, Pedro Andrés; Pérez Segarra, Carlos David; Rodríguez Pérez, Ivette María; Lehmkuhl Barba, Oriol; Rigola Serrano, Joaquim (2013)
      Conference report
      Open Access
      Thermocline storage concept has been considered for more than a decade as a possible solution to reduce the huge cost of the storage system in CSP plants. However, one of the drawbacks of this concept is the decrease in ...

    • A numerical approach for non-Newtonian two-phase flows using a conservative level-set method 

      Amani, Ahmad; Balcázar Arciniega, Néstor; Naseri, Alireza; Rigola Serrano, Joaquim (2020-04-01)
      Article
      Open Access
      A finite-volume based conservative level-set method is presented to numerically solve the non-Newtonian multiphase flow problems. One set of governing equations is written for the whole domain, and different phases are ...

    • A numerical set-up for the simulation of infection probability from SARS- CoV-2 in public transport vehicles 

      Schillaci, Eugenio; Vera i Fernández, Jordi; Morozova, Nina; Rigola Serrano, Joaquim (Scipedia, 2022)
      Conference report
      Open Access
      In this work, a numerical framework aimed at simulating the transport of contaminants and infectious agents within a closed domain is presented. The method employs mature CFD algorithms to calculate air fields with reasonable ...