Browsing by Author "Castro González, Jesús"
Now showing items 1-20 of 91
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A 3-D volume-of-fluid advection method based on cell-vertex velocities for unstructured meshes
(Elsevier, 2014-05-01)
Article
Restricted access - publisher's policyA new geometrical Volume-of-Fluid (VOF) method for capturing interfaces on three-dimensional (3-D) Cartesian and unstructured meshes is introduced. The method reconstructs interfaces as first- and second-order piecewise ... -
A 3D symmetry-preserving simulation of a concentrated photovoltaic thermal (CPVT) solar collector
(Institute of Physics (IOP), 2024)
Conference report
Open AccessIn 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 comparative numerical analysis of 3D and 2D vertical falling films
(Springer, 2024)
Conference report
Restricted access - publisher's policyIn this work a numerical investigation into vertical falling film problems is presented, focusing on comparing the difference between 3D and 2D cases. Heat and mass transport related to the falling liquid film flow are ... -
A comprehensive simulation tool for adsorption-based solar-cooled buildings. Control strategy based on variable cycle duration
(2021-01-15)
Article
Open AccessAdsorption cooling systems (ACS) may contribute towards a sustainable way of satisfying the increasing cooling demand, as they utilize solar thermal energy and employ non-ozone-depleting substances. Apart from the intrinsic ... -
A finite-volume/level-set interface capturing method for unstructured grids: Simulations of bubbles rising through viscous liquids
(WIT Press, 2014)
Conference report
Open AccessA 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
(2014-09)
Article
Restricted access - publisher's policyThe 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 free surface model for the numerical simulation of oscillating water column systems
(International Association for Computational Mechanics (IACM), 2014)
Conference report
Restricted access - publisher's policyThe aim of this work is to propose and validate a numerical model that represents the hydrodynamic behavior of an Oscillating Water Column (OWC) device, that has been shown to be one of the most promising ways to extract ... -
A generalized computational model for the simulation of adsorption packed bed reactors – Parametric study of five reactor geometries for cooling applications
(2019-02-01)
Article
Open AccessEnvironmental concerns regarding global warming and ozone depletion urge towards sustainable solutions for satisfying the increasing cooling demand. Adsorption cooling technology could form part of the solution since it ... -
A level-set method for mass transfer in bubble swarms
(2018)
Conference lecture
Restricted access - publisher's policy -
A level-set model for thermocapillary motion of deformable fluid particles
(2016-12-01)
Article
Open AccessA 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 multiple marker level-set method for simulation of bubbly flows
(International Association for Computational Mechanics (IACM), 2014)
Conference report
Restricted access - publisher's policyA multiple marker level-set (MLS) method is introduced for Direct Numerical Simulation of bubbles and droplets, which is integrated in a finite-volume framework on collocated unstructured grids of arbitrary element type. ... -
A multivariable control strategy based on fuzzy logic interference rule for a solar-driven, direct air-cooled H2O-LiBr absorption chiller
(Elsevier, 2024-05)
Article
Open AccessThe operation of a solar-driven H2O-LiBr Absorption Chiller (AbC) is subjected to various limitations regarding its ability to satisfy efficiently the required cooling demand while avoiding certain internal conditions, ... -
A new high-performance flat plate solar collector. Numerical modelling and experimental validation
(2024-02-01)
Article
Open AccessA 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 PLIC-VOF implementation on parallel 3D unstructured meshes
(2010)
Conference lecture
Restricted access - publisher's policyThe numerical simulation of interfacial and free surface ows is a vast and interesting topic in the areas of engineering and fundamental physics, such as the study of liquid-gas interfaces, formation of droplets, bubbles ... -
A Projected Ghost Fluid Method for a mimetic approach for extreme contrast interfaces in multiphase flows
(2018)
Conference report
Restricted access - publisher's policyIn the context of a multimaterial domain, the GFM for the Laplacian operator is reformulated from an algebraic perspective, where operators are represented by matrices. From this perspective, a whole new level of analysis ... -
Algebraic implementation of a flux limiter for heterogeneous computing
(2018)
Conference report
Restricted access - publisher's policy -
An energy-preserving level set method for multiphase flows
(2020-01-01)
Article
Open AccessThe computation of multiphase flows presents a subtle energetic equilibrium between potential (i.e., surface) and kinetic energies. The use of traditional interface-capturing schemes provides no control over such a dynamic ... -
Calibration and verification of CFD-VOF models for the analysis of pressurization scenarios in LH2 tanks
(Institute of Physics (IOP), 2024)
Conference report
Open AccessDue to its high power density, the aviation sector is pushing towards its electrification by designing new propulsion systems based on cryogenic liquid hydrogen (LH2). From an engineering point of view, the efficient design ... -
Comparison of the performance of falling film and bubble absorbers for air-cooled absorption systems
(2009-07-01)
Article
Open AccessSmall capacity, air-cooled NH3–H2O absorption systems are becoming more attractive in applications where the input energy can be obtained for free (e.g., solar energy, exhaust gases of engines, etc.), due to the increasing ...
