Browsing by Author "Castro González, Jesús"
Now showing items 1-20 of 75
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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 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 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 ... -
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 ... -
Computational investigation of the hexagonal honeycomb adsorption reactor for cooling applications: Honeycomb adsorption reactor for cooling
(2022-02-05)
Article
Restricted access - publisher's policyAdsorption cooling is a sustainable technology, since it can utilize solar energy or waste heat, while employing substances without ozone depletion and global warming potential. The adsorption reactor design is determinant ... -
Conservative discretization of multiphase flow with high density ratios
(WIT Press, 2014)
Conference report
Open AccessThe computation of multiphase flows presenting high density ratios, where the fluids involved are considered immiscible, are of great importance for fundamental physics and industrial applications; such as the study of ... -
Control strategy approach based on the operational results of a small capacity direct air -cooled LiBr -Water absorption chiller
(International Solar Energy Society, 2017)
Conference lecture
Open AccessThe scope of this paper is to give a short overview of the state of the art regarding control strategies, identify the role of different operating conditions, and provide useful suggestions for the design and operation of ... -
Development, optimization and test performance of highly efficient flat plate solar collector with transparent insulation and low-cost overheating protection
(International Solar Energy Society, 2017)
Conference lecture
Restricted access - publisher's policyThe present work addresses a flat plate solar collector with transparent insulation material (TIM) and high temperature protection system. The design and optimization of the collector have been numerically carried out by ... -
Direct numerical simulation of the flow over a spherical bubble in a turbulent pipe flow
(International Association for Computational Mechanics (IACM), 2014)
Conference report
Restricted access - publisher's policyThis work aims at investigating, by means of a direct numerical simulation, the flow over a clean spherical bubble fixed on the axis of a turbulent pipe flow. The simulation is performed by means of a parallel unstructured ... -
DNS of falling droplets in a vertical channel
(WIT Press, 2018-02-01)
Article
Open AccessThis paper presents Direct Numerical Simulation (DNS) of the falling motion of single and multiple deformable drops in a vertical channel. A systematic study of the wall effect on the motion of single drop is performed for ...
