UPCommons està en procés de migració del dia 10 fins al 14 Juliol. L’autentificació està deshabilitada per evitar canvis durant aquesta migració.
Browsing by Author "Jofre Cruanyes, Lluís"
Now showing items 1-20 of 95
-
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 characteristic length scale for density gradients in supercritical monocomponent flows near pseudoboiling
(2020-12)
Research report
Open Access -
A coupled volume-of-fluid/level-set method for simulation of two-phase flows in unstructured meshes
(Elsevier, 2016-01)
Article
Open AccessThis 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
(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 framework for characterizing structural uncertainty in large-eddy simulation closures
(springer-Verlag, 2018)
Article
Open AccessMotivated by the sizable increase of available computing resources, large-eddy simulation of complex turbulent flow is becoming increasingly popular. The underlying filtering operation of this approach enables to represent ... -
A framework for estimating epistemic uncertainty in LES closures
(2016)
Research report
Open Access -
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 level-set aided single-phase model for the numerical simulation of free-surface flow on unstructured meshes
(Elsevier, 2016-11-25)
Article
Open AccessA new single-phase scheme for the numerical simulation of free-surface problems on 3-D unstructured meshes is presented. The flow field is obtained from the discrete solution of the incompressible Navier-Stokes equations, ... -
A low-dissipation convection scheme for the stable discretization of turbulent interfacial flow
(Elsevier, 2017-08-10)
Article
Open AccessThis paper analyzes a low-dissipation discretization for the resolution of immiscible, incompressible multiphase flow by means of interface-capturing schemes. The discretization is built on a three-dimensional, unstructured ... -
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 priori analysis for high-fidelity large-eddy simulation of wall-bounded transcritical turbulent flows
(2024-05-31)
Article
Open AccessTranscritical turbulent flows are governed by the compressible Navier–Stokes equations along with a real-gas equation of state. Their computation is strongly susceptible to numerical instabilities and requires kinetic-energy- ... -
A scalable geometric multigrid method for non-symmetric linear systems arising from elliptic equations
(2015)
Research report
Open Access -
A scalable geometric multigrid solver for nonsymmetric elliptic systems with application to variable-density flows
(2018)
Article
Open AccessA geometric multigrid algorithm is introduced for solving nonsymmetric linear systems resulting from the discretization of the variable density Navier-Stokes equations on nonuniform structured rectilinear grids and ... -
Aggregation of microplastic and biogenic particles in upper-ocean turbulence
(2022-12)
Article
Open AccessThe aggregation of microplastic and biogenic particles in upper-ocean turbulence is studied by means of direct numerical simulations and Lagrangian tracking of point particles. The range of particle properties (size and ... -
An assessment of Navier-Stokes characteristic boundary conditions for real fluids in a non-dissipative numerical framework
(2024)
Conference report
Open AccessThe abrupt variations in thermophysical properties pose significant challenges for the numerical simulation of real-fluid flows. This study evaluates Navier-Stokes characteristic boundary conditions (NSCBC) for non-ideal ... -
Artificial compressibility method for high-pressure transcritical fluids at low Mach numbers
(Elsevier, 2024-02-15)
Article
Open AccessSupercritical fluids possess unique properties that makes them relevant in various scientific and engineering applications. However, the experimental investigation of these fluids is challenging due to the high pressures ... -
Bi-fidelity approximation for uncertainty quantification and sensitivity analysis of irradiated particle-laden turbulence
(2020-02-01)
Article
Open AccessParticle-laden turbulent flows subject to radiative heating are relevant in many applications, for example concentrated solar power receivers. Efficient and accurate simulations provide valuable insights and enable ... -
Buoyant high-pressure transcritical fluid duct flows
(International Centre for Numerical Methods in Engineering (CIMNE), 2024)
Conference report
Open AccessIn this work, direct numerical simulations of a high-pressure transcritical square duct flow with distinct gravity directions in the cross-stream plane are performed. The buoyancy effects on the instantaneous and mean ...
