Exploració per tema "Two-phase flow"
Ara es mostren els items 1-20 de 53
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A 3D numerical study of the bubble generation process into a bubble T-junction generator and its comparison with experimental data: part I
(2016)
Text en actes de congrés
Accés obertThis work presents a 3D numerical study of the bubble generation process into a bubble generator obtained with the commercial Computational Fluid Dynamics solver ANSYS Fluent v15.0.7, and its comparison with experimental ... -
A coupled volume-of-fluid/level-set method for simulation of two-phase flows in unstructured meshes
(Elsevier, 2016-01)
Article
Accés obertThis 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 level-set method for interfacial heat or mass transfer in two-phase flows
(International Centre for Numerical Methods in Engineering (CIMNE), 2018)
Comunicació de congrés
Accés restringit per política de l'editorialA 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
(Institute of Physics (IOP), 2016)
Text en actes de congrés
Accés obertA 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
(2019-08-01)
Article
Accés obertA 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 two-phase flow with variable surface tension: thermocapillary and surfactants
(Scipedia, 2022)
Text en actes de congrés
Accés obertAn 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
(2015-09-01)
Article
Accés obertA 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 theoretical and experimental study of horizontal air-water two-phase flow with a spool piece
(Universitat Politècnica de Catalunya / Politecnico di Torino, 2010)
Projecte/Treball Final de Carrera
Accés obertDesarrollo de instrumentación especializada y desarrollo de algoritmos especiales capaces de interpertar las señales de medida del flujo bifásico. Combinaciones de diferentes instrumentos (Spool Piece) serán analizados y ... -
A theoretical and experimental study of horizontal air-water. Two-phase flow with a spool piece
(Universitat Politècnica de Catalunya / Politecnico di Torino, 2010)
Projecte/Treball Final de Carrera
Accés obertThis Master Thesis has been carried out by Luis Mora Vallejo and Jacobo Zegrí Reiriz. We are both two Spanish students who are studying Engineering in the Universitat Politècnica de Catalunya (UPC) in the engineer‟s school ... -
An enriched finite element/level-set method for simulating two-phase incompressible fluid flows with surface tension
(2020-10)
Article
Accés obertA finite element method is introduced to simulate surface tension dominated flow of two immiscible fluids featuring an enriched space for capturing both strong and weak pressure discontinuities. The proposed enriched finite ... -
An HDG formulation for incompressible and immiscible two-phase porous media flow problems
(Taylor & Francis, 2019-05-27)
Article
Accés obertWe develop a high-order hybridisable discontinuous Galerkin (HDG) formulation to solve the immiscible and incompressible two-phase flow problem in a heterogeneous porous media. The HDG method is locally conservative, has ... -
Analysis of the characteristic lengths in the bubble and slug flow regimes generated in a capillary T-junction
(2016-09-20)
Article
Accés obertWe present an analysis of the geometry of the continuous and disperse phases in the bubble and slug flow regimes in air–water mixtures generated in a capillary T-junction of 1 mm internal diameter. Bubble size dispersion ... -
Analysis of two-phase flows under microgravity (spatial) conditions using OpenFOAM
(Universitat Politècnica de Catalunya, 2020-07-23)
Treball Final de Grau
Accés obertTwo-phase flows have gained importance over the last years due to their multiple and useful applications in space systems. For example, two-phase flows are used in fuel cells micro-channel networks, in the fluid management ... -
Assessment of RELAP5-3D two phase flow models for MYRRHA secondary cooling system conditions
(Universitat Politècnica de Catalunya, 2021-11-10)
Projecte Final de Màster Oficial
Accés obertIn this project, a numerical model is developed to assess the thermal-hydraulic system code RELAP5-3D correlations’ used for two-phase flow in MYRRHA secondary circuit conditions. The well-known drift-flux model is applicable ... -
Benchmark cases for a multi-component Lattice–Boltzmann method in hydrostatic conditions
(Springer, 2020-10)
Article
Accés obertHydrostatic properties of partially saturated granular materials at the pore scale are evaluated by the lattice Boltzmann method (LBM) using Palabos implementation of the multi-component multiphase Shan-Chen model. Benchmark ... -
CFD study of two-phase flows in hypergravity conditions with OpenFOAM
(Universitat Politècnica de Catalunya, 2019-07-11)
Treball Final de Grau
Accés obertAvui en dia ens trobem a l’epoca m ` es important de l’espai i de l’aire, lo qual ha portat a ´ que la tecnologia s’hagi vist obligada a desenvolupar-se fins al punt de poder ser utilitzada en condicions gravitacionals que ... -
Characterization of a 2.5 mm internal diameter T-junction and study of the effects of capillary contractions in two-phase flows
(Universitat Politècnica de Catalunya, 2012-11-15)
Treball Final de Grau
Accés restringit per decisió de l'autorThe performance of a 2.5mm bubble injector is studied and compared with previous results with thinner injectors. The behaviour of the generated two-phase flow in capillary contractions is analysed. -
Characterization of bubbly and slug flow regimes generated in a minichannel in microgravity conditions
(2009-09)
Text en actes de congrés
Accés obert -
Characterization of the performance of a minibubble generator in conditions relevant to microgravity
(2010-08-05)
Article
Accés obertWe perform a characterization of a recently reported minibubbles (bubbles with a diameter of the order of 10‐3 m) generator in microgravity related conditions. Generation of bubbles is based on the generation of a slug ... -
Comparison of Two Gas Injection Methods for Generating Bubbles in a T-Junction
(2020-05-28)
Article
Accés obertIn this work, we compare the performance of two different methods for generating bubbles in conditions relevant to microgravity. A T-junction formed by two cylindrical (1 mm of internal diameter) and perpendicular channels ...