Browsing by Subject "OpenFOAM"

A CFD-DEM solver to model bubbly flow. Part I: Model development and assessment in upward vertical pipes

Peña-Monferrer, Carlos; Monrós Andreu, Guillem; Chiva Vicent, Sergio; Martinez-Cuenca, R.; Muñoz-Cobo, J. L. (Elsevier, 2018)

[EN] In the computational modeling of two-phase flow, many uncertainties are usually faced in simulations and validations with experiments. This has traditionally made it difficult to provide a general method to predict ...

A simulation of a subcooled nucleate boiling in a pipe with openfoam

Roda Guillem, Cristian (2015-11-23)

Proyecto confidencial (Riunet)

A study of the controlling parameters of fuel air mixture formation for ECN Spray A

Vogiatzaki, Konstantina; Crua, Cyril; Morgan, Robert; Heikal, Morgan (Editorial Universitat Politècnica de València, 2017-07-28)

[EN] Designing future ultra-high efficiency, ultra-low emission engines requires an in depth understanding of the multiscale, multi-phase phenomena taking place in the combustion chamber. The performance of the fuel ...

An Eulerian-Lagrangian open source solver for bubbly flow in vertical pipes

Peña Monferrer, Carlos; Muñoz-Cobo González, José Luís; Monrós Andreu, G.; Martinez Cuenca, R.; Chiva Vicent, Sergio (Sociedad Nuclear Española, 2014-10)

Air-water two-phase flow is present in natural and industrial processes of different nature as nuclear reactors. An accurate local prediction of the boiling flow could support safety and operation analyses of nuclear ...

Análisis numérico 3D de una rotura de presa utilizando el método VOF y el modelo de turbulencia LES

Sánchez-Cordero, E.; Boix, J.; Gómez, M.; Bladé, E. (Universitat Politècnica de València, 2018-07-30)

[EN] In this paper, three-dimensional numerical analysis of dam-break flow pattern in a laboratory-scale is reported. The simulation was performed using the open source computational fluid dynamics (CFD) solver based on ...

Caracterización de pérdidas de carga en válvulas de mariposa mediante técnicas CFD

Heras Bonilla, Noelia de las (2018-09-18)

[ES] El objeto del presente trabajo es desarrollar un modelo numérico basado en técnicas de dinámica de fluidos computacional (CFD) que permita la caracterización del coeficiente de pérdidas de carga localizadas (K) que ...

Computational fluid dynamics multiscale modelling of bubbly flow. A critical study and new developments on volume of fluid, discrete element and two-fluid methods

Peña Monferrer, Carlos (2017-11-06)

The study and modelling of two-phase flow, even the simplest ones such as the bubbly flow, remains a challenge that requires exploring the physical phenomena from different spatial and temporal resolution levels. CFD ...

Desarrollo de una metodología de análisis del microemplazamiento de parques eólicos mediante técnicas CFD

Estruch Francés, Ramón (2017-10-04)

The introduction of renewable energies remains a challenge today. Specifically, wind energy, due to the high cost of assessment techniques when a new wind farm is to be built. This is due to the material used for it (sensors, ...

Detailed simulation of air-assisted spray atomization: effect of numerical scheme at intermediate Weber number

Tretola, Giovanni; Vogiatzaki, Konstantina; Navarro-Martinez, Salvador (Editorial Universitat Politècnica de València, 2017-07-28)

[EN] Numerical simulations are often used to understand spray atomisation and estimate the size of the liquid fragments. Several techniques (Level Set, Volume of Fluid, Smooth Particle Hydrodynamics, among others) exist ...

Development of a Segregated Compressible Flow Solver for Turbomachinery Simulations

Benajes Calvo, Jesus Vicente; Galindo Lucas, José; Fajardo, P.; Navarro García, Roberto (CASRPCenter of Advanced Scientific Research and Publications, 2014)

[EN] A steady multiple reference frame segregated compressible solver and an unsteady sliding mesh one are developed using OpenFOAM® to simulate turbomachinery. For each of the two solvers, governing equations, numerical ...

Diseño de instalaciones hidráulicas experimentales con apoyo de la dinámica de fluidos computacional (CFD)

Bayón, Arnau; Vallés-Morán, F. J.; Macián Pérez, Juan Francisco; López Jiménez, Petra Amparo (International Association for Hydro-Environment Engineering and Research (IAHR), 2017)

[ES] La cuantificación de pérdidas de carga causadas por elementos singulares en instalaciones hidráulicas no puede realizarse determinísticamente, por lo que debe llevarse a cabo su ensayo en laboratorio. No obstante, ...

Effect of turbulence model and inlet boundary condition on the Diesel spray behavior simulated by an Eulerian Spray Atomization (ESA) model

Salvador Rubio, Francisco Javier; Gimeno García, Jaime; Pastor Enguídanos, José Manuel; Martí Aldaraví, Pedro (Elsevier, 2014-10)

Simulating liquid spray first and second atomization is not an easy task. Many models have been developed over the past years, but Eulerian ones have proved their better performance for the dense zone of the spray. In this ...

Estudio computacional de la influencia del levantamiento de aguja sobre el flujo interno y el fenómeno de la cavitación en toberas de inyección diésel

Martínez López, Jorge (2013-05-30)

Durante el proceso de apertura y cierre de un inyector Diesel, las características del combustible a la salida de la tobera cambian significativamente como consecuencia del movimiento de la aguja. Este hecho tiene una ...

Estudio numérico de las capacidades predictivas del modelo de turbulencia Reynolds Averaged Navier-Stokes (RANS) aplicado a convertidores catalíticos.

Sánchez Abad, Nour (2017-02-13)

[EN] Air pollution is a constantly growing concern that industry and organisations need to face nowadays. It has been demonstrated that one of the major factors that contributes to the level of the air pollution comes from ...

Estudio y mejora del funcionamiento de un decantador industrial mediante el uso de modelos CFD con OpenFOAM

AHERN, DECLAN ANTHONY (2017-08-30)

Settling Tanks (STs) are used in wastewater treatment to improve water quality by elimination of suspended solids via gravitational settling. Gravitational separation processes and the internal hydrodynamics of the STs are ...

Implementación y evaluación de un modelo euleriano de atomización y dispersión para el modelado CFD de chorros Diesel

Pandal Blanco, Adrián (2014-05-19)

[ES] Durante el periodo de docencia del Máster el investigador se ha dedicado al estudio del modelado CFD de chorros Diesel bajo las condiciones de funcionamiento que se dan en los motores Diesel de inyección directa y al ...

Implementation and Development of an Eulerian Spray Model for CFD simulations of diesel Sprays

Pandal Blanco, Adrián (2016-09-01)

[EN] The main objective of this work is the modeling of diesel sprays under engine conditions, including the atomization, transport and evaporation processes pivotal in the diesel spray formation and its development. For ...

Implementation of a combustion model based on the flamelet concept and its application to turbulent reactive sprays

Winklinger, Johannes Franz (2015-03-30)

El modelado CFD se ha convertido en una herramienta aceptada y ampliamente utilizada en el ámbito del diseño de motores de combustión interna alternativos. Los modelos de combustión avanzados ayudan a comprender los fenómenos ...

Influence of VOF technique, turbulence model and discretization scheme on the numerical simulation of the non-aerated, skimming flow in stepped spillways

Bayón Barrachina, Arnau; Toro, J.P.; Bombardelli, F.A.; Matos, J.; López Jiménez, Petra Amparo (Elsevier, 2017)

[EN] An accurate description of the hydrodynamics in the non-aerated region of the skimming flow on stepped spillways is of outmost importance, particularly in small structures at large discharges. In addition, the flow ...

Método flamelet para la simulación de llamas turbulentas difusivas con swirl.

Sánchez Riera, Sebastián (2019-09-17)

[ES] La industria aeroespacial junto a su continua búsqueda de mejoras a nivel tecnológico son las principales responsables de las innovaciones experimentadas en el sector durante las últimas décadas. En esta línea, las ...

Browsing by Subject "OpenFOAM"

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Browsing by Subject "OpenFOAM"