Browsing by Subject "RANS"

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

Roda Guillem, Cristian (2015-11-23)

Proyecto confidencial (Riunet)

Advanced CFD modeling of a diesel-like spray in reacting condition

Rovira Sacie, Marc (2015-11-09)

The aim of the present project is to study the turbulent combustion pro-cess in a diesel-like spray by means of CFD modeling. In order to do so a pre-existing unsteady flamelet / progress variable (UFPV) model based on the ...

Análisis de pérdidas de carga en tubos Venturi mediante técnicas CFD

Gracia Andrés, José María (2018-09-27)

[ES] El objeto del presente trabajo es desarrollar un modelo numérico basado en técnicas de dinámica de fluidos computacional (CFD) que permita la caracterización de las pérdidas de carga inducidas por elementos singulares ...

Análisis del flujo ambiental y propuesta metodológica para simulaciones CFD aplicadas a la ventilación natural de invernaderos

Granell Ruiz, Rafael (2014-04-30)

El cultivo protegido bajo invernadero tiene altos costes energéticos derivados de la ventilación forzada. En cambio, la ventilación natural puede ser una solución barata que reduzca el consumo energético. No obstante, ...

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 ...

Caracterización experimental de un prototipo de incubadora de neonatos prematuros

Llácer González, Jorge (2019-10-01)

[ES] En la actualidad, el número de neonatos prematuros nacidos en países en vías de desarrollo es muy elevado. Esto es debido sobre todo a la falta de nutrientes de la madre durante el periodo de gestación, por lo que ...

CFD simulations of multiphase flows in pipes

QUINTERO FINOL, ANDRES (2016-02-12)

The main objective of this Master thesis is to perform computational simulations of gas-liquid two phase co-current flows in horizontal, vertical and inclined pipes, in order to obtain the known flow patterns.

Diseño y predicción del funcionamiento de inyectores Venturi en riego localizado

Manzano Juarez, Juan; De Azevedo, Benito M.; Do Bomfim, Guilherme V.; Royuela, Alvaro; Palau Estevan, Carmen Virginia; Viana, Thales V. de A. (Universidade Federal Campina Grande Brazil, 2014-12)

[EN] The design and prediction performance of four Venturi injector prototypes have been studied using Computational Fluid Dynamics (CFD) techniques. Results were compared with experimental tests carried out in the laboratory ...

Estudio CFD 3D de la dispersión de un sistema de EGR de alta presión

Miquel Silla, Álvaro (2017-09-27)

[EN] It consists of a HP EGR system where the mixing between air and EGR is done produce in such a way that the EGR distribution between cylinders isn¿t evenly distributed. Thus, CFD simulations are proposed to study this ...

Estudio de las fuerzas aerodinámicas en cuerpos sencillos para aplicaciones didácticas

Coronado Muñoz, Paula (2015-10-13)

El objetivo principal de este trabajo es ampliar los contenidos de la práctica detallada en la sección de Precedentes. Dicha práctica contiene solamente un estudio experimental limitado, ya que el rango de número de Reynolds ...

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 ...

Influence of the thermal boundary condition on the heat transfer in a rib-roughened cooling channel using LES and RANS

Torres García, José Vicente (2015-04-27)

Internal cooling systems equipped with rib-roughened cooling ducts are used at turbine blades to refrigerate the metal by forced convection. The heat exchange between the walls of the cooling duct and the uid is sometimes ...

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 ...

Introduciendo la dinámica de fluidos computacional en el análisis de flujos en medio poroso

Salcedo, Ramón; Bayón Barrachina, Arnau; Chueca, Patricia (Universitat Politècnica de València, 2017-01-31)

[EN] This paper presents an introduction about how to model a ow through a porous medium with Computatio-nal Fluid Dynamics (CFD). To this end, a case study is proposed by simulating an air current produced bythe fan of ...

Numerical analysis of air-water flows in hydraulic structures using computational fluid dynamics (CFD)

Bayón Barrachina, Arnau (2018-09-15)

The new legal regulations derived from climate change dictate that hydraulic structures must be designed to handle flood events associated with return periods up to 10,000 years. This obviously involves adapting the existing ...

Performance assessment of OpenFOAM and FLOW-3D in the numerical modeling of a low Reynolds number hydraulic jump

Bayón Barrachina, Arnau; Valero, Daniel; García Bartual, Rafael Luis; Vallés Morán, Francisco José; López Jiménez, Petra Amparo (Elsevier, 2016-06-01)

A comparative performance analysis of the CFD platforms OpenFOAM and FLOW-3D is presented, focusing on a 3D swirling turbulent flow: a steady hydraulic jump at low Reynolds number. Turbulence is treated using RANS approach ...

Browsing by Subject "RANS"

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Browsing by Subject "RANS"