Browsing by Subject "CFD"

A Code for Simulating Heat Transfer in Turbulent Channel Flow

Lluesma-Rodríguez, Federico; Alcántara-Ávila, Francisco; Pérez Quiles, María Jezabel; Hoyas, S (MDPI AG, 2021-04-01)

[EN] One numerical method was designed to solve the time-dependent, three-dimensional, incompressible Navier-Stokes equations in turbulent thermal channel flows. Its originality lies in the use of several well-known methods ...

A combined 1D3D CFD approach for reducing mesh dependency in Diesel spray calculations

García-Oliver, José M; Margot , Xandra; Chávez Cobo, Mariany de Jesús; Karlsson, A (PERGAMON-ELSEVIER SCIENCE LTD, 2011)

[EN] A 1D3D-CFD coupled spray model is proposed in this work for the simulation of Diesel sprays under non-evaporative conditions and constant injection velocity in time. The basic idea of the model is to reduce the poor ...

A comparison of diesel sprays CFD modeling approaches: DDM versus Sigma-Y Eulerian atomization model

Desantes Fernández, José Mª; García Oliver, José María; Pastor Enguídanos, José Manuel; Pandal-Blanco, Adrián (Begell House, 2016)

[EN] A comparison between the Σ-Y atomization model and a classical DDM approach has been carried out for diesel spray CFD simulations. The Σ-Y model, originally proposed by Vallet and Borghi (1999), is based on an Eulerian ...

A computational analysis of local flow for reacting Diesel sprays by means of an Eulerian CFD model

Pandal-Blanco, Adrián; García-Oliver, José M; Novella Rosa, Ricardo; Pastor Enguídanos, José Manuel (Elsevier, 2018)

[EN] An implementation and validation of the coupled Sigma-gamma ADF model is presented in this work for reacting Diesel spray CFD simulations under a RANS turbulence modeling approach. An Approximated Diffusion Flamelet ...

A computational fluid dynamics analysis of vorticity redution for turbocharged internal combustion engines

Wilczynski, Daniel (Universitat Politècnica de València, 2017-09-26)

El trabajo consiste en la utilización de la mecánica de fluidos computacional (CFD) para el análisis, diseño y optimización de sistemas de atenuación de la vorticidad (swirl) para su instalación en instalaciones de ensayo ...

A consistent, scalable model for Eulerian spray modeling

Pandal-Blanco, Adrián; Pastor Enguídanos, José Manuel; García Oliver, José María; Baldwin, E.; Schmidt, D.P. (Elsevier, 2016-07)

Despite great practical interest in how sprays emanate from fuel injectors, the near-nozzle region has remained a challenge for spray modelers. Recently, Eulerian models have shown promise in capturing the fast gas-liquid ...

A numerical framework for airfoil gust response and active pitch control

Grau Lozano, Ernest (Universitat Politècnica de València, 2022-10-04)

[ES] El objetivo de este trabajo es crear un marco numérico para estudiar, por medio de simulaciones URANS, la dinámica de un vehículo aéreo no tripulado sometido a ráfagas de viento y aplicar leyes de control para estabilizar ...

A recent eulerian langrarian CFD methodology for modeling direct injection diesel sprays

Desantes Fernández, José Mª; Hoyas Calvo, Sergio; Gil Megías, Antonio; Khuong, Anh Dung; Ravet, Frederic (World Scientific Publishing, 2014-06)

[EN] The global objective of this work is to show the capabilities of the Eulerian Lagrangian spray atomization (ELSA) model for the simulation of Diesel sprays in cold starting con- ditions. Our main topic is to focus ...

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

Roda Guillem, Cristian (Universitat Politècnica de València, 2015-11-23)

Proyecto confidencial (Riunet)

Acoplamiento de las características del flujo interno turbulento de una tobera a cálculos de la atomización primaria en chorro diesel mediante DNS

Crialesi Esposito, Marco (Universitat Politècnica de València, 2017-08-29)

The understanding of the combustion process in energy generation, both for stationary purpose or for propulsion, is becoming more and more demanding as the technology progress toward a cleaner combustion able to reduce the ...

Adaptación del túnel de viento del edificio 8P de la UPV para caracterizar hélices: estudio numérico

Blázquez Legidos, Carlos (Universitat Politècnica de València, 2021-09-09)

[ES] Debido al crecimiento del mercado de las pequeñas aeronaves no tripuladas, el interés en la caracterización experimental de estas y de sus componentes no hace más que aumentar. En concreto, las curvas de actuaciones ...

Aeroacoustic Analysis of Mixing Noise Generated by Turbofan Engines

Jaén Ruiz, José Carlos (Universitat Politècnica de València, 2020-05-05)

[ES] El principal objetivo de este Trabajo Final de Grado es realizar un estudio aero-acústico de dos tipologías diferentes de motores turbofan. El modelo acústico elegido para este trabajo es el llamado Stochastic Noise ...

Aerodynamic interaction in a three-rotor "tandem" configuration

González Pérez, Jaime Joaquín (Universitat Politècnica de València, 2022-11-14)

[ES] El objetivo de este estudio es caracterizar y cuantificar de forma experimental el efecto de la interacción aerodinámica entre rotores "tándem" (ejes de rotación no coincidentes), especialmente en la potencia total ...

Aerodynamic investigations on temperature distribution around buildings using CFD

Peinado Montoya, Eva (Universitat Politècnica de València, 2020-07-31)

[EN] The objective of this thesis is to analyse the heat transfer through a building that is exposed to a stream velocity, with a finite element method software which will be ANSYS Fluent. The building will be changed in ...

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 ...

Analysis of blade vortex interaction using CFD methods

Cantó Sánchez, Mauro (Universitat Politècnica de València, 2020-03-31)

[ES] Este proyecto se centrará en la simulación del flujo a través de un rotor analizando el comportamiento de dicho flujo y de la interacción vórtice pala para entender la naturaleza de dichos flujos y las causas por las ...

Analysis of different acoustic models applied to a UAV propeller

Gómez-Fabra Frasquet, Santiago (Universitat Politècnica de València, 2021-07-23)

[ES] Se pretende comparar y analizar diferentes modelos acústicos aplicados sobre la hélice de un UAV mediante el uso del software ANSYS, como los de Ffowcs Williams-Hawkings o el método directo. Estos modelos serán a su ...

Analysis of primary atomization in sprays using Direct Numerical Simulation

Crialesi Esposito, Marco (Universitat Politècnica de València, 2019-12-21)

[ES] La comprensión de los fenómenos físicos que acontecen en la región densa (también conocida como campo cercano) durante la atomización de los sprays ha sido una de las mayores incógnitas a la hora de estudiar sus ...

Analysis of Sub-Atmospheric Pressures during Emptying of an Irregular Pipeline without an Air Valve Using a 2D CFD Model

Hurtado-Misal, Aris D.; Hernández-Sanjuan, Daniela; Coronado-Hernández, Oscar E.; Espinoza-Román, Héctor; Fuertes-Miquel, Vicente S. (MDPI AG, 2021-09)

[EN] Studying sub-atmospheric pressure patterns in emptying pipeline systems is crucial because these processes could cause collapses depending on the installation conditions (the underground pipe covering height, type, ...

Analysis of the Flow in a Typified USBR II Stilling Basin through a Numerical and Physical Modeling Approach

Macián Pérez, Juan Francisco; García-Bartual, Rafael; Huber, Boris; Bayón, Arnau; Vallés-Morán, F. J. (MDPI AG, 2020-01)

[EN] Adaptation of stilling basins to higher discharges than those considered for their design implies deep knowledge of the flow developed in these structures. To this end, the hydraulic jump occurring in a typified United ...

Browsing by Subject "CFD"

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Browsing by Subject "CFD"