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Dissertations / Theses on the topic 'OpenFOAM'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Pegonen, Reijo. "Investigation of Thermal Mixing Using OpenFOAM." Thesis, KTH, Fysik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-101993.

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2

Izarra, Labeaga Jon, and Omagogeascoa Nerea Herreras. "Two-Phase pipeflow simulations with OpenFoam." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for energi- og prosessteknikk, 2013. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-22680.

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The main purpose of this thesis is to develop two-phase simulations using OpenFOAM. Two different situations are studied: open and closed channel flow. Different parameters are changed in each case to obtain different results, such as the inclination of the channel and the values of the velocity inlets for each phase. When dealing with the open-channel flow different inclinations are simulated and the influence of the Froude number is analyzed. The results obtained are compared with the analytical solution obtained from the Navier-Stokes equation and also with experimental results from studies

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3

Sweeney, Brian P. "Converged stepped spillway models in OpenFOAM." Kansas State University, 2014. http://hdl.handle.net/2097/17611.

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Master of Science<br>Department of Computing and Information Sciences<br>Mitchell L. Neilsen<br>The United States Department of Agriculture (USDA) is currently researching the effectiveness of various earth dam designs and their ability to prevent erosion. This report utilizes experimental results from the USDA experimental hydraulic engineering research unit to develop computational fluid dynamics models using OpenFOAM. Several variations of smooth and stepped dam models are created and analyzed with OpenFOAM on multiple cores using Message Passing Interface. In this report, seven dam designs

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4

Sjöberg, Erika. "Implementation of Aeroacoustic Methods in OpenFOAM." Thesis, KTH, MWL Marcus Wallenberg Laboratoriet, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-198512.

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A general method is established for external low Mach-number flows where aeroacoustic analogies are used to decouple the sound generation from the sound propagation. The CFD solver OpenFOAM is used to compute the flow induced sound sources and Ffowcs-Williams and Hawkings acoustic analogy is implemented to calculate the propagation of sound. Incompressible and compressible source data is gathered for a test case and upon evaluation of the noise emission the assumption of incompressibility prove to be valid for a low Mach-number flow. Furthermore the advantage of non-reflecting boundary conditi

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5

Michta, Edouard. "Modeling of Subcooled Nucleate Boiling with OpenFOAM." Thesis, KTH, Reaktorteknologi, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-32042.

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Within the course of this master thesis project, subcooled nucleate boiling in a vertical pipe has been modeled using CFD. The modeling has been carried out within the OpenFOAM framework and a two-phase Eulerian approach has been chosen. The code can be used to predict the distribution of the local ow parameters, i.e.the void fraction, the bubble diameter, the velocity of both liquid and gas, the turbulent intensity as well as the liquid temperature. Special attention has been devoted to the phenomena which govern the void fraction distribution in the radial direction. Two di erent solvers hav

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6

Thiele, Roman. "Modeling of Direct Contact Condensation With OpenFOAM." Thesis, KTH, Reaktorteknologi, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-49825.

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Within the course of the master thesis project, two thermal phase change models for direct contact conden-sation were developed with different modeling approaches, namely interfacial heat transfer and combustionanalysis approach.After understanding the OpenFOAM framework for two phase flow solvers with phase change capabilities,a new solver, including the two developed models for phase change, was implemented under the name ofinterPhaseChangeCondenseTempFoam and analyzed in a series of 18 tests in order to determine the physicalbehavior and robustness of the developed models. The solvers use a

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7

Maldonado, Jose Miguel. "MODELLING WIND FLOW THROUGHCANOPIES SYSTEMS USING OPENFOAM." Thesis, Högskolan i Gävle, Avdelningen för bygg- energi- och miljöteknik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-15461.

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The most proper emplacements for set a wind farm are already taken or cannot be used forenvironmental causes. So in order to check the viability of the complex terrain locations whichare still available Computational Fluid Dynamics tools are used. As the commercial codes arenot flexible enough and very expensive, an open software will be used OpenFOAM.OpenFOAM needs a code for accomplish the simulation; this code is programmed in C++. Theterrain roughness, the Coriolis force and the gravity force were developed, so the next step willbe to include the effect of canopies systems in the flow simu

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8

Панкратов, И. А. "Математическое моделирование течения Пуазейля в пакете OpenFOAM". Thesis, Сумский государственный университет, 2017. http://essuir.sumdu.edu.ua/handle/123456789/65353.

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9

Pedruelo, Xabier. "Modeling wind flow over complex terrain using OpenFoam." Thesis, University of Gävle, University of Gävle, Department of Technology and Built Environment, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-5005.

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10

Mehdipour, Reza. "Simulating propeller and Propeller-Hull Interaction in OpenFOAM." Thesis, KTH, Marina system, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-159275.

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This is a master’s thesis performed at the Department of Shipping and Marine Technology research group in Hydrodynamics at Chalmers University of Technology and is written for the Center for Naval Architecture at the Royal Institute of Technology, KTH.In order to meet increased requirements on efficient ship propulsions with low noise level, it is important to consider the complete system with both the hull and the propeller in the simulation.OpenFOAM (Open Field Operation and Manipulation) provides different techniques to simulate a rotating propeller with different physical and computational

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11

Jameel, Atheel. "Numerical study of two-phase phenomena using OpenFOAM." Thesis, Cardiff University, 2017. http://orca.cf.ac.uk/107592/.

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An Open source “OpenFOAM” CFD modelling tool and multi-phase solvers are used to solve two-phase flow problems of relevance a variety of engineering applications. Validation of several benchmark two-phase model predictions is presented and discussed. For the different cases considered, the comparison showed that this CFD simulation tool is suitable for modelling multi-phase problems. Furthermore, the comparison revealed that the sclsVOFFoam (LS+VOF) solver is more accurate than interFoam (VOF) and showed better agreement with previous studies. Hence, it is concluded that OpenFOAM with the scls

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12

Harris, David Benjamin. "OpenFOAM Implementation of Microbubble Models for Ocean Applications." Thesis, Virginia Tech, 2021. http://hdl.handle.net/10919/104418.

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An investigation was carried out on the current state of the art in bubble modelling for computational fluid dynamics, and comparisons made between the different methods for both polydisperse and monodisperse multiphase flows. A multigroup method for polydisperse bubbly flows with the bubbles binned in terms of mass was selected from the various alternatives, which included other multigroup models and moment methods. The latter of these involve the integration of moments of the bubble number density function and transport of these quantities. The equations from this multigroup solver were then

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13

Laghi, Giulia. "Validazione del modello di film fluido implementato in OpenFOAM." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amslaurea.unibo.it/11768/.

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Le prestazioni dei motori a combustione interna sono fortemente influenzate dalla formazione di un film fluido, a seguito dell'impatto di uno spray con una parete. Nell'ottica di favorire la formazione della miscela e di ridurre le emissioni, lo studio approfondito di tale fenomeno deve essere supportato da un processo di simulazione assistita dal calcolatore. Pertanto, la Fluidodinamica Computazionale (Computational Fluid Dynamics, CFD) ed i modelli ad essa associati rappresentano al giorno d'oggi uno strumento vantaggioso e sempre più utilizzato. In questo ambito si colloca il presente lavo

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14

Fors, Jonathan. "Modeling and OpenFOAM simulation of streamers in transformer oil." Thesis, Linköpings universitet, Institutionen för fysik, kemi och biologi, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-80932.

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Electric breakdown in power transformers is preceded by pre-breakdown events such as streamers. The understanding of these phenomena is important in order to optimize liquid insulation systems. Earlier works have derived a model that describes streamers in transformer oil and utilized a finite element method to produce numerical solutions. This research investigates the consequences of changing the numerical method to a finite volume-based solver implemented in OpenFOAM. Using a standardized needle-sphere geometry, a number of oil and voltage combinations were simulated, and the results are fo

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Prabhudev, Pavan. "Investigation of Larminar Flow inside a Torus in OpenFOAM." Thesis, KTH, Mekanik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-260334.

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The work deals with an investigation of steady, laminar and incompressible flow inside a toroidal pipe. In particular, our aim is to investigate the effects of curvature and the Reynolds-number on the flow features. Numerical simulation are performed with the open-source CFD code OpenFOAM and the results are compared with the available data in the literature [Canton et. Al 2017, Int. J. Heat Fluid Flow]. The analysis shows that by increasing the curvature, the flow features are altered. This change in flow features becomes more important as the curvature increases. A complete description of fr

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16

Pernot, Eric. "Modélisation du changement d’état solide-liquide. Application au stockage thermique par chaleur latente Adapté aux centrales solaires thermodynamiques." Thesis, Pau, 2015. http://www.theses.fr/2015PAUU3044/document.

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L'un des principaux leviers technologiques permettant le développement industriel de process de production énergétique renouvelable et à haute efficacité, consiste en l'élaboration d'une solution innovante de stockage de l'énergie. Ce système de stockage doit permettre de lisser la période de production et ainsi de suivre au plus près les besoins des consommateurs. Parmi les solutions existantes, le stockage thermique par chaleur latente présente de nombreux avantages qui font qu'aujourd'hui il fait l'objet de plusieurs travaux de recherche et de développement. Cette technologie est basée sur

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17

MAIOLI, A. G. "CFD OpenFOAM: Implementação da Combustão Smouldering e sua Avaliação Paramétrica." Universidade Federal do Espírito Santo, 2016. http://repositorio.ufes.br/handle/10/9737.

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Made available in DSpace on 2018-08-02T00:02:54Z (GMT). No. of bitstreams: 1 tese_10439_ARTUR GUIMARÃES MAIOLI20170710-111821.pdf: 23311759 bytes, checksum: 71248c6370f30765c8368835db6d11fb (MD5) Previous issue date: 2016-09-30<br>A combustão smouldering é uma forma de combustão lenta, sem chama e que ocorre a relativamente baixas temperaturas. Ela é sustentada pelo calor liberado em reações heterogêneas decorrentes do ataque direto de oxigênio na superfície de combustíveis sólidos. Apesar das características relativamente baixas desse tipo de combustão, ela apresenta um perigo significativo

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18

Huang, Chao-Kun. "Turbulence and cavitation : applications in the NSMB and OpenFOAM solvers." Thesis, Strasbourg, 2017. http://www.theses.fr/2017STRAD035/document.

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L'objectif de ce travail de thèse concerne l'étude et la mise en œuvre de deux modèles de cavitation dans le solveur NSMB (Navier-Stokes-Multi-Blocks): les modèles HEM (Homogeneous Equilibrium Model) et une équation pour le taux de vide: le modèle à transport de taux de vide (TTV). Le phénomène de cavitation est modélisé par différentes équations d'état de mélange liquide-vapeur (EOS). Des simulations numériques sont réalisées sur des écoulements diphasiques compressibles unidimensionnels et bidimensionnels avec des conditions d'interface et comparées à des solutions de référence. De plus, la

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19

Nesti, Leonardo. "Numerical Simulations of Supersonic Flows in an Aerospike using OpenFOAM." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021.

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The main objective of this thesis is to implement a suitable open-source, density-based solver to simulate the high-speed compressible flows coming out of an aerospike rocket nozzle at different altitudes. The stability of the solver is demonstrated through an assessment of the calculated thrust and the degree of accuracy in the resolution of shocks and other critical compressibility effects. The method that will be used to design the contour has been devised by Angelino, this approach assumes a series of centred, isentropic expansion waves originating at the throat section of the aerospike no

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20

Крупа, Євгеній Сергійович, та А. В. Чернецький. "Розрахунок кінематичних параметрів потоку в гідротурбіні з використанням пакету OpenFOAM". Thesis, Національний технічний університет "Харківський політехнічний інститут", 2018. http://repository.kpi.kharkov.ua/handle/KhPI-Press/48725.

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21

Pierotti, Giacomo. "Modellizzazione multiphysics di un arco elettrico in aria in ambiente OpenFOAM." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021. http://amslaurea.unibo.it/22750/.

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Il presente elaborato ha come obbiettivo l'implementazione di un codice numerico per la simulazione dell'arco elettrico in aria. Il software utilizzato per la risoluzione del problema è il toolbox open source OpenFOAM. Il modello utilizzato tiene conto dei complessi meccanismi che governano la scarica in aria, come l'interazione magnetofluidodinamica e lo scambio termico radiativo. La prima parte del lavoro di tesi è stata incentrata sulla realizzazione di un codice Matlab, che utilizza il metodo agli elementi finiti per risolvere i problemi elettrodinamico e magnetostatico, con lo scopo di co

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22

Alsgaard, Jørgen Andreas. "Numerical investigations of Piston mode resonance in a moonpool using OpenFOAM." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for marin teknikk, 2010. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-11287.

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Moonpool dynamics is a complex phenomenon, and is part of a series of problems referred to as gap problems involving entrapped fluid in a small gap. The fluid in these gaps has an infinite number of resonance modes; a piston mode resonance in heave, and an infinite number of sloshing modes. The piston mode is often the most troublesome, and must be considered when designing a moonpool. A numerical verification is done on an experiment of a 2D section of a moonpool in shallow water. The numerical tool used will be OpenFOAM (http://www.openfoam.com/) by OpenCFD. The solver library interDyMFoam w

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23

Sjölinder, Emil. "Spray and Wall Film Modeling with Conjugate Heat Transfer in OpenFOAM." Thesis, Linköpings universitet, Mekanisk värmeteori och strömningslära, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-84487.

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This master thesis was provided by Scania AB. The objective of this thesis was to modify an application in the free Computational Fluid Dynamics software OpenFOAM to be able to handle spray and wall film modeling of a Urea Water Solution together with Conjugate Heat Transfer. The basic purpose is to widen the knowledge of the vaporization process of a Urea Water Solution in the exhaust gas after treatment system for a diesel engine by using OpenFOAM. First, urea has been modeled as a very viscous liquid at low temperature to mimic the solidication process of urea. Second, the development of th

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Ghione, Alberto. "Development and validation of a two-phase CFD model using OpenFOAM." Thesis, KTH, Fysik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-108294.

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Liu, Yuan. "Hybrid Parallel Computation of OpenFOAM Solver on Multi-Core Cluster Systems." Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-31175.

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OpenFOAM, an open source industrial Computational Fluid Dynamics (CFD) tool, which contains dozens of simulation application inside. A traditional approach to accelerate physical simulation process is to employ more powerful supercomputer. However, It is bound to expense large amount of hardware resources. In recent years, parallel and distributed computing is becoming an efficient way to solve such computational intensive application. This thesis pick up the most used compressible reacting solver named dieselFoam as the research target. Through the analysis of code structure in solver equatio

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26

Towara, Markus [Verfasser], Uwe [Akademischer Betreuer] Naumann, and Wolfgang [Akademischer Betreuer] Schröder. "Discrete adjoint optimization with OpenFOAM / Markus Towara ; Uwe Naumann, Wolfgang Schröder." Aachen : Universitätsbibliothek der RWTH Aachen, 2018. http://d-nb.info/1187346942/34.

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27

Meng, Xiangyin. "Coupling of nanofluid flow, heat transfer and nanoparticles sedimentation using OpenFOAM." Thesis, City, University of London, 2017. http://openaccess.city.ac.uk/17350/.

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Nanofluid is a suspension containing a certain quantity of nanoscaled solid particles in a conventional cooling liquid. Compared to pure liquid in micro channels, nanofluid shows notably better heat transfer performance but without erosion and clogging problems as normal two-phase suspensions. Due to such advantages, nanofluid is increasingly applied as an ideal coolant in engineering. For a better understanding of nanofluid flow and heat transfer performance, many investigations have been carried out recently in both experimental and numerical ways. In numerical investigations, computational

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28

Calzolari, Giovanni. "CFD study and method development for air intake systems using OpenFOAM." Thesis, KTH, Teknisk mekanik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-279299.

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This report is the result of a joint collaboration between the two Swedish companies AFRY and Scania AB. The need of CFD analyses for internal flow purposes are continuously increasing in companies like Scania. However the use of CFD software is limited to license costs. The objective and idea of this thesis is to esablish whether OpenFOAM, an open-source CFD software, could be a suitable alternative to the currently used CFD commercial software StarCCM+ when performing total pressure drops analysis on air intake systems. Furthermore, a second objective is to develop a standard method to analy

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Moura, Rafael Cabral de. "Simula cão de Reservat órios de Petr óleo no Ambiente OpenFOAM." Universidade Federal de Pernambuco, 2012. https://repositorio.ufpe.br/handle/123456789/11653.

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Submitted by Eduarda Figueiredo (eduarda.ffigueiredo@ufpe.br) on 2015-03-10T14:20:51Z No. of bitstreams: 2 Dissertacao_Rafael_Cabral_de_Moura.pdf: 9614096 bytes, checksum: 00e44a6b599533e527f22e1e016e3a85 (MD5) license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5)<br>Made available in DSpace on 2015-03-10T14:20:51Z (GMT). No. of bitstreams: 2 Dissertacao_Rafael_Cabral_de_Moura.pdf: 9614096 bytes, checksum: 00e44a6b599533e527f22e1e016e3a85 (MD5) license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) Previous issue date: 2012-02<br>Neste trabalho foi impl

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Giannopoulos, Evangelos. "Aerodynamic performance of a wind-turbine rotor by means of OpenFOAM." Thesis, KTH, Mekanik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-199912.

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In order for wind-farm operators to deal with challenges regarding their fleet management, it is useful for them to estimate their units’ performance for different conditions. To perform such estimations, Computational Fluid Dynamics (CFD) may be used. This project focuses on the development of a CFD model for the aerodynamic analysis of wind turbine rotors, depending on their surface roughness. The work has been carried out in collaboration with the KTH Royal Institute of Technology and the Vattenfall AB R&D department. The open-source software OpenFOAM has been used to develop the desire

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31

Dyson, Joshua. "GPU accelerated linear system solvers for OpenFOAM and their application to sprays." Thesis, Brunel University, 2018. http://bura.brunel.ac.uk/handle/2438/16005.

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This thesis presents the development of GPU accelerated solvers for use in simulation of the primary atomization phenomenon. By using the open source continuum mechanics library, OpenFOAM, as a basis along with the NVidia CUDA API linear system solvers have been developed so that the multiphase solver runs in part on GPUs. This aims to reduce the enormous computational cost associated with modelling primary atomization. The modelling of such is vital to understanding the mechanisms that make combustion efficient. Firstly, the OpenFOAM code is benchmarked to assess both its suitability for atom

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Cavallone, Margherita. "Simulazione Numerica dello Scambio Termico Accoppiato Solido-Fluido Tramite il Software OpenFOAM." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018.

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Il presente lavoro di tesi è stato sviluppato in collaborazione e con il supporto della società N.IN.E (Nuclear and INdustrial Engineering) di Lucca e si focalizza sullo studio del particolare problema di scambio termico accoppiato solido-fluido in un sistema di raffreddamento. Le simulazioni numeriche sul benchmark di riferimento sono state effettuate con il software Open Source OpenFOAM-1.7 per diverse griglie di calcolo e per diversi modelli di turbolenza. Inoltre, è stato analizzato anche l'effetto delle diverse condizioni a parete (wall function). Per ogni analisi effettuata, i risul

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Ruffino, Luca. "Simulazione e modellazione di getti multifase mediante tecniche VOF e sofware OpenFoam." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2020.

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In questa tesi si presentano diversi studi per la realizzazione di un modello dei getti bifase in ambiente libero in regime di moto turbolento. Il modello è stato realizzato tramite software OpenFOAM per i modelli di turbolenza RAS e LES che sono i più utilizzati in ambito CFD. Le simulazioni prodotte hanno lo scopo di evidenziare pregi e difetti dei modelli introdotti al variare dei numeri adimensionali di Reynolds e Weber che sono tipici parametri utilizzati nello studio della termoidraulica bifase. La ricostruzione delle interfacce è stata eseguita mediante tecniche di tipo VOF.

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Ivchenko, Alexander. "Incorporation of OpenFOAM software into Computational Fluid Dynamics process in Volvo Technology." Thesis, Högskolan i Halmstad, Sektionen för Informationsvetenskap, Data– och Elektroteknik (IDE), 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-16356.

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In this thesis work the feasibility of using open source OpenFOAM software as a solver part for Computation Fluid Dynamics in Volvo Technology is studied. Since the structure of the case in OpenFOAM is rather complex, one of the main purposes of this thesis work was also to make the process of using OpenFOAM as user-friendly as possible. The general conclusion that can be drawn from this work is that a very streamlined workflow can be, and has been, designed and created.

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GOMES, Lorenzo Alfonso Caliari de Neves. "Estudo da Transferência de Calor por Convecção Natural em Dissipadores Usando OpenFOAM." reponame:Repositório Institucional da UNIFEI, 2015. http://repositorio.unifei.edu.br:8080/xmlui/handle/123456789/252.

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Submitted by repositorio repositorio (repositorio@unifei.edu.br) on 2016-01-05T16:51:41Z No. of bitstreams: 1 dissertacao_gomes_2015.pdf: 3478704 bytes, checksum: f806b32eef763d074de8eea5294921a6 (MD5)<br>Made available in DSpace on 2016-01-05T16:51:41Z (GMT). No. of bitstreams: 1 dissertacao_gomes_2015.pdf: 3478704 bytes, checksum: f806b32eef763d074de8eea5294921a6 (MD5) Previous issue date: 2015-11<br>Dissipadores de calor são dispositivos utilizados em diversos equipamentos, principalmente eletrônicos, para que seja maximizada a transferência de calor. Devido à exigência de maior compa

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Rabhi, Achref. "Numerical Modelling of Subcooled Nucleate Boiling for Thermal Management Solutions Using OpenFOAM." Licentiate thesis, Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-53307.

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Two-phase cooling solutions employing subcooled nucleate boiling flows e.g. thermosyphons, have gained a special interest during the last few decades. This interest stems from their enhanced ability to remove extremely high heat fluxes, while keeping a uniform surface temperature. Consequently, modelling and predicting boiling flows is very important, in order to optimise the two-phase cooling operation and to increase the involved heat transfer coefficients. In this work, a subcooled boiling model is implemented in the open-source code OpenFOAM to improve and extend its existing solver react

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Isaksson, Hanna. "LES Modelling of Turbulent Flow Through an Array of Cylinders Using OpenFOAM." Thesis, Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-74174.

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The objective for this master thesis project was to perform simulations for high and low Reynolds number for a porousmedia modelled as quadratic packed cylinders. The simulations were to be performed by using the open source codeOpenFOAM and the turbulence should be modelled by the LES turbulence model in order to resolve details about theturbulence. In Hellström et al. (2009) simulations were performed for a similar setup but for the k-Omega SST turbulencemodel. In this project simulations were performed not only for LES but also with the k-Omega SST model and for the laminar description in o

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Li, Jiahui. "Verification and Validation Study of OpenFOAM on the Generic Prismatic Planing Hull Form." Thesis, Virginia Tech, 2019. http://hdl.handle.net/10919/89904.

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In this research, hydrodynamic analysis, verification and validation will be performed on Generic Prismatic Planing Hull (GPPH) using OpenFOAM v1806 solver interFoam. The numerical simulation will be compared with the experimental result, which is a new set of high-quality experimental tests performed on a large model of a high deadrise prismatic planing hull with flat of chine, tested from pre-planing to fully planing regimes. Firstly, the mesh convergence study and Verification and Validation (VandV) study are performedonthebasisoffixedattitudesimulations. Threegridsarechosenandusedtoperform

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Tsiolakis, Vasileios. "Complexity reduction in parametric flow problems via Nonintrusive Proper Generalised Decomposition in OpenFOAM." Doctoral thesis, Universitat Politècnica de Catalunya, 2020. http://hdl.handle.net/10803/668675.

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The present thesis explores the viability of the proper generalised decomposition (PGD) as a tool for parametric studies in a daily industrial environment. Starting from the equations modelling incompressible flows, the separated formulation of the equations, the development of a parametric solver, the implementation in a commercial computational fluid dynamics (CFD) software, OpenFOAM, and a numerical validation are presented. The parametrised Stokes and Oseen flows are used as an initial step to test the applicability of the PGD to flow problems. The rationale for the construc- tion of a

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Wang, Cong. "Numerical Investigation of Flow Induced Noise in a Simplified HVAC Duct with OpenFOAM." Thesis, KTH, Flygdynamik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-129426.

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Due to the growing demand for comfort, the noise generated by HVAC components should be considered by the designers. Flow induced noise is one of the major contributors to the noise in HVAC systems. By means of computational aero-acoustics(CAA), the mechanism of noise generationis able to be studiedin the design phase. This research has been conducted based on a simplified HVAC duct, aiming to validate a hybrid method in CAA. The hybrid method is an affordable and promising approach for industrial applications. CFD simulation, as the first step of the hybrid method, has been performed. Due to

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Moreira, Tiago Marchão. "Contribuição para a validação do código numérico OpenFOAM em escoamentos com superfície livre." Master's thesis, Faculdade de Ciências e Tecnologia, 2012. http://hdl.handle.net/10362/8551.

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Dissertação para obtenção do Grau de Mestre em Engenharia Mecânica<br>Pretendeu-se com este trabalho explorar o potencial do código numérico OpenFOAM, no estudo de problemas de aerodinâmica e hidrodinâmica. Na parte da aerodinâmica estudou-se o caso do escoamento bidimensional estacionário no interior de uma cavidade utilizando o simpleFoam; os erros iterativo e de convergência, foram calculados e posteriormente comparados com os resultados obtidos por outros códigos numéricos. Foi simulado o escoamento bidimensional não estacionário em torno de uma placa plana perpendicular ao escoamento, u

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Tober, Hampus, and Erik Hänninger. "Evaluation of OpenFOAM performance for RANS simulationsof flow around a NACA 4412 airfoil." Thesis, KTH, Skolan för teknikvetenskap (SCI), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-231098.

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The purpose of this study is to evaluate how well the RANS models implemented in the open-source software OpenFOAM performs when simulating flow around a NACA 4412 airfoil with a turbulent boundary layer. After assessing the different models and performing several tests, the Spalart Allmaras model was chosen to be the best candidate for this airfoil. The model was validated against several different references, including a flying-hot-wire study by Coles and Wadcock [5] for a chord based Reynolds number of 1.500.000, and a Direct Numerical Simulation (DNS) performed by Vinuesa et al. [18] at th

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Brown, Scott Andrew. "Numerical modelling of turbulence and sediment concentrations under breaking waves using OpenFOAM®." Thesis, University of Plymouth, 2017. http://hdl.handle.net/10026.1/8665.

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This thesis presents the development of a novel numerical model capable of evaluating suspended sediment dynamics under breaking waves, and is based in the open source Computational Fluid Dynamics software, OpenFOAM®. The hydrodynamics were determined by solving the incompressible, Reynolds-Averaged Navier-Stokes equations for a two-phase fluid using the Finite Volume method, along with a Volume of Fluid scheme that modelled the interface between the air and water phases. A new library of five turbulence models was developed to include weakly compressible effects through the introduction of de

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Riahi, Hamza. "Développement d’une méthode des frontières immergées pour l’analyse et le contrôle des écoulements compressibles." Thesis, Chasseneuil-du-Poitou, Ecole nationale supérieure de mécanique et d'aérotechnique, 2018. http://www.theses.fr/2018ESMA0015/document.

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Cette thèse s'inscrit dans le contexte de la simulation numérique et l'analyse des écoulements compressibles, notamment en géométrie complexe ou mobile. Dans ces situations, la mise en place d'un maillage représentant correctement lesolide sans perte de précision des méthodes de discrétisation s'avère difficile. Une alternative est de travailler en maillage cartésien quelque que soit la géométrie du domaine d'écoulement en introduisant une approche aux frontières immergées.Dans ce contexte, on propose une amélioration et extension d'une méthode formulée pour la simulation des écoulements incom

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Sbardella, Daniele. "Validazione e taratura dei modelli di cavitazione di Merkle e Kunz implementati in OpenFOAM." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amslaurea.unibo.it/10295/.

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Il presente lavoro si prefigge come scopo la validazione e successiva taratura dei modelli di cavitazione di Merkle e Kunz, basati sulla modellazione del trasferimento di massa, implementati nel software OpenFOAM. Lo studio riguarda la fluidodinamica computazionale. L'operazione di taratura e condotta dall'utente variando i parametri liberi dei vari modelli, con lo scopo di avvicinare il risultato computazionale a quello sperimentale.

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Kone, Jean-Paul. "CFD modelling and simulation of multiphase flow in a PEM fuel cell using OpenFOAM." Thesis, University of Nottingham, 2018. http://eprints.nottingham.ac.uk/51934/.

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A proton exchange membrane (PEM) fuel cell is an electrolytic cell that converts chemical energy of hydrogen reacting with oxygen into electrical energy, without producing any greenhouse gases. To meet increasingly stringent application needs, improved performance and increased efficiency are paramount. Computational fluid dynamics (CFD) is an ideal means for achieving these improvements. In this thesis, a comprehensive CFD-based numerical toolbox that can accurately simulate the major transport phenomena which take place within a PEM fuel cell is presented. The tool is developed using the Ope

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Verdério, Júnior Sílvio Aparecido [UNESP]. "Aplicação de um modelo numérico na otimização de fornos alimentícios usando o OpenFOAM®." Universidade Estadual Paulista (UNESP), 2015. http://hdl.handle.net/11449/132487.

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Made available in DSpace on 2016-01-13T13:26:48Z (GMT). No. of bitstreams: 0 Previous issue date: 2015-09-02. Added 1 bitstream(s) on 2016-01-13T13:32:06Z : No. of bitstreams: 1 000855350.pdf: 5394081 bytes, checksum: 5f4d040bbbe3297c23997fc77559961e (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>Os fornos contínuos do tipo túnel, dada a sua maior flexibilidade no aquecimento e alta produtividade, tornaram-se a melhor opção para o processamento de produtos alimentícios industrializados. O combustível utilizado nos queimadores é normalmente o gás natural, que

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Verdério, Júnior Sílvio Aparecido. "Aplicação de um modelo numérico na otimização de fornos alimentícios usando o OpenFOAM® /." Bauru, 2015. http://hdl.handle.net/11449/132487.

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Orientador: Vicente Luiz Scalon<br>Co-orientador: Alcides Padilha<br>Banca: Santiago Del Rio Oliveira<br>Banca: Pedro Miguel Rebelo Resende<br>Resumo: Os fornos contínuos do tipo túnel, dada a sua maior flexibilidade no aquecimento e alta produtividade, tornaram-se a melhor opção para o processamento de produtos alimentícios industrializados. O combustível utilizado nos queimadores é normalmente o gás natural, que apesar das incertezas e oscilações dos custos, vem ganhando espaço na indústria nacional. No presente trabalho foram desenvolvidos diversos modelos físicos tridimensionais - classifi

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Champhekar, Omkar G. "Inverse Design of Two-Dimensional Centrifugal Pump Impeller Blades using Inviscid Analysis and OpenFOAM." University of Cincinnati / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1342544389.

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Lundkvist, Jennifer. "CFD Simulation of Fluid Flow During Laser Metal Wire Deposition using OpenFOAM : 3D printing." Thesis, Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-74476.

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The focus of this work was to simulate the fluid flow within a melt pool geometry, during an additive manufacturing process, implementing the CFD software OpenFOAM version 1806. Two separate models were created and run during this work, the first using a temperature mapping from a finite element (FE) model and the second being a free-standing model with Gaussian distributed laser beam striking down on the top surface. Both models were run with the standard solver icoReactingMultiphaseInterFoam, being a multiphase solver, with phase transition possibilities. Addition of gas particles was carrie

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