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An extended mixture model for the simultaneous treatment of short and long scale interfaces

Santiago Márquez Damián Norberto Marcelo Nigro Patricio Bohorquez Rodríguez de Medina Mariano Ignacio Cantero Jorge D'Elia Axel Larreteguy Mario Alberto Storti

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Resumen/Descripción – provisto por el repositorio digital
The study of multi-phase models is a field of great interest in industry and academia. Multi-phase flows are present in hydraulics, petrochemical industry, oceanography, siderurgy, atomic energy and many other human activities. This field is far from being completely understood and the available tools are still in a developing stage. Nowadays the only general models for this kind of problems are the Direct Numerical Simulation or other models based in the physics of fluids. In this scenario, the aim of this thesis is to develop a new model based on the Volume of Fluid method and the Mixture Model in order to solve multi-phase flows with different interface scales and the transition among them. The interface scale is characterized by a measure of the grid, which acts as a geometrical filter and is related with the accuracy in the solution. This coupled model allows to reduce the grid requirements for a given accuracy. Having this objective in mind, a generalization of the Algebraic Slip Mixture Model is proposed to solve problems involving short and long scale interfaces in an unified framework. This model is implemented using the OpenFOAMR(R) libraries to generate a state-of-the-art solver capable to solve large problems in High Performance Computing facilities. In addition several other contributions were made regarding to the conceptualization of the Mixture Model, the development of a new Riemann-free solver used to solve mixture problems and a set of tools to help in the implementation process.
Palabras clave – provistas por el repositorio digital

Finite Volume Method; Mixture Model; Hyperbolic Systems with Restrictions; Volume of Fluid Method; OpenFOAM; Método de Voluménes Finitos; Modelo de Mezcla; Sistemas Hiperbólicos con Restricciones; Método del Volumen de Fluido; Modelos acoplados

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No requiere 2013 Biblioteca Virtual de la Universidad Nacional del Litoral (SNRD) acceso abierto

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Tipo de recurso:

tesis

Idiomas de la publicación

  • inglés

País de edición

Argentina

Fecha de publicación