Investigation of turbulence models for two dimensional mean flows and implementation in OpenFOAM
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Typ
Examensarbete för masterexamen
Master Thesis
Master Thesis
Program
Automotive engineering (MPAUT), MSc
Publicerad
2014
Författare
Lalit, Manan
Modellbyggare
Tidskriftstitel
ISSN
Volymtitel
Utgivare
Sammanfattning
With an intention of discovering the best RANS model for modeling impinging flows, linear epsilon - based models(`Chien's Low Reynolds' and -f') and non-linear( and !- based) EARSM formulations were implemented on OpenFOAM-2.2.x and validated against two dimensional, developed channel flow geometries. The project arose from the need to capture flow arising from a flame impingement on the walls of an (internal combustion) engine cylinder. The objective desired from this project is to achieve directives regarding `optimal' turbulence models, defined as those which sufficiently reproduce the flow dynamics, and are applicable over a wide variety of meshes, while not being too costly on the computational front. A rating scheme for judging the quality of turbulence models, based on the aforementioned three characteristics, is discussed as part of the conclusions from this thesis project.
Beskrivning
Ämne/nyckelord
Strömningsmekanik och akustik , Hållbar utveckling , Transport , Fluid Mechanics and Acoustics , Sustainable Development , Transport