Symmetry-preserving discretizations applied to Large-Eddy Simulation techniques in Navier-Stokes equations
Correu electrònic de l'autorjosepplanariugmail.com
Tipus de documentTreball Final de Grau
Data2020-09-28
Condicions d'accésAccés obert
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Reconeixement-NoComercial-SenseObraDerivada 3.0 Espanya
Abstract
Direct Numerical Simulations of the incompressible Navier-Stokes equations for relatively high Reynolds numbers, as required for airfoils, are extremely expensive in terms of number of CPUs as well as processing time. Thus, small-scale modelling is a clever way to reduce this cost by introducing an extra dissipation in the form of a turbulent viscosity. In this thesis, the turbulence phenomenon is reviewed, from both theoretical and technical points of view, and applied to a turbulent Lid-Driven Cavity. In order to do so, different eddy viscosity models are applied in a Large Eddy Simulation formulation melded into a symmetrypreserving discretization that presents the optimal conditions for turbulence simulation. In fact, S3PQ model developed by CTTC is used and tested in a Lid-Driven Cavity at Re = 10000, provided its remarkable turbulent properties, in which the properties of a turbulent boundary layer are studied and compared to the theoretical approach, previously developed.
MatèriesTurbulence--Simulation methods, Navier-Stokes equations, Eddies, Turbulència -- Mètodes de simulació, Equacions de Navier-Stokes, Remolins (Mecànica de fluids)
TitulacióGRAU EN ENGINYERIA EN TECNOLOGIES AEROESPACIALS (Pla 2010)
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